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Transformer is one of oldest innovations in Electrical Engineering. A Transformer is an electrical device that can be used to transfer the power from one circuit and another circuit without physical contact and without changing its characteristics like frequency, phase. It is an essential device in every electrical network circuitry. It consists majorly two circuits, namely primary circuit and one or more secondary circuit.

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NURARISSYA IMAN BINTI ROHAIMI

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What is Transformer Instrument and the application in real life

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Mohamad Muzaini (64861)

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Alis suzana(65380)

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To assess the quality of electricity supply through the power networks it is necessary to use instrument transformers or other devices for measuring voltages and currents of considerable values. In many terminals the quality of electric energy is significantly deteriorated and this result in the occurrence of the conducted disturbances in the primary signal of the instrument transformer which cause deterioration of its metrological characteristics. The main indicators to determine the level of periodic waveforms distortion are RMS and average values, total harmonic distortion (THD), crest and shape factors. Laboratory tests consisted of determining these parameters in the system with and without instrument transformers for pre-defined and repeatable distorted waveforms of instrument transformers primary windings supply voltage. The tests were performed for voltage (1000V / 100V) and current (5A / 5A) transformers. On the basis of comparison between values of designated parameters used in estimation of the power quality, obtained for measurements of the same distorted waveforms, in measuring circuits with and without instrument transformers additional errors caused by their operation is determine. It was found that higher harmonic from disturbance signal in the primary circuits of both voltage and current transformers causes increase of errors during the transfer of the signal basic harmonic (50 Hz). Furthermore, in the case of disturbance signals which frequencies are higher than 50 Hz the decrease in transfer ratio and increase of the higher harmonic phase displacement after transfer by the instrument transformer is noticeable. It must therefore be concluded that during the transfer of distorted signals through the instrument transformers their errors are increased in relation to the value defined for sinusoidal signals which frequency is 50 Hz. This leads to additional error in determining the parameters of voltages and currents used to define the power quality.
(CHRISTINA DAYANG JAU
65678

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What is Transformer Instrument and the application in real life?

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What is Transformer Instrument and the application in real life?

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Hilda Radan (66127)

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What is Transformer Instrument and the application in real life?    HO CHEN XI(66131)

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What is Transformer Instrument and the application in real life?    HO CHEN XI(66131)

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Instrument transformers are high accuracy class electrical devices used to isolate or transfofrom high voltage or high current circuits, safely isolating secondary control circuitry from the high voltages or currents. Current transformers (CT) are a series connected type of instrument transformer. They are designed to present negligible load to the supply being measured and have an accurate current ratio and phase relationship to enable accurate secondary connected metering.Current transformers are often constructed by passing a single primary turn (either an insulated cable or an uninsulated bus bar) through a well-insulated toroidal core wrapped with many turns of wire. This affords easy implementation on high voltage bushings of grid transformers and other devices by installing the secondary turn core inside high-voltage bushing insulators and using the pass-through conductor as a single turn primary.

Instrument transformers are ideally suited in the following applications:

• Indoor

• Switchgear assemblies

• Motor controllers

• Over power transformer bushings

• Over circuit breaker bushings

• Metering

• Relaying

• Current sensing

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What is Transformer Instrument and the application in real life? Jamirin Shaet (66221

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What is Transformer Instrument and the application in real life? Jamirin Shaet (66221

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Transformer is a special device to lower or increase the voltage of a power system. Transformers are usually used to operate instruments or metering from high voltage or high current circuits, safely isolating secondary control circuitry from the high voltages or currents.
Applications of transformers include  the transformer used in voltmeter, ammeters, protective relay,for step up low voltage in case of measurement and for step down high voltage for safety.

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What is Analog and Digital Instrument and its application in real life? - Google Search

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Learn some examples of analog and digital devices, and how we convert between the two... ... Information in the natural world is transferred using waves. ... aerial antenna, basic telephones, and most musical instruments were all analog. ... that are analog - that are physical and real - and converting them into digital signals ...

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What is Transformer Instrument and the application in real life ?

Transformer is a device which help in measurement of high voltage or current. It provide low range current and voltage to the protection system. High current can be measured by using low range ammeter and high voltage can be measured by using low range voltmeter.

Type of transformers :
1. Current Transformer (CT)
2. Voltage Transformer (VT) or also know as Potential Transformer (PT)

Application of transformer in real life :
1. It can rise or lower the level of level of Voltage or Current in an AC Circuit.
2. It can increase or decrease the value of capacitor, an inductor or resistance in an AC circuit.
3. It can be used to prevent DC from passing from one circuit to the other.
4. It can isolate two circuits electrically.
5. It step up the level of voltage at generation side before transmission and distribution. In distribution side, for commercial or domestic use of electricity, transformer step down the level of voltage for example form 11kV to 220 V single phase and 440 V three phase. The Current Transformer and Potential Transformer also used power system and in the industry.

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What is transformer instrument and the application in real life?(karunagaren a/l manogaran,66339)

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What is transformer instrument and the application in real life?(karunagaren a/l manogaran,66339)

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nstrument transformers is a special transformer that are used in electrical power system for stepping down currents and voltages of the system for measuring and protection purpose.

Instrument transformer are two types:
-Current Transformer (CT)
-Potential Transformer (PT)
1.Current Transformer
-A current transformer (CT) is a type of transformer that is used to measure alternating  current(AC). It produces a current in its secondary which is proportional to the current in its primary.The instrument transformers isolate measurement or protection circuits from the high voltage of the primary system.
Application:For a variety of applications, using current transformers is an efficient way to sense current with minimum insertion loss. Current transformers can perform circuit control, measure current for power measurement and control, and perform roles for safety protection and current limiting.
2.Potential Transformer
-Voltage transformers (VT), also called potential transformers (PT), are a parallel connected type of instrument transformer. They are designed to present negligible load to the supply being measured and have an accurate voltage ratio and phase relationship to enable accurate secondary connected metering.

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What is Transformer Instrument and the application in real life? HO CHEN XI(66131)
What is Transformer Instrument and the application in real life?    HO CHEN XI(66131)
Instrument transformers are high accuracy class electrical devices used to isolate or transfofrom high voltage or high current circuits, safely isolating secondary control circuitry from the high voltages or currents. Current transformers (CT) are a series connected type of instrument transformer. They are designed to present negligible load to the supply being measured and have an accurate current ratio and phase relationship to enable accurate secondary connected metering.Current transformers are often constructed by passing a single primary turn (either an insulated cable or an uninsulated bus bar) through a well-insulated toroidal core wrapped with many turns of wire. This affords easy implementation on high voltage bushings of grid transformers and other devices by installing the secondary turn core inside high-voltage bushing insulators and using the pass-through conductor as a single turn primary.

Instrument transformers are ideally suited in the following applications:

• Indoor

• Switchgear assemblies

• Motor controllers

• Over power transformer bushings

• Over circuit breaker bushings

• Metering

• Relaying

• Current sensing 
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isolation transformer
 isolation transformer
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Allexis Lester 6538
Allexis Lester 6538
Instrument transformer are class electrical devices that have high accuracy used to isolate or transform voltage or current levels. It commonly used to operate instruments or metering from high voltage or high current circuits, safely isolating secondary control circuitry from the high voltages or currents. The primary winding of the transformer is connected to the high voltage or high current circuit, and the meter or relay is connected to the secondary circuit.
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Jackline 66200
Jackline 66200
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Jagathis 66213
Jagathis 66213

 Instrument Transformers are used in AC system for measurement of electrical quantities for example, voltage, current, power, energy, power factor, frequency. Instrument transformers are also used with protective relays for protection of power system. Basic function of Instrument transformers is to step down the AC System voltage and current. The voltage and current level of power system is very high. It is very difficult and costly to design the measuring instruments for measurement of such high level voltage and current. Generally measuring instruments are designed for 5 A and 110 V. The measurement of such very large electrical quantities, can be made possible by using the Instrument transformers with these small rating measuring instruments. Therefore these instrument transformers are very popular in modern power system. There are two types of instrument transformer, current transformer and potential transformer. 
 
 Example of real life application of instrument Transformers 
 Instrument transformers are used to assess the quality of electricity supply through the power networks or other devices in measuring voltages and currents of considerable values.

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Transformer Instrument
Transformer Instrument
Chrisper Chang (65671)
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Transformer instrument
Transformer instrument
Bradilon Jay(65570)
Instrument transformers are high accuracy class electrical devices used to isolate or transform voltage or current levels. The most common usage of instrument transformers is to operate instruments or metering from high voltage or high current circuits, safely isolating secondary control circuitry from the high voltages or currents. The primary winding of the transformer is connected to the high voltage or high current circuit, and the meter or relay is connected to the secondary circuit.
Instrument transformers may also be used as an isolation transformer so that secondary quantities may be used in phase shifting without affecting other primary connected devices.
These instruments transformers are of two types - (i) Current Transformers (CT) and (ii) Potential Transformers (PT).
Current transformers are generally used to measure currents of high magnitude. These transformers step down the current to be measured, so that it can be measured with a normal range ammeter. A Current transformer has only one or very few number of primary turns. The primary winding may be just a conductor or a bus bar placed in a hollow core (as shown in the figure). The secondary winding has large number turns accurately wound for a specific turns ratio. Thus the current transformer steps up (increases) the voltage while stepping down (lowering) the current. The secondary current is measured with the help of an AC ammeter. The turns ratio of a transformer is NP / NS = IS / IP. One of the common application of a current transformer is in a 'Digital Clamp Meter'. 
Potential transformers are also known as voltage transformers and they are basically step down transformers with extremely accurate turns ratio. Potential transformers step down the voltage of high magnitude to a lower voltage which can be measured with standard measuring instrument. These transformers have large number of primary turns and smaller number of secondary turns.

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Transformer instrument
Transformer instrument
Andrew Shampurai Anak Jampi(65433)
Instrument transformers are high accuracy class electrical devices used to isolate or transform voltage or current levels. The most common usage of instrument transformers is to operate instruments or metering from high voltage or high current circuits, safely isolating secondary control circuitry from the high voltages or currents. The primary winding of the transformer is connected to the high voltage or high current circuit, and the meter or relay is connected to the secondary circuit.
1.Current Transformer
-A current transformer (CT) is a type of transformer that is used to measure alternating  current(AC). It produces a current in its secondary which is proportional to the current in its primary.The instrument transformers isolate measurement or protection circuits from the high voltage of the primary system.
Application:For a variety of applications, using current transformers is an efficient way to sense current with minimum insertion loss. Current transformers can perform circuit control, measure current for power measurement and control, and perform roles for safety protection and current limiting.
2.Potential Transformer
-Voltage transformers (VT), also called potential transformers (PT), are a parallel connected type of instrument transformer. They are designed to present negligible load to the supply being measured and have an accurate voltage ratio and phase relationship to enable accurate secondary connected metering.
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What is Transformer Instrument and the application in real life?
What is Transformer Instrument and the application in real life?
Nurul Natasha Binti Jafri (65152)
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Transformer
Transformer 
Delina Nawai Timothy (68508)
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What is Transformer Instr
 What is Transformer Instrument and the application in real life?
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What is Transformer Instrument and the application in real life?HII SIN ANN (66124)
What is Transformer Instrument and the application in real life?HII SIN ANN (66124)
 
What is transformer instrument? 


