Three Phase Current Transformer for Motor Protection

A three-phase current transformer (CT) is an instrument designed to measure and monitor current in three-phase electrical systems.

Working Principle:
The three-phase current transformer operates based on electromagnetic induction. Each phase contains a primary winding (the conductor carrying the main current) and a secondary winding wound on a magnetic core. The alternating current in the primary winding induces a proportional current in the secondary winding, which is then used by meters or relays for measurement and protection, while maintaining electrical isolation from the high-voltage circuit.

Features:

• High measurement accuracy and stable performance

• Electrical isolation between high and low voltage circuits

• Compact structure and easy installation

• Suitable for metering and protective relays

• Wide current and voltage range options

Applications:
Three-phase current transformers are widely used in power distribution systems, industrial control panels, energy management systems, and smart grids. They play a key role in monitoring load currents, detecting faults, improving energy efficiency, and ensuring safety in both commercial and industrial power networks.

Advantages

*    Wide overload and excellent consistent ;

*    Different input current can be converted into a unified standard value ,which is convenient for signal acquisition;

*    Various installation methods, optional PCB installation and bolt fixing methods.

*    Various shape structures are available .

 

Specification

Typical Value of Products