Capacitive voltage transformer (CVT) is a type of voltage transformer that is divided by series capacitors, then reduced and isolated by electromagnetic transformers. It serves as a meter, relay protection, etc. The CVT can also couple the carrier frequency to transmission lines for long-distance communication, remote measurement, selective line high-frequency protection, remote control, teletyping, etc. Therefore, compared to conventional electromagnetic voltage transformers, capacitive voltage transformers not only prevent ferroresonance caused by saturation of the voltage transformer core, but also have many advantages in economy and safety
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