Instrument transformers are high accuracy class electrical devices used to isolate or transform voltage or current levels. The most common usage of instrument transformers is to operate instruments or metering from high voltage or high current circuits, safely isolating secondary control circuitry from the high voltages or currents. The primary winding of the transformer is connected to the high voltage or high current circuit, and the meter or relay is connected to the secondary circuit. 


Instrument transformers may also be used as an isolation transformer so that secondary quantities may be used in phase shifting without affecting other primary connected devices.[ 

 

What is the application of transformer instrument in daily life? 

Can you imagine your life without electricity? Or, can you imagine even a day without electricity? Obviously not! Electricity is one of the most important elements of our daily life. We have so many appliances, electronics and gadgets today that are the most precious to us. And, we can obviously not use all of these technologies if we have no electric current. But with electricity, there are so many issues of power cuts across the country. Many cities in India face sudden power failures and voltage problems, and continuous issues like these results in the breakdown of appliances within our home. So, is there a solution to this? There is only one way out to set these problems right – and that is by using a transformer. 

Transformers are designed to modify an alternating current voltage that runs from one electric circuit to another through electromagnetic induction. These devices have two or more windings wound around an iron core that either decrease the incoming voltage or raise the voltage of electrical tools, as required. The number of windings depends on the amount of electric voltage that the transformer is required to provide. Transformers have two groups of coils – primary and secondary those are associated with magnetic fields that act as conductors. Step-up transformers are used to increase the voltage and step-down transformers are used to reduce the voltage levels. 

There are a wide range of transformers available in the market, some of them namely – toroidal, isolation, audio output, three phase, E&I, audio line matching, SMPS and UI transformers. All these transformers have different properties and are designed for specific purposes. All of them have different behaviours of handling transfer voltage based on the equipment they are attached to. However, all of these transformers have one main function to perform, and that is to increase or decrease the alternating current, which helps in regulation of current that cuts down electricity bills. 

Electrical components are used to stop the flow of electricity by interrupting the current. These are available for high, medium and low current devices. The circuit breaker is an electrical switch that automatically interrupts circuit damage due to high voltage. This helps in detecting critical defects in the circuit mechanism. There are various types of electrical switches like SF6 circuit breakers, switches installed patches, vacuum circuit breakers, etc. 

Whatever kind of transformer you wish to buy, you need to check and consider some important points while looking for one. First of all, you need to look for a reliable transformer manufacturer and supplier. Check for the protection of the device you want to purchase, and ask the manufacturer for a guarantee. This will help you secure your investment and get the best out of it too. You may also check if the manufacturer offers customized transformers to meet your requirements so that you get a transformer best suited for the purpose you want to purchase it for. You can rely on Miracle Electronics for manufacturing and supplying the best power transformers in India, while taking care of all the shipping, installation and guarantee, whether you purchase ready transformers or customized ones from them. 

 

 

 
 

 

 

 

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Transformer Instrument
Transformer Instrument
Tiffany Aren Moshe (68756)
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t transformer
 t transformer 
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What is transformer instrument and the application in real life ?
What is transformer instrument and the application in real life ? 
Chin Jing Heng (65645)
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curren
 curren
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transformer instrument and its application
transformer instrument and its application 
Ernieza Musa (65895)

Instrument transformers (ITs) are designed to transform voltage or current from the high values in the transmission and distribution systems to the low values that can be utilized by low voltage metering devices. 

Types of transformers:

1.       Current transformers-Connected on the MV network primary circuit, they supply a reduced current value to the secondary circuit, proportional to the network current on which they are installed. Current transformer is of two types-CT: current transformer; LPCT (Low Power Current Transformer): electronic current transformers.
2.       Voltage transformers-Voltage transformers are connected to the MV network primary, they supply the secondary circuit with a reduced voltage value, proportional to the network voltage on which they are installed.


There are three primary applications :

1. metering (for energy billing and transaction purposes)

2.protection control (for system protection and protective relaying purposes)

3.load survey (for economic management of industrial loads).

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instrument transformers and application
instrument transformers and application
Florence Ina anak tading
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Instrument transformers and its application
Instrument transformers and its application

Instrument transformers are high accuracy class electrical devices used to isolate or transform voltage or current levels. The most common usage of instrument transformers is to operate instruments or metering from high voltage or high current circuits, safely isolating secondary control circuitry from the high voltages or currents. The primary winding of the transformer is connected to the high voltage or high current circuit, and the meter or relay is connected to the secondary circuit.


Instrument transformers may also be used as an isolation transformer so that secondary quantities may be used in phase shifting without affecting other primary connected devices


A current transformer (CT) is a type of transformer that is used to measure alternating current (AC). It produces a current in its secondary which is proportional to the current in its primary.


Current transformers, along with voltage or potential transformers, are instrument transformers. Instrument transformers scale the large values of voltage or current to small, standardized values that are easy to handle for instruments and protective relays. The instrument transformers isolate measurement or protection circuits from the high voltage of the primary system. A current transformer provides a secondary current that is accurately proportional to the current flowing in its primary. The current transformer presents a negligible load to the primary circuit.


Current transformers are the current-sensing units of the power system and are used at generating stations, electrical substations, and in industrial and commercial electric power distribution.

Voltage transformers (VT), also called potential transformers (PT), are a parallel connected type of instrument transformer. They are designed to present negligible load to the supply being measured and have an accurate voltage ratio and phase relationship to enable accurate secondary connected metering.

Refference- https://en.m.wikipedia.org/wiki/Instrument_transformer

Application of transmormers video-
https://youtu.be/K8m-mTEbwd4

https://youtu.be/sw_Xfak4LX8

Nurul Aina binti Hanafi
65126
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What is Transformer Instrument and the application in real life?
What is Transformer Instrument and the application in real life?
DICK HU WEI ZHONG (65808)
Instrument transformers transform high currents and voltages to standardized low and easily measurable values that are isolated from the high voltage. There are two types of main instrument transformer which are current transformer and potential transformer.
-Current Transformer is an instrument transformer in which the secondary current is substantially proportional to primary current and differs in phase from it by ideally zero degree.
Application :  Current transformer is used to measure alternating current (AC). It produces a current in its secondary which is proportional to the current in its primary. ... The instrument transformers isolate measurement or protection circuits from the high voltage of the primary system.
-Potential Transformer  is a voltage step-down transformer which reduces the voltage of a high voltage circuit to a lower level for the purpose of measurement. These are connected across or parallel to the line which is to be monitored. The basic principle of operation and construction of this transformer is similar to the standard power transformer.
Application :  It is used for protection called as protection voltage transformers. In some cases potential transformers are used for both metering and protection purposes, in such cases, one secondary winding is connected to metering and other secondary winding is used for protection. 

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Instrume

Instrument transformers are high accuracy class electrical devices used to isolate or transform voltage or current levels. The most common usage of instrument transformers is to operate instruments or metering from high voltage or high current circuits, safely isolating secondary control circuitry from the high voltages or currents. The primary winding of the transformer is connected to the high voltage or high current circuit, and the meter or relay is connected to the secondary circuit.


Instrument transformers may also be used as an isolation transformer so that secondary quantities may be used in phase shifting without affecting other primary connected devices.

Application of transformers-
https://youtu.be/sw_Xfak4LX8
https://youtu.be/K8m-mTEbwd4

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Transformer and it's Application
Transformer and it's Application
Fitri Firdaus bin Md Noor (65990)
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Transformer Instrument
Transformer Instrument 
•Instrument transformer - a.k.a. potential transformer and current transformer.
-used to sense voltage or current in both electronic and power systems. 

Siti Nor Maziah Binti Mohamad Zaini (68737)

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Sharifah
 Sharifah Azizah binti Wan Alwi
65199

Transformer is a device  use  to change the values of voltage or current.

It not only can extend the range of the low range instrument but also isolate them from high current and high voltage ac circuits. 

This makes their handling very safe.

There are two types of instrument transformer, Current and potential transformer:
 

 Application
For measurement of high AC current, usually using low range AC ammeter

For measurement of high AC voltage, usually using low range AC voltmeter with high resistance connected in series

 

 



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Transformer instrument and its application.
Transformer instrument and its application.
 

Transformer instrument are high accuracy class electrical devices used to isolate or transform voltage or current levels. The most common usage of instrument transformers is to operate instruments or metering from high voltage or high current circuits, safely isolating secondary control circuitry from the high voltages or currents. The primary winding of the transformer is connected to the high voltage or high current circuit, and the meter or relay is connected to the secondary circuit. Instrument transformers may also be used as an isolation transformer so that secondary quantities may be used in phase shifting without affecting other primary connected devices.

Types :
 
Potential Transformer
Potential transformers are extremely accurate and normally the type of these potential transformers is falls under step down transformer category.

All potential transformers are generally falls under the shell-type transformer and it’s not much different from the ordinary two winding transformers which discussed.

Secondary of potential transformers are normally completely instead to protect against the high voltage. Potential transformer is connect to line on way.

High voltage primary of potential transformer also should be grounded for additional protection for the operator of the potential transformer. 

 
Current Transformers 
Current transformers are mainly use to measure the huge alternative current in electrical equipments.

In Some high voltage lines where measuring equipments are difficult to connect, these type of current transformers are use with other ammeters to measure the current under alternative current circuits. 
 
To measure the current of high voltage line this current transformer step town the current level in to known ratio.

Normally the current transformer is connected to the line with series connection.

In current transformer the number of turns of coils in secondary is greater primary.

When the primary to secondary current ration of current transformer is 200: 10 then its steps up the voltage 20 times. Clip on type current transformers are the most use current transformers in electrical industry. 

Applications :
The transformer used for impedance matching.
The transformer used for isolate two circuits electrically.
It is used to increase or decrease the alternating voltages in electric power applications.
The transformer used in voltmeter, ammeters, protective relay etc.
The transformer used for step up low voltage in case of measurement.
The transformer used for step down high voltage for safety.
The transformer used in rectifier.
It is used in voltage regulators, voltage stabilizers, power supplies 
 

 JENNIFER ATI 
66258
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Transformer
Transformer
A Transformer is a device which transfers electric current from one circuit to another, usually by the principal of mutual induction. During this process, the frequency remains constant whereas the voltage can be increased or decreased according to the need.

This transfer of electricity occurs with the help of two coils. One of which is known as the Primary Coil, which is connected to a source of alternating current. The other is known as the Secondary Coil, and it is connected to an external circuit. 
Transformer works on the Principle of Faraday’s Law of Mutual Induction. This principle states that the rate of change of flux is directly proportional to the induced electromagnetic flux.


So in short, this mutual induction between the coils is responsible for transferring the electric energy.

Application. 
The transformer used for impedance matching.
The transformer used for isolate two circuits electrically.
It is used to increase or decrease the alternating voltages in electric power applications.
The transformer used in voltmeter, ammeters, protective relay etc.
The transformer used for step up low voltage in case of measurement.
The transformer used for step down high voltage for safety.

