Types of Current Transformers

Following are the Types of Current Transformers

  • Indoor Current Transformers
  • Outdoor Current Transformers
  • Bushing Current Transformers
  • Portable Current Transformers

Indoor Current Transformers

Current Transformers Which Designed For Indoor Environments are Known as Indoor current Transformers. They Have Very Compact Size which can used by Indoor Equipments for Medium to low Voltage Utilization. Indoor Current Transformers Have good Insulation with high Accuracy which makes theme Suitable for Indoor Environments.

Examples of Current Transformers are:

  • Bar-Type CT: CT which has  rectangular or circular type primary winding instead of traditional coil or winding.
  • Ring Type: These are CT where slot or space is left in the centre to accommodate the primary conductor.
  • Wound Type CT: In this CT the primary winding has multiple turns.

Outdoor Current Transformers

Outdoor current transformers are those that are specifically made to endure weather-related conditions and are engineered to survive elements like rain and UV radiation. They are commonly utilized for medium to high outdoor equipment. Outdoor current transformers provide accurate measurements even in challenging outdoor conditions.

Examples are:

  • Mining CTs: These Types of CTs are specially designed for the mining areas.
  • Railway Electrification CTs: They are designed for outdoor railway electrification systems.
  • Switchyard CTs: These CTs are used in Switchyard for current measuring and monitoring purposes.


Bushing Current Transformer

Current Transformers which are desgined in form of bushing are known as Busing Current Transformers.They are Mounted on the buishing of the Equipment which make them compact and integral part of the overall system.They are used for relaying and measuring existing power transformers or circuit breakers.

Portable Current Transformers

As the name Suggest these types of Current Transformers are designed to be easily movable and are mostly used for temporary electrical measurments and Testing. They are Very much Flexible and used where Permanent Transformers Canoot be Installed.

Current Transformers

In this article, we will discuss what is A current Transformer?, Construction of the Current Transformer, Its Working, Phasor Diagram, Errors in the current Transformer, and Its Types, and At last we will conclude this article With its advantages, disadvantages, Application, and FAQs.

Table of Content

  • What is a Current Transformer?
  • Construction of the Current Transformer
  • Working of Current Transformer
  • Phasor Diagram of Current Transformer
  • Current Transformer Errors
  • Reduction of Errors in Current Transformer
  • Types of Current Transformers

Similar Reads

What is a Current Transformer?

To measure high AC current, using an ammeter directly is impractical and potentially hazardous due to the elevated currents involved. Instead of employing an ammeter directly, a current transformer is utilized. A current transformer falls under the category of Instrument Transformers. With the assistance of a current transformer, the measurement of high AC current becomes feasible and safe. The primary function of a current transformer is to step down the high AC current, enabling its safe transmission to measuring instruments, relays, or other monitoring devices. It operates on the same principle as a normal transformer, a concept that will be further discussed in the working part....

Construction of the Current Transformer

Current Trasnformer...

Working of Current Transformer

The operation of a current transformer follows the same basic principle as that of a conventional transformer. The primary current is drawn from the primary winding, and through electromagnetic induction, it undergoes a step-down transformation. The resulting output is then obtained from the secondary winding....

Phasor Diagram of Current Transformer

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Current Transformer Errors

In CT there are two types of errors...

Reduction of Errors in Current Transformer

The the Errors in the CT can be reduced as:...

Types of Current Transformers

Following are the Types of Current Transformers...

Advantages and Disadvantages of Current Transformers

Given below are the list of Advantages and Disadvantages of Current Transformers :...

Application of Current Transformers

The CTs can be used to measure High currents.Current transformers (CTs) are used to measure electrical current and, together with other relays or devices, play a key role in detecting, asserting and monitoring the electrical system.CTs are used in in HVAC Systems to Monitor and Control Electrical Currents in motors and other Components.CTs can be Integrated with Renewable Energy Systems to measure Current generated by the Renewable Sources.CTs can be used with Industrial Automation Systems for Monitoring and Controlling Electrical Currents in Various Equipments and Machinery....

Conclusion

In conclusion, Current Transformers (CTs) play a crucial role in measuring high AC currents, providing a safe and efficient means of obtaining accurate readings. By utilizing the principles of electromagnetic induction, CTs step down high currents, allowing for safe transmission to measuring instruments, relays, or monitoring devices. While current transformers are essential for precise current measurement, careful consideration of their limitations and proper maintenance practices is necessary to ensure reliable and accurate performance in various applications....

FAQs on Current Transformers

1. What are the different Errors in CTs?...