Also increasingly electronic voltage transformer replacement in

In the power system , voltage transformer can play a role in protecting the power grid . With the sensor technology, intelligent technology and grid technology continues to evolve ,  Circuit breaker  advanced voltage transformers , voltage sensors began to digital signals, network transmission , and linear measurement direction of rapid development , in order to ensure the power grid to meet the increasingly developed requirements. In recent years, electronic voltage transformers , the abbreviation is EVT, in the power system has been widely studied , electronic  mcb circuit breaker  used in technology, including computer technology, optical technology and communication technology. In addition, with the continuous development of science and technology level , electronic voltage transformer also increasingly replacement , at present , there is a new type of high-voltage electronic voltage transformer has been around and has been used , this article  air circuit breaker  high-voltage electronic voltage transformer the sensing principle and structure . New high-voltage electronic voltage transformer of this new medium and high voltage electronic voltage transformer is based on the coupling capacitor EVT. Compared with conventional voltage transformer , this transformer has a high safety performance , relatively low cost , insulation performance, error is small , the control room environment is good and relatively simple to operate and so on. New high pressure EVT key structure, including: high-precision micro current transformer , coupling capacitors, and power amplifier .