Aisyatun Radhiah Binti Mohamad
65359
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Transformer Instrument
Transformer Instrument
Instrument transformers are used to step-down current or voltage to measurable values. They provide standardized, useable levels of current or voltage in a variety of power monitoring and measurement applications.There are two basic types of instrument transformers:
 
Current transformers: are used to step-down current in a predictable fashion with regard to both current and phase. They are often used as inputs to current-powered instruments.
Voltage transformers: produce a secondary voltage that is substantially proportional to the primary voltage, but that differs in phase by an angle that is approximately zero for an appropriate direction of the connections. Often, voltage transformers are used as potential transformers or in combination with current transformers.

Application.
It step up the level of voltage at generation side before transmission and distribution.
in distribution side, for commercial or domestic use of electricity, transformer step down ( decries) the level of voltage for example form 11kV to 220 V single phase and 440 V three phase.
The Current Transformer and Potential Transformer also used power system and in the industry. Also, it is used for impedance matching.  So these were the simple uses and application of transformer.


Jason Sandra (66233)
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Transform
Transform
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Transformer is a dev
 Transformer is a device  use  to change the values of voltage or current.

It not only can extend the range of the low range instrument but also isolate them from high current and high voltage ac circuits. 

This makes their handling very safe.

There are two types of instrument transformer, Current and potential transformer:
 

 Application
For measurement of high AC current, usually using low range AC ammeter

For measurement of high AC voltage, usually using low range AC voltmeter with high resistance connected in series






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Application of transformer instrument
Application of transformer instrument 

Instrument transformers are high accuracy class electrical devices used to isolate or transform voltage or current levels. The most common usage of instrument transformers is to operate instruments or metering from high voltage or high current circuits, safely isolating secondary control circuitry from the high voltages or currents. The primary winding of the transformer is connected to the high voltage or high current circuit, and the meter or relay is connected to the secondary circuit.


Instrument transformers may also be used as an isolation transformer so that secondary quantities may be used in phase shifting without affecting other primary connected devices. 
Next, 
Bar Type Current Transformers
A true bar type current transformer is a toroidal type transformer with a bus bar as an integral part of the current transformer which is permanently inserted through the window of the torroid. The bus bar serves as the primary conductor. The bar type is inserted in the circuit to be monitored. It is a common error to refer to a wound primary type as a bar type because the primary connections are made to bus bars. In the wound type the bus bars are a means of connection and are not a continuous bar.
Lastly, 
The primary purpose of this guide is to give the reader a basic understanding of how to apply instrument transformers in a practical way while observing good engineering practice. It is not intended to make the reader an instrument transformer designer. A special effort will be made to keep to a minimum technical terms and language.

Nurul Syamimi Hanim binti Noraini 
65158


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Instrument transformers are high accuracy class electrical devices used to isolate or transform voltage or current levels. The most common usage of instrument transformers is to operate instruments or metering from high voltage or high current circuits, safely isolating secondary control circuitry from the high voltages or currents. The primary winding of the transformer is connected to the high voltage or high current circuit, and the meter or relay is connected to the secondary circuit.Instrument transformers may also be used as an isolation transformer so that secondary quantities may be used in phase shifting without affecting other primary connected devices
Instrument transformers are high accuracy class electrical devices used to isolate or transform voltage or current levels. The most common usage of instrument transformers is to operate instruments or metering from high voltage or high current circuits, safely isolating secondary control circuitry from the high voltages or currents. The primary winding of the transformer is connected to the high voltage or high current circuit, and the meter or relay is connected to the secondary circuit.Instrument transformers may also be used as an isolation transformer so that secondary quantities may be used in phase shifting without affecting other primary connected devices
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TRANSFORMER INSTRUMENT
TRANSFORMER INSTRUMENT
 In power system, the currents and voltages are very large – Therefore, their direct measurements are not possible. • It might appear that the extension of range could be conveniently done by the use of shunts for currents and multiplier for voltage measurement, as in DC. – But this method is suitable only for small values of current and voltage. • Difficult to achieve accuracy with a shunt on AC • Capability of having shunt of large range is not possible • The power consumed by multipliers become large as the voltage increases • The measuring circuit is not isolated electrically from the power circuit • The solution is to step The solution is to step -down these currents/voltages with the down these currents/voltages with the help of Instrument Transformer – So that, they could be metered with instruments of moderate sizes.
  The application of transformer can be seen on power grid where they need to use step-up and step-down transformer to deliver the electric current throughout the city.

TERRY ANAK VINCENT
65246 
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Instrument Transform
 Instrument Transformer
• In power system, the currents and voltages are very large
– Therefore, their direct measurements are not possible.
• It might appear that the extension of range could be conveniently 
done by the use of shunts for currents and multiplier for voltage 
measurement, as in DC.
– But this method is suitable only for small values of current and voltage.
• Difficult to achieve accuracy with a shunt on AC
• Capability of having shunt of large range is not possible
• The power consumed by multipliers become large as the voltage increases
• The measuring circuit is not isolated electrically from the power circuit
• The solution is to step The solution is to step
-down these currents/voltages with the down these currents/voltages with the
help of Instrument Transformer
– So that, they could be metered with instruments of moderate size 
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Transformer Instrument
Transformer Instrument
 
What is Transformer Instrument and the application in real life? 

Instrument transformers is a device used to reduce the current or voltage values into values can be handled by other equipment. It transforms the power system current and voltage to lower magnitude and provide an isolation between the power network and the relay and other instruments connected to the transformer secondary winding.  

There are some industries require specific industrial transformers due to the usage of power (current) as a major resource for production. Electric arc furnaces (EAF), ladle furnaces (LF) and high-current rectifiers need a specific design to supply the necessary power at a low voltage level. 

 Awangku Muhamad Syahiran
(65513)
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Transformer Instruments
Transformer Instruments
 
Electrical instrument transformers transform high currents and voltages to standardized low and easily measurable values that are isolated from the high voltage. When used for metering purposes, instrument transformers provide voltage or current signals that are very accurate representations of the transmission line values in both magnitude and phase. 

Instrument transformers provide either a current or voltage at a usable level to monitor the voltage or current in a given circuit.There are types of transformer that is current transformer and voltage transformer.Current and voltage transformers are also used to provide the energy to operate various protective relays. The degree to which an instrument transformer produces a current or voltage that is proportionate to the one to be monitored is referred to as its accuracy. 

Current transformer are generally used to step down current in a very predictable fashion with respect to current and phase. Voltage transformer are use to reduce high-voltages down to a level that can be safely applied to voltmeters, or to the voltage-coils of wattmeters or energy meters, or to protective relays, while electrically-isolating those instruments from the high voltage supply. 

Application of instrument transformer:
1.  To assess the quality of electricity supply through the power networks.
2.   To safely determine the alternating current through a power conductor. 
3.  Make the ordinary low current instruments suitable for measurement of high current and isolate them from high voltage.

Gildron David (66041)
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TRANSFORMER INSTRUMENTS
TRANSFORMER INSTRUMENTS
Current transformer
 
 A current transformer is a type of instrument transformer that produce an alternating current in its secondary winding that in proportion to the current flowing through the primary winding as a result of a constant potential on the primary. A current transformer also isolates the measuring instruments from high voltage circuits. Generally,this current transformer has a primary winding, a core and a secondary winding. An alternating magnetic field in the core is produced by the alternating current in the primary, which then induces an alternating current in the secondary winding. The primary winding of the transformer is connected in series with the load and carries the actual current flowing to the load, while the secondary winding is connected to a measuring device or a relay. The number of secondary turns is proportional to the current flowing through the primary. For example the larger the magnitude of current flowing through the primary, more the number of secondary turns. There are two type of current transformers; measuring current transformers and protective current transformers In industry, current transformers are used extensively for measuring current and monitoring the operation of the power grid.
 
 Voltage Transformer
 
 Voltage transformers (VT), also called potential transformers (PT), are a parallel connected type of instrument transformer are designed to present negligible load to the supply being measured and have an accurate voltage ratio and phase relationship to enable accurate secondary connected metering. There are three primary types of potential transformers (PT): electromagnetic, capacitor, and optical. The electromagnetic potential transformer is a wire-wound transformer. The capacitor voltage transformer (CVT) uses a capacitance potential divider and is used at higher voltages due to a lower cost than an electromagnetic PT. An optical voltage transformer exploits the Faraday effect, rotating polarized light, in optical materials.
 
 TINA LINDA ANAK ACHILLES 65247

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Transformer Instrument and Application
Transformer Instrument and Application

Nurfarahin Binti Rahman Abdullah (65114)

Instrument transformers are high accuracy class electrical devices used to isolate or transform voltage or current levels. The most common usage of instrument transformers is to operate instruments or metering from high voltage or high current circuits, safely isolating secondary control circuitry from the high voltages or currents. The primary winding of the transformer is connected to the high voltage or high current circuit, and the meter or relay is connected to the secondary circuit.

Current transformers (CT) are a series connected type of instrument transformer. They are designed to present negligible load to the supply being measured and have an accurate current ratio and phase relationship to enable accurate secondary connected metering.

Current transformers are often constructed by passing a single primary turn (either an insulated cable or an uninsulated bus bar) through a well-insulated toroidal core wrapped with many turns of wire. This affords easy implementation on high voltage bushings of grid transformers and other devices by installing the secondary turn core inside high-voltage bushing insulators and using the pass-through conductor as a single turn primary.

Voltage transformers (VT), also called potential transformers (PT), are a parallel connected type of instrument transformer. They are designed to present negligible load to the supply being measured and have an accurate voltage ratio and phase relationship to enable accurate secondary connected metering

Application of Current Transformer:
A current clamp uses a current transformer with a split core that can be easily wrapped around a conductor in a circuit. This is a common method used in portable current measuring instruments but permanent installations use more economical types of current transformer. Specially constructed wideband CTs are also used, usually with an oscilloscope, to measure high frequency waveforms or pulsed currents within pulsed power systems. One type provides an IR voltage output that is proportional to the measured current; another, called a Rogowski coil, requires an external integrator in order to provide a proportional output.

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What is Transformer Instrument and the application in real life?
What is Transformer Instrument and the application in real life?
 
Transformer instrument  is the high accuracy class electrical devices which are used to isolate or transform voltage or current levels. The most common usage of instrument transformers is to operate instruments or metering from high voltage or high current circuits, safely isolating secondary control circuitry from the high voltages or currents. The primary winding of the transformer is connected to the high voltage or high current circuit, and the meter or relay is connected to the secondary circuit.


Instrument transformers may also be used as an isolation transformer
 so that secondary quantities may be used in phase shifting without affecting other primary connected devices.[1] 

65169
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Instrument transform
 Instrument transformers are created to transform voltage or current from high values in the transmission and distribution systems to the low values that can be utilized by low voltage metering device. 
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Transformer Instrument
Transformer Instrument
Nurliza Bt Mahli (68810)
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Transformer instrument and its application.
Transformer instrument and its application.
 

