零相変流器の構造について説明します。零相変流器は通常の変流器とほとんど変わりません。使い方が違います。まず下の絵をご覧下さい。

Don't forget, the secondary winding is linked to the earth fault relay, it's going to secure the rest of the circuit with an extra good day from a circuit breaker.

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This performance is vital for correct current measurement and method safety, ensuring that monitoring devices and protective relays operate properly with no currently being exposed to higher present ranges.

電流には必ず行きと帰りがあり、通常その電流の大きさは同じになります。しかし地絡が発生すると、電流が正常な回路を通らずに大地を通って帰っていきます。これを漏電とも表します。

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Nominal CT ratio: This could be such that even in smallest ground fault The existing ought to be enough to work earth fault relay.

Symmetrical Core Layout: HY-ZCT ordinarily make use of a symmetrical Main design to guarantee equivalent magnetic coupling for all a few phases. This design cuts down the error because of magnetic unbalance and improves the accuracy of zero sequence present-day measurement.

To locate the direct resistance Rleads (two prospects – provide, return) we can easily use the regular formulae for resistivity:

Frequency reaction: ZCT more info is intended to operate about a wide array of frequencies, typically from 50Hz to 400Hz, that makes them appropriate for use in a variety of programs.

Nonetheless, each time a ground fault happens, this harmony is disrupted. The fault generates a magnetic flux in the ring Main from the ZSCT, inducing a voltage to the secondary side that activates the protection relay.

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