３相分の電流を一括して変流器に通すと、３相分の電流をベクトル合成した電流が２次側に流れます。ベクトル合成された電流はどうなるのでしょうか？実は対称３相交流３相分の電流を合成させると”０”になるのです。対称３相交流は、各相とも同じ大きさでそれぞれが１２０°ずつ位相がずれているのでこのようになります。
Using this method, we will not uncover any remainder of zero sequence present-day within the CBCT Key winding. As it is really a balanced 3 section, there won't be any flux created in the CBCT core. Hence, The present during the secondary winding is zero.
Subsequently, the CBCT’s secondary-connected earth fault relay will turn into activated, isolating the health technique which has a circuit breaker.
From its function, you might be able to figure out how CBCT or ZCT will work. The CBCT or ZCT operates by balancing zero sequence latest in any 3 phase system. This is the most important basic principle we want to keep in mind just before jumping to the subsequent rationalization.
工具 たくさんあるビットを保管・携帯しよう！ビットホルダーのおすすめ！
地絡時には零相変流器が作動することにより、故障個所を周囲の電気回路からただちに切り離されます。
네이버 아이디 또는 개인정보가 포함된 문자 사용은 피해주세요. 블로그 도움말에서 아이디 변경 유의사항을 확인해보세요. 나중에 할게요
In functional terms, Which means each time a technique is working Typically without having faults, the vector sum in the currents in all phases also needs to be zero, causing no output with the ZSCT.
จำหน่ายอุปกรณ์ไฟฟ้าแรงต่ำ-แรงสูงทุกชนิด อุปกรณ์ไฟฟ้าบ้าน อาคาร โรงงาน
Numerous methods exist to dimension existing transformers. This Be aware will examine several techniques, with specific consideration staying paid to protection class CTs sized in IEC 60044, and that is adopted internationally.
Ground Fault Detection: One of many principal applications with the HY-ZCT is floor fault detection. By measuring zero sequence current, these transformers can establish the presence of floor faults, which come about when latest flows from a section conductor to floor.
Significant sensitivity: ZCT is very delicate and may detect even little amounts of floor fault latest. This will help to avoid damage to gear and reduce the potential risk of electric powered shock to staff.
Epoxy resin casting encapsulation, potent insulation and isolation functionality, dampness evidence and seismic resistance;
Some ideas regarding how to use hysteresis loop traits within the manufacture of latest transformers Some strategies regarding how to use hysteresis loop properties within the manufacture of latest transformers A latest transformer (CT) is undoubtedly an electrical machine accustomed to evaluate or check alternating present (AC) in a power procedure. Its functioning theory relies go here on the usage of the hysteresis traits of magnetic elements