Transformer instrument are high accuracy class electrical devices used to isolate or transform voltage or current levels. The most common usage of instrument transformers is to operate instruments or metering from high voltage or high current circuits, safely isolating secondary control circuitry from the high voltages or currents. The primary winding of the transformer is connected to the high voltage or high current circuit, and the meter or relay is connected to the secondary circuit. Instrument transformers may also be used as an isolation transformer so that secondary quantities may be used in phase shifting without affecting other primary connected devices.

Types :
 
Potential Transformer
Potential transformers are extremely accurate and normally the type of these potential transformers is falls under step down transformer category.

All potential transformers are generally falls under the shell-type transformer and it’s not much different from the ordinary two winding transformers which discussed.

Secondary of potential transformers are normally completely instead to protect against the high voltage. Potential transformer is connect to line on way.

High voltage primary of potential transformer also should be grounded for additional protection for the operator of the potential transformer. 

 
Current Transformers 
Current transformers are mainly use to measure the huge alternative current in electrical equipments.

In Some high voltage lines where measuring equipments are difficult to connect, these type of current transformers are use with other ammeters to measure the current under alternative current circuits. 
 
To measure the current of high voltage line this current transformer step town the current level in to known ratio.

Normally the current transformer is connected to the line with series connection.

In current transformer the number of turns of coils in secondary is greater primary.

When the primary to secondary current ration of current transformer is 200: 10 then its steps up the voltage 20 times. Clip on type current transformers are the most use current transformers in electrical industry. 

Applications :
The transformer used for impedance matching.
The transformer used for isolate two circuits electrically.
It is used to increase or decrease the alternating voltages in electric power applications.
The transformer used in voltmeter, ammeters, protective relay etc.
The transformer used for step up low voltage in case of measurement.
The transformer used for step down high voltage for safety.
The transformer used in rectifier.
It is used in voltage regulators, voltage stabilizers, power supplies 
 

 JENNIFER ATI 
66258
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Transformer
Transformer
A Transformer is a device which transfers electric current from one circuit to another, usually by the principal of mutual induction. During this process, the frequency remains constant whereas the voltage can be increased or decreased according to the need.

This transfer of electricity occurs with the help of two coils. One of which is known as the Primary Coil, which is connected to a source of alternating current. The other is known as the Secondary Coil, and it is connected to an external circuit. 
Transformer works on the Principle of Faraday’s Law of Mutual Induction. This principle states that the rate of change of flux is directly proportional to the induced electromagnetic flux.


So in short, this mutual induction between the coils is responsible for transferring the electric energy.

Application. 
The transformer used for impedance matching.
The transformer used for isolate two circuits electrically.
It is used to increase or decrease the alternating voltages in electric power applications.
The transformer used in voltmeter, ammeters, protective relay etc.
The transformer used for step up low voltage in case of measurement.
The transformer used for step down high voltage for safety.

Aisyatun Radhiah Binti Mohamad
65359
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Transformer Instrument
Transformer Instrument
Instrument transformers are used to step-down current or voltage to measurable values. They provide standardized, useable levels of current or voltage in a variety of power monitoring and measurement applications.There are two basic types of instrument transformers:
 
Current transformers: are used to step-down current in a predictable fashion with regard to both current and phase. They are often used as inputs to current-powered instruments.
Voltage transformers: produce a secondary voltage that is substantially proportional to the primary voltage, but that differs in phase by an angle that is approximately zero for an appropriate direction of the connections. Often, voltage transformers are used as potential transformers or in combination with current transformers.

Application.
It step up the level of voltage at generation side before transmission and distribution.
in distribution side, for commercial or domestic use of electricity, transformer step down ( decries) the level of voltage for example form 11kV to 220 V single phase and 440 V three phase.
The Current Transformer and Potential Transformer also used power system and in the industry. Also, it is used for impedance matching.  So these were the simple uses and application of transformer.


Jason Sandra (66233)
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Transform
Transform
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Application of transformer instrument
Application of transformer instrument 

Instrument transformers are high accuracy class electrical devices used to isolate or transform voltage or current levels. The most common usage of instrument transformers is to operate instruments or metering from high voltage or high current circuits, safely isolating secondary control circuitry from the high voltages or currents. The primary winding of the transformer is connected to the high voltage or high current circuit, and the meter or relay is connected to the secondary circuit.


Instrument transformers may also be used as an isolation transformer so that secondary quantities may be used in phase shifting without affecting other primary connected devices. 
Next, 
Bar Type Current Transformers
A true bar type current transformer is a toroidal type transformer with a bus bar as an integral part of the current transformer which is permanently inserted through the window of the torroid. The bus bar serves as the primary conductor. The bar type is inserted in the circuit to be monitored. It is a common error to refer to a wound primary type as a bar type because the primary connections are made to bus bars. In the wound type the bus bars are a means of connection and are not a continuous bar.
Lastly, 
The primary purpose of this guide is to give the reader a basic understanding of how to apply instrument transformers in a practical way while observing good engineering practice. It is not intended to make the reader an instrument transformer designer. A special effort will be made to keep to a minimum technical terms and language.

Nurul Syamimi Hanim binti Noraini 
65158


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Instrument transformers are high accuracy class electrical devices used to isolate or transform voltage or current levels. The most common usage of instrument transformers is to operate instruments or metering from high voltage or high current circuits, safely isolating secondary control circuitry from the high voltages or currents. The primary winding of the transformer is connected to the high voltage or high current circuit, and the meter or relay is connected to the secondary circuit.Instrument transformers may also be used as an isolation transformer so that secondary quantities may be used in phase shifting without affecting other primary connected devices
Instrument transformers are high accuracy class electrical devices used to isolate or transform voltage or current levels. The most common usage of instrument transformers is to operate instruments or metering from high voltage or high current circuits, safely isolating secondary control circuitry from the high voltages or currents. The primary winding of the transformer is connected to the high voltage or high current circuit, and the meter or relay is connected to the secondary circuit.Instrument transformers may also be used as an isolation transformer so that secondary quantities may be used in phase shifting without affecting other primary connected devices
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TRANSFORMER INSTRUMENT
TRANSFORMER INSTRUMENT
 In power system, the currents and voltages are very large – Therefore, their direct measurements are not possible. • It might appear that the extension of range could be conveniently done by the use of shunts for currents and multiplier for voltage measurement, as in DC. – But this method is suitable only for small values of current and voltage. • Difficult to achieve accuracy with a shunt on AC • Capability of having shunt of large range is not possible • The power consumed by multipliers become large as the voltage increases • The measuring circuit is not isolated electrically from the power circuit • The solution is to step The solution is to step -down these currents/voltages with the down these currents/voltages with the help of Instrument Transformer – So that, they could be metered with instruments of moderate sizes.
  The application of transformer can be seen on power grid where they need to use step-up and step-down transformer to deliver the electric current throughout the city.

TERRY ANAK VINCENT
65246 
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Instrument Transform
 Instrument Transformer
• In power system, the currents and voltages are very large
– Therefore, their direct measurements are not possible.
• It might appear that the extension of range could be conveniently 
done by the use of shunts for currents and multiplier for voltage 
measurement, as in DC.
– But this method is suitable only for small values of current and voltage.
• Difficult to achieve accuracy with a shunt on AC
• Capability of having shunt of large range is not possible
• The power consumed by multipliers become large as the voltage increases
• The measuring circuit is not isolated electrically from the power circuit
• The solution is to step The solution is to step
-down these currents/voltages with the down these currents/voltages with the
help of Instrument Transformer
– So that, they could be metered with instruments of moderate size 
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Transformer Instrument
Transformer Instrument
 
What is Transformer Instrument and the application in real life? 

Instrument transformers is a device used to reduce the current or voltage values into values can be handled by other equipment. It transforms the power system current and voltage to lower magnitude and provide an isolation between the power network and the relay and other instruments connected to the transformer secondary winding.  

There are some industries require specific industrial transformers due to the usage of power (current) as a major resource for production. Electric arc furnaces (EAF), ladle furnaces (LF) and high-current rectifiers need a specific design to supply the necessary power at a low voltage level. 

 Awangku Muhamad Syahiran
(65513)
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Transformer Instruments
Transformer Instruments
 
Electrical instrument transformers transform high currents and voltages to standardized low and easily measurable values that are isolated from the high voltage. When used for metering purposes, instrument transformers provide voltage or current signals that are very accurate representations of the transmission line values in both magnitude and phase. 

Instrument transformers provide either a current or voltage at a usable level to monitor the voltage or current in a given circuit.There are types of transformer that is current transformer and voltage transformer.Current and voltage transformers are also used to provide the energy to operate various protective relays. The degree to which an instrument transformer produces a current or voltage that is proportionate to the one to be monitored is referred to as its accuracy. 

Current transformer are generally used to step down current in a very predictable fashion with respect to current and phase. Voltage transformer are use to reduce high-voltages down to a level that can be safely applied to voltmeters, or to the voltage-coils of wattmeters or energy meters, or to protective relays, while electrically-isolating those instruments from the high voltage supply. 

Application of instrument transformer:
1.  To assess the quality of electricity supply through the power networks.
2.   To safely determine the alternating current through a power conductor. 
3.  Make the ordinary low current instruments suitable for measurement of high current and isolate them from high voltage.

Gildron David (66041)
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TRANSFORMER INSTRUMENTS
TRANSFORMER INSTRUMENTS
Current transformer
 
 A current transformer is a type of instrument transformer that produce an alternating current in its secondary winding that in proportion to the current flowing through the primary winding as a result of a constant potential on the primary. A current transformer also isolates the measuring instruments from high voltage circuits. Generally,this current transformer has a primary winding, a core and a secondary winding. An alternating magnetic field in the core is produced by the alternating current in the primary, which then induces an alternating current in the secondary winding. The primary winding of the transformer is connected in series with the load and carries the actual current flowing to the load, while the secondary winding is connected to a measuring device or a relay. The number of secondary turns is proportional to the current flowing through the primary. For example the larger the magnitude of current flowing through the primary, more the number of secondary turns. There are two type of current transformers; measuring current transformers and protective current transformers In industry, current transformers are used extensively for measuring current and monitoring the operation of the power grid.
 
 Voltage Transformer
 
 Voltage transformers (VT), also called potential transformers (PT), are a parallel connected type of instrument transformer are designed to present negligible load to the supply being measured and have an accurate voltage ratio and phase relationship to enable accurate secondary connected metering. There are three primary types of potential transformers (PT): electromagnetic, capacitor, and optical. The electromagnetic potential transformer is a wire-wound transformer. The capacitor voltage transformer (CVT) uses a capacitance potential divider and is used at higher voltages due to a lower cost than an electromagnetic PT. An optical voltage transformer exploits the Faraday effect, rotating polarized light, in optical materials.
 
 TINA LINDA ANAK ACHILLES 65247

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Transformer Instrument and Application
Transformer Instrument and Application

Nurfarahin Binti Rahman Abdullah (65114)

Instrument transformers are high accuracy class electrical devices used to isolate or transform voltage or current levels. The most common usage of instrument transformers is to operate instruments or metering from high voltage or high current circuits, safely isolating secondary control circuitry from the high voltages or currents. The primary winding of the transformer is connected to the high voltage or high current circuit, and the meter or relay is connected to the secondary circuit.

