The role of protective current transformers

Let's first understand the current transformer for protection. Literally, this current transformer is mainly used for protection. The protection current transformer is a type of current transformer developed for the protection system to detect faults, and it is one of the important components of the protection system.

The protective current transformer is usually cooperated with the relay device. Once the power line is severely overloaded, short-circuited and other abnormal conditions, the protective circuit transformer will play a role, and provide a signal to the relay device in a very short time to cut off the circuit, thereby Ensure the safety of power lines and electrical equipment.

We can see that the role of the protective current transformer is very important in the system. Due to the high temperature and electromagnetic force generated by the inrush current when the line fails, the above problems are fully considered in the design, resulting in the protective current transformer having Good thermal and dynamic stability. Coupled with the particularity of the application, the insulation performance of the protective current transformer is better than that of other types of current transformers, and it has a large enough accurate limit coefficient.