Current transformers (CT) are a series connected type of instrument transformer. They are designed to present negligible load to the supply being measured and have an accurate current ratio and phase relationship to enable accurate secondary connected metering.

Current transformers are often constructed by passing a single primary turn (either an insulated cable or an uninsulated bus bar) through a well-insulated toroidal core wrapped with many turns of wire. This affords easy implementation on high voltage bushings of grid transformers and other devices by installing the secondary turn core inside high-voltage bushing insulators and using the pass-through conductor as a single turn primary.

Voltage transformers (VT), also called potential transformers (PT), are a parallel connected type of instrument transformer. They are designed to present negligible load to the supply being measured and have an accurate voltage ratio and phase relationship to enable accurate secondary connected metering

Application of Current Transformer:
A current clamp uses a current transformer with a split core that can be easily wrapped around a conductor in a circuit. This is a common method used in portable current measuring instruments but permanent installations use more economical types of current transformer. Specially constructed wideband CTs are also used, usually with an oscilloscope, to measure high frequency waveforms or pulsed currents within pulsed power systems. One type provides an IR voltage output that is proportional to the measured current; another, called a Rogowski coil, requires an external integrator in order to provide a proportional output.

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What is Transformer Instrument and the application in real life?
What is Transformer Instrument and the application in real life?
 
Transformer instrument  is the high accuracy class electrical devices which are used to isolate or transform voltage or current levels. The most common usage of instrument transformers is to operate instruments or metering from high voltage or high current circuits, safely isolating secondary control circuitry from the high voltages or currents. The primary winding of the transformer is connected to the high voltage or high current circuit, and the meter or relay is connected to the secondary circuit.


Instrument transformers may also be used as an isolation transformer
 so that secondary quantities may be used in phase shifting without affecting other primary connected devices.[1] 

65169
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Syarifah Husniyah (65237)
Syarifah Husniyah (65237)
Instrument transformers are created to transform voltage or current from high values in the transmission and distribution systems to the low values that can be utilized by low voltage metering device. There are two type of instruments transformer which are current transformer and voltage transformer. 
There are some application of instrument transformer in daily life which are:
1. Regulating alternating current
All transformers have one basic function: increasing or decreasing alternating current within the electrical system. By regulating the flow of current, the transformer allows for increased energy efficiency, which regulates and ultimately lowers electricity bills.

2. Stopping and starting the flow of electricity
Transformers are also useful in stopping the flow of electricity and interrupting an electric current. Transformers are commonly present in circuit breakers, where they utilize a switch to automatically interrupt the flow of electricity and to prevent damage that can occur as a result of high voltage.

3. Battery charging
The concept of battery charging is fuelled by the functioning of generators. Transformers are used to control the voltage that enters the battery during the charging process in order to prevent any damages that can occur to the internal battery components. This is important because an unregulated voltage can result in high surges during charging of batteries.

4. Steel manufacturing
Steel manufacturing plants rely on the functioning of high voltage transformers to provide a range of voltages for the manufacturing process. High currents are required during melting and welding of steel, and lower current are required during the cooling process. In order to provide this range of voltages, transformers are necessary for regulating currents within the system.

5. Electrochemicals
In chemical engineering and manufacturing processes, electrolysis is normally fuelled by the functioning of transformers. Metals such as copper, zinc, and aluminum are normally used for the purposes of electroplating. During the process, transformers provide a regulated electrical current that is used to drive the chemical reaction from the beginning stages until completion. The current can be therefore be regulated as the reaction proceeds.


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Transformer Instrument
Transformer Instrument
Nurliza Bt Mahli (68810)
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# data[].attributes.body
Instrument transformers is a special transformer that are used in electrical power system for stepping down currents and voltages of the system for measuring and protection purpose.

Instrument transformer are two types:
-Current Transformer (CT)
-Potential Transformer (PT)

Application of instrument transformer in real life:
1. To assess the quality of electricity supply through the power networks.
2.The transformer used for step down high voltage for safety.
3.To increase or decrease the alternating voltages in electric power applications.

# data[].attributes.attachment_link.title
Instrument Transformers ( Jackline 66200 )

# data[].attributes.body
Instrument Transformers are used in AC system for measurement of electrical quantities for example, voltage, current, power, energy, power factor, frequency. Instrument transformers are also used with protective relays for protection of power system. Basic function of Instrument transformers is to step down the AC System voltage and current. The voltage and current level of power system is very high. It is very difficult and costly to design the measuring instruments for measurement of such high level voltage and current. Generally measuring instruments are designed for 5 A and 110 V. The measurement of such very large electrical quantities, can be made possible by using the Instrument transformers with these small rating measuring instruments. Therefore these instrument transformers are very popular in modern power system. There are two types of instrument transformer, current transformer and potential transformer.

Example of real life application of instrument Transformers
Instrument transformers are used to assess the quality of electricity supply through the power networks or other devices in measuring voltages and currents of considerable values.

# data[].attributes.body
Chrisper Chang (65671)

# data[].attributes.body
Bradilon Jay(65570)
Instrument transformers are high accuracy class electrical devices used to isolate or transform voltage or current levels. The most common usage of instrument transformers is to operate instruments or metering from high voltage or high current circuits, safely isolating secondary control circuitry from the high voltages or currents. The primary winding of the transformer is connected to the high voltage or high current circuit, and the meter or relay is connected to the secondary circuit.

Instrument transformers may also be used as an isolation transformer so that secondary quantities may be used in phase shifting without affecting other primary connected devices.

These instruments transformers are of two types - (i) Current Transformers (CT) and (ii) Potential Transformers (PT).

Current transformers are generally used to measure currents of high magnitude. These transformers step down the current to be measured, so that it can be measured with a normal range ammeter. A Current transformer has only one or very few number of primary turns. The primary winding may be just a conductor or a bus bar placed in a hollow core (as shown in the figure). The secondary winding has large number turns accurately wound for a specific turns ratio. Thus the current transformer steps up (increases) the voltage while stepping down (lowering) the current. The secondary current is measured with the help of an AC ammeter. The turns ratio of a transformer is NP / NS = IS / IP. One of the common application of a current transformer is in a 'Digital Clamp Meter'.

Potential transformers are also known as voltage transformers and they are basically step down transformers with extremely accurate turns ratio. Potential transformers step down the voltage of high magnitude to a lower voltage which can be measured with standard measuring instrument. These transformers have large number of primary turns and smaller number of secondary turns.

# data[].attributes.body
Andrew Shampurai Anak Jampi(65433)
Instrument transformers are high accuracy class electrical devices used to isolate or transform voltage or current levels. The most common usage of instrument transformers is to operate instruments or metering from high voltage or high current circuits, safely isolating secondary control circuitry from the high voltages or currents. The primary winding of the transformer is connected to the high voltage or high current circuit, and the meter or relay is connected to the secondary circuit.
1.Current Transformer
-A current transformer (CT) is a type of transformer that is used to measure alternating  current(AC). It produces a current in its secondary which is proportional to the current in its primary.The instrument transformers isolate measurement or protection circuits from the high voltage of the primary system.
Application:For a variety of applications, using current transformers is an efficient way to sense current with minimum insertion loss. Current transformers can perform circuit control, measure current for power measurement and control, and perform roles for safety protection and current limiting.
2.Potential Transformer
-Voltage transformers (VT), also called potential transformers (PT), are a parallel connected type of instrument transformer. They are designed to present negligible load to the supply being measured and have an accurate voltage ratio and phase relationship to enable accurate secondary connected metering.

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What is Transformer Instrument and the application in real life?

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What is Transformer Instrument and the application in real life?

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Nurul Natasha Binti Jafri (65152)

# data[].attributes.body
Delina Nawai Timothy (68508)

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Application of an Instrument Transformer

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What is Transformer Instrument and the application in real life?

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What is Transformer Instrument and the application in real life?HII SIN ANN (66124)

# data[].attributes.subject
What is Transformer Instrument and the application in real life?HII SIN ANN (66124)

# data[].attributes.body
What is transformer instrument?

Instrument transformers are high accuracy class electrical devices used to isolate or transform voltage or current levels. The most common usage of instrument transformers is to operate instruments or metering from high voltage or high current circuits, safely isolating secondary control circuitry from the high voltages or currents. The primary winding of the transformer is connected to the high voltage or high current circuit, and the meter or relay is connected to the secondary circuit.

Instrument transformers may also be used as an isolation transformer so that secondary quantities may be used in phase shifting without affecting other primary connected devices.[

What is the application of transformer instrument in daily life?

Can you imagine your life without electricity? Or, can you imagine even a day without electricity? Obviously not! Electricity is one of the most important elements of our daily life. We have so many appliances, electronics and gadgets today that are the most precious to us. And, we can obviously not use all of these technologies if we have no electric current. But with electricity, there are so many issues of power cuts across the country. Many cities in India face sudden power failures and voltage problems, and continuous issues like these results in the breakdown of appliances within our home. So, is there a solution to this? There is only one way out to set these problems right – and that is by using a transformer.

Transformers are designed to modify an alternating current voltage that runs from one electric circuit to another through electromagnetic induction. These devices have two or more windings wound around an iron core that either decrease the incoming voltage or raise the voltage of electrical tools, as required. The number of windings depends on the amount of electric voltage that the transformer is required to provide. Transformers have two groups of coils – primary and secondary those are associated with magnetic fields that act as conductors. Step-up transformers are used to increase the voltage and step-down transformers are used to reduce the voltage levels.

There are a wide range of transformers available in the market, some of them namely – toroidal, isolation, audio output, three phase, E&I, audio line matching, SMPS and UI transformers. All these transformers have different properties and are designed for specific purposes. All of them have different behaviours of handling transfer voltage based on the equipment they are attached to. However, all of these transformers have one main function to perform, and that is to increase or decrease the alternating current, which helps in regulation of current that cuts down electricity bills.

Electrical components are used to stop the flow of electricity by interrupting the current. These are available for high, medium and low current devices. The circuit breaker is an electrical switch that automatically interrupts circuit damage due to high voltage. This helps in detecting critical defects in the circuit mechanism. There are various types of electrical switches like SF6 circuit breakers, switches installed patches, vacuum circuit breakers, etc.

Whatever kind of transformer you wish to buy, you need to check and consider some important points while looking for one. First of all, you need to look for a reliable transformer manufacturer and supplier. Check for the protection of the device you want to purchase, and ask the manufacturer for a guarantee. This will help you secure your investment and get the best out of it too. You may also check if the manufacturer offers customized transformers to meet your requirements so that you get a transformer best suited for the purpose you want to purchase it for. You can rely on Miracle Electronics for manufacturing and supplying the best power transformers in India, while taking care of all the shipping, installation and guarantee, whether you purchase ready transformers or customized ones from them.

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Tiffany Aren Moshe (68756)

# data[].attributes.headline
What is transformer instrument and the application in real life ? 

# data[].attributes.subject
What is transformer instrument and the application in real life ? 

# data[].attributes.body
Chin Jing Heng (65645)

# data[].attributes.headline
transformer instrument and its application 

# data[].attributes.subject
transformer instrument and its application 

# data[].attributes.body
Ernieza Musa (65895)

Instrument transformers (ITs) are designed to transform voltage or current from the high values in the transmission and distribution systems to the low values that can be utilized by low voltage metering devices.

Types of transformers:

1.       Current transformers-Connected on the MV network primary circuit, they supply a reduced current value to the secondary circuit, proportional to the network current on which they are installed. Current transformer is of two types-CT: current transformer; LPCT (Low Power Current Transformer): electronic current transformers.

2.       Voltage transformers-Voltage transformers are connected to the MV network primary, they supply the secondary circuit with a reduced voltage value, proportional to the network voltage on which they are installed.

There are three primary applications :

1. metering (for energy billing and transaction purposes)

2.protection control (for system protection and protective relaying purposes)

3.load survey (for economic management of industrial loads).

# data[].attributes.body
Florence Ina anak tading

# data[].attributes.headline
Instrument transformers and its application

# data[].attributes.subject
Instrument transformers and its application

# data[].attributes.body
Instrument transformers are high accuracy class electrical devices used to isolate or transform voltage or current levels. The most common usage of instrument transformers is to operate instruments or metering from high voltage or high current circuits, safely isolating secondary control circuitry from the high voltages or currents. The primary winding of the transformer is connected to the high voltage or high current circuit, and the meter or relay is connected to the secondary circuit.

Instrument transformers may also be used as an isolation transformer so that secondary quantities may be used in phase shifting without affecting other primary connected devices

A current transformer (CT) is a type of transformer that is used to measure alternating current (AC). It produces a current in its secondary which is proportional to the current in its primary.

Current transformers, along with voltage or potential transformers, are instrument transformers. Instrument transformers scale the large values of voltage or current to small, standardized values that are easy to handle for instruments and protective relays. The instrument transformers isolate measurement or protection circuits from the high voltage of the primary system. A current transformer provides a secondary current that is accurately proportional to the current flowing in its primary. The current transformer presents a negligible load to the primary circuit.

Current transformers are the current-sensing units of the power system and are used at generating stations, electrical substations, and in industrial and commercial electric power distribution.

Voltage transformers (VT), also called potential transformers (PT), are a parallel connected type of instrument transformer. They are designed to present negligible load to the supply being measured and have an accurate voltage ratio and phase relationship to enable accurate secondary connected metering.

Refference- https://en.m.wikipedia.org/wiki/Instrument_transformer

Application of transmormers video-
https://youtu.be/K8m-mTEbwd4

https://youtu.be/sw_Xfak4LX8

Nurul Aina binti Hanafi
65126

# data[].attributes.headline
What is Transformer Instrument and the application in real life?

# data[].attributes.subject
What is Transformer Instrument and the application in real life?

# data[].attributes.body
DICK HU WEI ZHONG (65808)
Instrument transformers transform high currents and voltages to standardized low and easily measurable values that are isolated from the high voltage. There are two types of main instrument transformer which are current transformer and potential transformer.
-Current Transformer is an instrument transformer in which the secondary current is substantially proportional to primary current and differs in phase from it by ideally zero degree.
Application :  Current transformer is used to measure alternating current (AC). It produces a current in its secondary which is proportional to the current in its primary. ... The instrument transformers isolate measurement or protection circuits from the high voltage of the primary system.
-Potential Transformer  is a voltage step-down transformer which reduces the voltage of a high voltage circuit to a lower level for the purpose of measurement. These are connected across or parallel to the line which is to be monitored. The basic principle of operation and construction of this transformer is similar to the standard power transformer.
Application : It is used for protection called as protection voltage transformers. In some cases potential transformers are used for both metering and protection purposes, in such cases, one secondary winding is connected to metering and other secondary winding is used for protection.

# data[].attributes.body
Instrument transformers are high accuracy class electrical devices used to isolate or transform voltage or current levels. The most common usage of instrument transformers is to operate instruments or metering from high voltage or high current circuits, safely isolating secondary control circuitry from the high voltages or currents. The primary winding of the transformer is connected to the high voltage or high current circuit, and the meter or relay is connected to the secondary circuit.

Instrument transformers may also be used as an isolation transformer so that secondary quantities may be used in phase shifting without affecting other primary connected devices.

Application of transformers-
https://youtu.be/sw_Xfak4LX8
https://youtu.be/K8m-mTEbwd4

# data[].attributes.body
Fitri Firdaus bin Md Noor (65990)

# data[].attributes.body
•Instrument transformer - a.k.a. potential transformer and current transformer.

-used to sense voltage or current in both electronic and power systems.

Siti Nor Maziah Binti Mohamad Zaini (68737)

# data[].attributes.body
Sharifah Azizah binti Wan Alwi
65199

Transformer is a device  use  to change the values of voltage or current.

It not only can extend the range of the low range instrument but also isolate them from high current and high voltage ac circuits.

This makes their handling very safe.

There are two types of instrument transformer, Current and potential transformer:
Application
For measurement of high AC current, usually using low range AC ammeter

For measurement of high AC voltage, usually using low range AC voltmeter with high resistance connected in series

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Transformer instrument and its application.
Transformer instrument and its application.
 

Transformer instrument are high accuracy class electrical devices used to isolate or transform voltage or current levels. The most common usage of instrument transformers is to operate instruments or metering from high voltage or high current circuits, safely isolating secondary control circuitry from the high voltages or currents. The primary winding of the transformer is connected to the high voltage or high current circuit, and the meter or relay is connected to the secondary circuit. Instrument transformers may also be used as an isolation transformer so that secondary quantities may be used in phase shifting without affecting other primary connected devices.

Types :
 
Potential Transformer
Potential transformers are extremely accurate and normally the type of these potential transformers is falls under step down transformer category.

All potential transformers are generally falls under the shell-type transformer and it’s not much different from the ordinary two winding transformers which discussed.

Secondary of potential transformers are normally completely instead to protect against the high voltage. Potential transformer is connect to line on way.

High voltage primary of potential transformer also should be grounded for additional protection for the operator of the potential transformer. 

 
Current Transformers 
Current transformers are mainly use to measure the huge alternative current in electrical equipments.

In Some high voltage lines where measuring equipments are difficult to connect, these type of current transformers are use with other ammeters to measure the current under alternative current circuits. 
 
To measure the current of high voltage line this current transformer step town the current level in to known ratio.

Normally the current transformer is connected to the line with series connection.

In current transformer the number of turns of coils in secondary is greater primary.

When the primary to secondary current ration of current transformer is 200: 10 then its steps up the voltage 20 times. Clip on type current transformers are the most use current transformers in electrical industry. 

Applications :
The transformer used for impedance matching.
The transformer used for isolate two circuits electrically.
It is used to increase or decrease the alternating voltages in electric power applications.
The transformer used in voltmeter, ammeters, protective relay etc.
The transformer used for step up low voltage in case of measurement.
The transformer used for step down high voltage for safety.
The transformer used in rectifier.
It is used in voltage regulators, voltage stabilizers, power supplies 
 

 JENNIFER ATI 
66258
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Transformer
Transformer
A Transformer is a device which transfers electric current from one circuit to another, usually by the principal of mutual induction. During this process, the frequency remains constant whereas the voltage can be increased or decreased according to the need.

This transfer of electricity occurs with the help of two coils. One of which is known as the Primary Coil, which is connected to a source of alternating current. The other is known as the Secondary Coil, and it is connected to an external circuit. 
Transformer works on the Principle of Faraday’s Law of Mutual Induction. This principle states that the rate of change of flux is directly proportional to the induced electromagnetic flux.


So in short, this mutual induction between the coils is responsible for transferring the electric energy.

Application. 
The transformer used for impedance matching.
The transformer used for isolate two circuits electrically.
It is used to increase or decrease the alternating voltages in electric power applications.
The transformer used in voltmeter, ammeters, protective relay etc.
The transformer used for step up low voltage in case of measurement.
The transformer used for step down high voltage for safety.

Aisyatun Radhiah Binti Mohamad
65359
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Transformer Instrument
Transformer Instrument
Instrument transformers are used to step-down current or voltage to measurable values. They provide standardized, useable levels of current or voltage in a variety of power monitoring and measurement applications.There are two basic types of instrument transformers:
 
Current transformers: are used to step-down current in a predictable fashion with regard to both current and phase. They are often used as inputs to current-powered instruments.
Voltage transformers: produce a secondary voltage that is substantially proportional to the primary voltage, but that differs in phase by an angle that is approximately zero for an appropriate direction of the connections. Often, voltage transformers are used as potential transformers or in combination with current transformers.

Application.
It step up the level of voltage at generation side before transmission and distribution.
in distribution side, for commercial or domestic use of electricity, transformer step down ( decries) the level of voltage for example form 11kV to 220 V single phase and 440 V three phase.
The Current Transformer and Potential Transformer also used power system and in the industry. Also, it is used for impedance matching.  So these were the simple uses and application of transformer.


Jason Sandra (66233)
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Transform
Transform
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Transformer is a dev
 Transformer is a device  use  to change the values of voltage or current.

It not only can extend the range of the low range instrument but also isolate them from high current and high voltage ac circuits. 

This makes their handling very safe.

There are two types of instrument transformer, Current and potential transformer:
 

 Application
For measurement of high AC current, usually using low range AC ammeter

For measurement of high AC voltage, usually using low range AC voltmeter with high resistance connected in series






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Application of transformer instrument
Application of transformer instrument 

Instrument transformers are high accuracy class electrical devices used to isolate or transform voltage or current levels. The most common usage of instrument transformers is to operate instruments or metering from high voltage or high current circuits, safely isolating secondary control circuitry from the high voltages or currents. The primary winding of the transformer is connected to the high voltage or high current circuit, and the meter or relay is connected to the secondary circuit.


Instrument transformers may also be used as an isolation transformer so that secondary quantities may be used in phase shifting without affecting other primary connected devices. 
Next, 
Bar Type Current Transformers
A true bar type current transformer is a toroidal type transformer with a bus bar as an integral part of the current transformer which is permanently inserted through the window of the torroid. The bus bar serves as the primary conductor. The bar type is inserted in the circuit to be monitored. It is a common error to refer to a wound primary type as a bar type because the primary connections are made to bus bars. In the wound type the bus bars are a means of connection and are not a continuous bar.
Lastly, 
The primary purpose of this guide is to give the reader a basic understanding of how to apply instrument transformers in a practical way while observing good engineering practice. It is not intended to make the reader an instrument transformer designer. A special effort will be made to keep to a minimum technical terms and language.

Nurul Syamimi Hanim binti Noraini 
65158


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Instrument transformers are high accuracy class electrical devices used to isolate or transform voltage or current levels. The most common usage of instrument transformers is to operate instruments or metering from high voltage or high current circuits, safely isolating secondary control circuitry from the high voltages or currents. The primary winding of the transformer is connected to the high voltage or high current circuit, and the meter or relay is connected to the secondary circuit.Instrument transformers may also be used as an isolation transformer so that secondary quantities may be used in phase shifting without affecting other primary connected devices
Instrument transformers are high accuracy class electrical devices used to isolate or transform voltage or current levels. The most common usage of instrument transformers is to operate instruments or metering from high voltage or high current circuits, safely isolating secondary control circuitry from the high voltages or currents. The primary winding of the transformer is connected to the high voltage or high current circuit, and the meter or relay is connected to the secondary circuit.Instrument transformers may also be used as an isolation transformer so that secondary quantities may be used in phase shifting without affecting other primary connected devices
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TRANSFORMER INSTRUMENT
TRANSFORMER INSTRUMENT
 In power system, the currents and voltages are very large – Therefore, their direct measurements are not possible. • It might appear that the extension of range could be conveniently done by the use of shunts for currents and multiplier for voltage measurement, as in DC. – But this method is suitable only for small values of current and voltage. • Difficult to achieve accuracy with a shunt on AC • Capability of having shunt of large range is not possible • The power consumed by multipliers become large as the voltage increases • The measuring circuit is not isolated electrically from the power circuit • The solution is to step The solution is to step -down these currents/voltages with the down these currents/voltages with the help of Instrument Transformer – So that, they could be metered with instruments of moderate sizes.
  The application of transformer can be seen on power grid where they need to use step-up and step-down transformer to deliver the electric current throughout the city.

TERRY ANAK VINCENT
65246 
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Instrument Transform
 Instrument Transformer
• In power system, the currents and voltages are very large
– Therefore, their direct measurements are not possible.
• It might appear that the extension of range could be conveniently 
done by the use of shunts for currents and multiplier for voltage 
measurement, as in DC.
– But this method is suitable only for small values of current and voltage.
• Difficult to achieve accuracy with a shunt on AC
• Capability of having shunt of large range is not possible
• The power consumed by multipliers become large as the voltage increases
• The measuring circuit is not isolated electrically from the power circuit
• The solution is to step The solution is to step
-down these currents/voltages with the down these currents/voltages with the
help of Instrument Transformer
– So that, they could be metered with instruments of moderate size 
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Transformer Instrument
Transformer Instrument
 
What is Transformer Instrument and the application in real life? 

Instrument transformers is a device used to reduce the current or voltage values into values can be handled by other equipment. It transforms the power system current and voltage to lower magnitude and provide an isolation between the power network and the relay and other instruments connected to the transformer secondary winding.  

There are some industries require specific industrial transformers due to the usage of power (current) as a major resource for production. Electric arc furnaces (EAF), ladle furnaces (LF) and high-current rectifiers need a specific design to supply the necessary power at a low voltage level. 

 Awangku Muhamad Syahiran
(65513)
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Transformer Instruments
Transformer Instruments
 
Electrical instrument transformers transform high currents and voltages to standardized low and easily measurable values that are isolated from the high voltage. When used for metering purposes, instrument transformers provide voltage or current signals that are very accurate representations of the transmission line values in both magnitude and phase. 

Instrument transformers provide either a current or voltage at a usable level to monitor the voltage or current in a given circuit.There are types of transformer that is current transformer and voltage transformer.Current and voltage transformers are also used to provide the energy to operate various protective relays. The degree to which an instrument transformer produces a current or voltage that is proportionate to the one to be monitored is referred to as its accuracy. 

Current transformer are generally used to step down current in a very predictable fashion with respect to current and phase. Voltage transformer are use to reduce high-voltages down to a level that can be safely applied to voltmeters, or to the voltage-coils of wattmeters or energy meters, or to protective relays, while electrically-isolating those instruments from the high voltage supply. 

Application of instrument transformer:
1.  To assess the quality of electricity supply through the power networks.
2.   To safely determine the alternating current through a power conductor. 
3.  Make the ordinary low current instruments suitable for measurement of high current and isolate them from high voltage.

Gildron David (66041)
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TRANSFORMER INSTRUMENTS
TRANSFORMER INSTRUMENTS
Current transformer
 
 A current transformer is a type of instrument transformer that produce an alternating current in its secondary winding that in proportion to the current flowing through the primary winding as a result of a constant potential on the primary. A current transformer also isolates the measuring instruments from high voltage circuits. Generally,this current transformer has a primary winding, a core and a secondary winding. An alternating magnetic field in the core is produced by the alternating current in the primary, which then induces an alternating current in the secondary winding. The primary winding of the transformer is connected in series with the load and carries the actual current flowing to the load, while the secondary winding is connected to a measuring device or a relay. The number of secondary turns is proportional to the current flowing through the primary. For example the larger the magnitude of current flowing through the primary, more the number of secondary turns. There are two type of current transformers; measuring current transformers and protective current transformers In industry, current transformers are used extensively for measuring current and monitoring the operation of the power grid.
 
 Voltage Transformer
 
 Voltage transformers (VT), also called potential transformers (PT), are a parallel connected type of instrument transformer are designed to present negligible load to the supply being measured and have an accurate voltage ratio and phase relationship to enable accurate secondary connected metering. There are three primary types of potential transformers (PT): electromagnetic, capacitor, and optical. The electromagnetic potential transformer is a wire-wound transformer. The capacitor voltage transformer (CVT) uses a capacitance potential divider and is used at higher voltages due to a lower cost than an electromagnetic PT. An optical voltage transformer exploits the Faraday effect, rotating polarized light, in optical materials.
 
 TINA LINDA ANAK ACHILLES 65247

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Transformer Instrument and Application
Transformer Instrument and Application

Nurfarahin Binti Rahman Abdullah (65114)

Instrument transformers are high accuracy class electrical devices used to isolate or transform voltage or current levels. The most common usage of instrument transformers is to operate instruments or metering from high voltage or high current circuits, safely isolating secondary control circuitry from the high voltages or currents. The primary winding of the transformer is connected to the high voltage or high current circuit, and the meter or relay is connected to the secondary circuit.

Current transformers (CT) are a series connected type of instrument transformer. They are designed to present negligible load to the supply being measured and have an accurate current ratio and phase relationship to enable accurate secondary connected metering.

Current transformers are often constructed by passing a single primary turn (either an insulated cable or an uninsulated bus bar) through a well-insulated toroidal core wrapped with many turns of wire. This affords easy implementation on high voltage bushings of grid transformers and other devices by installing the secondary turn core inside high-voltage bushing insulators and using the pass-through conductor as a single turn primary.

Voltage transformers (VT), also called potential transformers (PT), are a parallel connected type of instrument transformer. They are designed to present negligible load to the supply being measured and have an accurate voltage ratio and phase relationship to enable accurate secondary connected metering

Application of Current Transformer:
A current clamp uses a current transformer with a split core that can be easily wrapped around a conductor in a circuit. This is a common method used in portable current measuring instruments but permanent installations use more economical types of current transformer. Specially constructed wideband CTs are also used, usually with an oscilloscope, to measure high frequency waveforms or pulsed currents within pulsed power systems. One type provides an IR voltage output that is proportional to the measured current; another, called a Rogowski coil, requires an external integrator in order to provide a proportional output.

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What is Transformer Instrument and the application in real life?
What is Transformer Instrument and the application in real life?
 
Transformer instrument  is the high accuracy class electrical devices which are used to isolate or transform voltage or current levels. The most common usage of instrument transformers is to operate instruments or metering from high voltage or high current circuits, safely isolating secondary control circuitry from the high voltages or currents. The primary winding of the transformer is connected to the high voltage or high current circuit, and the meter or relay is connected to the secondary circuit.


Instrument transformers may also be used as an isolation transformer
 so that secondary quantities may be used in phase shifting without affecting other primary connected devices.[1] 

65169
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Instrument transform
 Instrument transformers are created to transform voltage or current from high values in the transmission and distribution systems to the low values that can be utilized by low voltage metering device. 
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Transformer Instrument
Transformer Instrument
Nurliza Bt Mahli (68810)
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Hi, share your opinion here!
Hi, share your opinion here!
Hazmi
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# data[].attributes.headline
Transformer instrument and its application.

# data[].attributes.subject
Transformer instrument and its application.

# data[].attributes.body
Transformer instrument are high accuracy class electrical devices used to isolate or transform voltage or current levels. The most common usage of instrument transformers is to operate instruments or metering from high voltage or high current circuits, safely isolating secondary control circuitry from the high voltages or currents. The primary winding of the transformer is connected to the high voltage or high current circuit, and the meter or relay is connected to the secondary circuit. Instrument transformers may also be used as an isolation transformer so that secondary quantities may be used in phase shifting without affecting other primary connected devices.

Types :

Potential Transformer

Potential transformers are extremely accurate and normally the type of these potential transformers is falls under step down transformer category.

All potential transformers are generally falls under the shell-type transformer and it’s not much different from the ordinary two winding transformers which discussed.

Secondary of potential transformers are normally completely instead to protect against the high voltage. Potential transformer is connect to line on way.

High voltage primary of potential transformer also should be grounded for additional protection for the operator of the potential transformer.

Current Transformers

Current transformers are mainly use to measure the huge alternative current in electrical equipments.

In Some high voltage lines where measuring equipments are difficult to connect, these type of current transformers are use with other ammeters to measure the current under alternative current circuits.

To measure the current of high voltage line this current transformer step town the current level in to known ratio.

Normally the current transformer is connected to the line with series connection.

In current transformer the number of turns of coils in secondary is greater primary.

When the primary to secondary current ration of current transformer is 200: 10 then its steps up the voltage 20 times. Clip on type current transformers are the most use current transformers in electrical industry.

Applications :

The transformer used for impedance matching.

The transformer used for isolate two circuits electrically.

It is used to increase or decrease the alternating voltages in electric power applications.

The transformer used in voltmeter, ammeters, protective relay etc.

The transformer used for step up low voltage in case of measurement.

The transformer used for step down high voltage for safety.

The transformer used in rectifier.

It is used in voltage regulators, voltage stabilizers, power supplies

JENNIFER ATI
66258

# data[].attributes.body
A Transformer is a device which transfers electric current from one circuit to another, usually by the principal of mutual induction. During this process, the frequency remains constant whereas the voltage can be increased or decreased according to the need.

This transfer of electricity occurs with the help of two coils. One of which is known as the Primary Coil, which is connected to a source of alternating current. The other is known as the Secondary Coil, and it is connected to an external circuit.
Transformer works on the Principle of Faraday’s Law of Mutual Induction. This principle states that the rate of change of flux is directly proportional to the induced electromagnetic flux.

So in short, this mutual induction between the coils is responsible for transferring the electric energy.

Application.
The transformer used for impedance matching.
The transformer used for isolate two circuits electrically.
It is used to increase or decrease the alternating voltages in electric power applications.
The transformer used in voltmeter, ammeters, protective relay etc.
The transformer used for step up low voltage in case of measurement.
The transformer used for step down high voltage for safety.

Aisyatun Radhiah Binti Mohamad
65359

# data[].attributes.body
Instrument transformers are used to step-down current or voltage to measurable values. They provide standardized, useable levels of current or voltage in a variety of power monitoring and measurement applications.There are two basic types of instrument transformers:

Current transformers: are used to step-down current in a predictable fashion with regard to both current and phase. They are often used as inputs to current-powered instruments.

Voltage transformers: produce a secondary voltage that is substantially proportional to the primary voltage, but that differs in phase by an angle that is approximately zero for an appropriate direction of the connections. Often, voltage transformers are used as potential transformers or in combination with current transformers.

Application.
It step up the level of voltage at generation side before transmission and distribution.
in distribution side, for commercial or domestic use of electricity, transformer step down ( decries) the level of voltage for example form 11kV to 220 V single phase and 440 V three phase.
The Current Transformer and Potential Transformer also used power system and in the industry. Also, it is used for impedance matching.  So these were the simple uses and application of transformer.

Jason Sandra (66233)

# data[].attributes.body
Instrument transformers are high accuracy class electrical devices used to isolate or transform voltage or current levels. The most common usage of instrument transformers is to operate instruments or metering from high voltage or high current circuits, safely isolating secondary control circuitry from the high voltages or currents. The primary winding of the transformer is connected to the high voltage or high current circuit, and the meter or relay is connected to the secondary circuit.

Instrument transformers may also be used as an isolation transformer so that secondary quantities may be used in phase shifting without affecting other primary connected devices.
Next,
Bar Type Current Transformers

A true bar type current transformer is a toroidal type transformer with a bus bar as an integral part of the current transformer which is permanently inserted through the window of the torroid. The bus bar serves as the primary conductor. The bar type is inserted in the circuit to be monitored. It is a common error to refer to a wound primary type as a bar type because the primary connections are made to bus bars. In the wound type the bus bars are a means of connection and are not a continuous bar.
Lastly,
The primary purpose of this guide is to give the reader a basic understanding of how to apply instrument transformers in a practical way while observing good engineering practice. It is not intended to make the reader an instrument transformer designer. A special effort will be made to keep to a minimum technical terms and language.

Nurul Syamimi Hanim binti Noraini
65158

# data[].attributes.headline
Instrument transformers are high accuracy class electrical devices used to isolate or transform voltage or current levels. The most common usage of instrument transformers is to operate instruments or metering from high voltage or high current circuits, safely isolating secondary control circuitry from the high voltages or currents. The primary winding of the transformer is connected to the high voltage or high current circuit, and the meter or relay is connected to the secondary circuit.Instrument transformers may also be used as an isolation transformer so that secondary quantities may be used in phase shifting without affecting other primary connected devices

# data[].attributes.subject
Instrument transformers are high accuracy class electrical devices used to isolate or transform voltage or current levels. The most common usage of instrument transformers is to operate instruments or metering from high voltage or high current circuits, safely isolating secondary control circuitry from the high voltages or currents. The primary winding of the transformer is connected to the high voltage or high current circuit, and the meter or relay is connected to the secondary circuit.Instrument transformers may also be used as an isolation transformer so that secondary quantities may be used in phase shifting without affecting other primary connected devices

# data[].attributes.body
In power system, the currents and voltages are very large – Therefore, their direct measurements are not possible. • It might appear that the extension of range could be conveniently done by the use of shunts for currents and multiplier for voltage measurement, as in DC. – But this method is suitable only for small values of current and voltage. • Difficult to achieve accuracy with a shunt on AC • Capability of having shunt of large range is not possible • The power consumed by multipliers become large as the voltage increases • The measuring circuit is not isolated electrically from the power circuit • The solution is to step The solution is to step -down these currents/voltages with the down these currents/voltages with the help of Instrument Transformer – So that, they could be metered with instruments of moderate sizes.
The application of transformer can be seen on power grid where they need to use step-up and step-down transformer to deliver the electric current throughout the city.

TERRY ANAK VINCENT
65246

# data[].attributes.body
Instrument Transformer
• In power system, the currents and voltages are very large
– Therefore, their direct measurements are not possible.
• It might appear that the extension of range could be conveniently
done by the use of shunts for currents and multiplier for voltage
measurement, as in DC.
– But this method is suitable only for small values of current and voltage.
• Difficult to achieve accuracy with a shunt on AC
• Capability of having shunt of large range is not possible
• The power consumed by multipliers become large as the voltage increases
• The measuring circuit is not isolated electrically from the power circuit
• The solution is to step The solution is to step
-down these currents/voltages with the down these currents/voltages with the
help of Instrument Transformer
– So that, they could be metered with instruments of moderate size

# data[].attributes.body
What is Transformer Instrument and the application in real life?

Instrument transformers is a device used to reduce the current or voltage values into values can be handled by other equipment. It transforms the power system current and voltage to lower magnitude and provide an isolation between the power network and the relay and other instruments connected to the transformer secondary winding.

There are some industries require specific industrial transformers due to the usage of power (current) as a major resource for production. Electric arc furnaces (EAF), ladle furnaces (LF) and high-current rectifiers need a specific design to supply the necessary power at a low voltage level.

Awangku Muhamad Syahiran
(65513)

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Electrical instrument transformers transform high currents and voltages to standardized low and easily measurable values that are isolated from the high voltage. When used for metering purposes, instrument transformers provide voltage or current signals that are very accurate representations of the transmission line values in both magnitude and phase.

Instrument transformers provide either a current or voltage at a usable level to monitor the voltage or current in a given circuit.There are types of transformer that is current transformer and voltage transformer.Current and voltage transformers are also used to provide the energy to operate various protective relays. The degree to which an instrument transformer produces a current or voltage that is proportionate to the one to be monitored is referred to as its accuracy.

Current transformer are generally used to step down current in a very predictable fashion with respect to current and phase. Voltage transformer are use to reduce high-voltages down to a level that can be safely applied to voltmeters, or to the voltage-coils of wattmeters or energy meters, or to protective relays, while electrically-isolating those instruments from the high voltage supply.

Application of instrument transformer:
1.  To assess the quality of electricity supply through the power networks.
2.   To safely determine the alternating current through a power conductor.
3.  Make the ordinary low current instruments suitable for measurement of high current and isolate them from high voltage.

Gildron David (66041)

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Current transformer

A current transformer is a type of instrument transformer that produce an alternating current in its secondary winding that in proportion to the current flowing through the primary winding as a result of a constant potential on the primary. A current transformer also isolates the measuring instruments from high voltage circuits. Generally,this current transformer has a primary winding, a core and a secondary winding. An alternating magnetic field in the core is produced by the alternating current in the primary, which then induces an alternating current in the secondary winding. The primary winding of the transformer is connected in series with the load and carries the actual current flowing to the load, while the secondary winding is connected to a measuring device or a relay. The number of secondary turns is proportional to the current flowing through the primary. For example the larger the magnitude of current flowing through the primary, more the number of secondary turns. There are two type of current transformers; measuring current transformers and protective current transformers In industry, current transformers are used extensively for measuring current and monitoring the operation of the power grid.

Voltage Transformer

Voltage transformers (VT), also called potential transformers (PT), are a parallel connected type of instrument transformer are designed to present negligible load to the supply being measured and have an accurate voltage ratio and phase relationship to enable accurate secondary connected metering. There are three primary types of potential transformers (PT): electromagnetic, capacitor, and optical. The electromagnetic potential transformer is a wire-wound transformer. The capacitor voltage transformer (CVT) uses a capacitance potential divider and is used at higher voltages due to a lower cost than an electromagnetic PT. An optical voltage transformer exploits the Faraday effect, rotating polarized light, in optical materials.

TINA LINDA ANAK ACHILLES 65247

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Nurfarahin Binti Rahman Abdullah (65114)

Instrument transformers are high accuracy class electrical devices used to isolate or transform voltage or current levels. The most common usage of instrument transformers is to operate instruments or metering from high voltage or high current circuits, safely isolating secondary control circuitry from the high voltages or currents. The primary winding of the transformer is connected to the high voltage or high current circuit, and the meter or relay is connected to the secondary circuit.

Current transformers (CT) are a series connected type of instrument transformer. They are designed to present negligible load to the supply being measured and have an accurate current ratio and phase relationship to enable accurate secondary connected metering.

Current transformers are often constructed by passing a single primary turn (either an insulated cable or an uninsulated bus bar) through a well-insulated toroidal core wrapped with many turns of wire. This affords easy implementation on high voltage bushings of grid transformers and other devices by installing the secondary turn core inside high-voltage bushing insulators and using the pass-through conductor as a single turn primary.

Voltage transformers (VT), also called potential transformers (PT), are a parallel connected type of instrument transformer. They are designed to present negligible load to the supply being measured and have an accurate voltage ratio and phase relationship to enable accurate secondary connected metering

Application of Current Transformer:
A current clamp uses a current transformer with a split core that can be easily wrapped around a conductor in a circuit. This is a common method used in portable current measuring instruments but permanent installations use more economical types of current transformer. Specially constructed wideband CTs are also used, usually with an oscilloscope, to measure high frequency waveforms or pulsed currents within pulsed power systems. One type provides an IR voltage output that is proportional to the measured current; another, called a Rogowski coil, requires an external integrator in order to provide a proportional output.

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What is Transformer Instrument and the application in real life?

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What is Transformer Instrument and the application in real life?

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Transformer instrument  is the high accuracy class electrical devices which are used to isolate or transform voltage or current levels. The most common usage of instrument transformers is to operate instruments or metering from high voltage or high current circuits, safely isolating secondary control circuitry from the high voltages or currents. The primary winding of the transformer is connected to the high voltage or high current circuit, and the meter or relay is connected to the secondary circuit.

Instrument transformers may also be used as an isolation transformer
so that secondary quantities may be used in phase shifting without affecting other primary connected devices.[1]

65169

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Instrument transformers are created to transform voltage or current from high values in the transmission and distribution systems to the low values that can be utilized by low voltage metering device. There are two type of instruments transformer which are current transformer and voltage transformer.
There are some application of instrument transformer in daily life which are:
1. Regulating alternating current
All transformers have one basic function: increasing or decreasing alternating current within the electrical system. By regulating the flow of current, the transformer allows for increased energy efficiency, which regulates and ultimately lowers electricity bills.

2. Stopping and starting the flow of electricity
Transformers are also useful in stopping the flow of electricity and interrupting an electric current. Transformers are commonly present in circuit breakers, where they utilize a switch to automatically interrupt the flow of electricity and to prevent damage that can occur as a result of high voltage.

3. Battery charging
The concept of battery charging is fuelled by the functioning of generators. Transformers are used to control the voltage that enters the battery during the charging process in order to prevent any damages that can occur to the internal battery components. This is important because an unregulated voltage can result in high surges during charging of batteries.

4. Steel manufacturing
Steel manufacturing plants rely on the functioning of high voltage transformers to provide a range of voltages for the manufacturing process. High currents are required during melting and welding of steel, and lower current are required during the cooling process. In order to provide this range of voltages, transformers are necessary for regulating currents within the system.

5. Electrochemicals
In chemical engineering and manufacturing processes, electrolysis is normally fuelled by the functioning of transformers. Metals such as copper, zinc, and aluminum are normally used for the purposes of electroplating. During the process, transformers provide a regulated electrical current that is used to drive the chemical reaction from the beginning stages until completion. The current can be therefore be regulated as the reaction proceeds.

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Nurliza Bt Mahli (68810)

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Hazmi