三相交流電源のそれぞれの相に流れる電流のベクトルの和は通常は対称であるためゼロとなりますが、地絡電流が流れた場合にはそのバランスが乱れてゼロ以外の値を持ちます。
In distinction to some present transformer (CT), a CBCT’s primary winding is product of A 3-core cable that runs through the Centre of its iron core, and its secondary coil is wrapped on a hoop-formed iron core that is definitely connected to an earth fault relay.
零相変流器の二次側に電流が流れる時は、３相の電流のバランスが崩れて、打ち消すことができない時となります。なぜバランスがくずれるのでしょうか。それは、電気回路に１線地絡事故（３相の電線のうち１本の電線から電気が大地に流れた状態）が発生したときということになります。
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IEC 60044 specifies the necessities for cover CTs (Along with measuring CT's, VTs and electronic sensors). The real key to CT dimensioning underneath the regular, is definitely the symmetrical short circuit recent and transient dimensioning factors:
Therefore earth fault relay connected While using the secondary CBCT will get energized and it isolates the nutritious technique with the assistance of a circuit breaker.
The ZCT is dealt with like any other CT: ratio, polarity, precision course (saturation). The sole thing to consider that is commonly different could be the Bodily dimension with the window due to the fact you're going to run all three section cables by that window.
専門用語の解説 再生可能エネルギーとは？わかりやすく解説 再生可能エネルギーとは、自然界に存在する無限に再生可能な資源を利用して発電する方法です。太陽光、風力、水力、地熱、バイオマスなどの自然現象や物質を活用し、エネルギーを産出します。化石燃料とは異なり、枯渇することがなく、環境にやさしいのが特徴です。このため、持続可能なエネルギー源として世界中で注目を集めています。
The stage present-day from among 3 cables can have an unbalanced benefit. So the zero sequence current will come about within the secondary winding and circuit of CBCT.
ところが零相変流器では３相分（交流は通常３相交流で送電されています）の電線を一括して変流器に通しています。このように変流器に電線を通すと２次側にはどのような電流が流れるのでしょうか。
The key purpose of ZSCTs is to improve process security by detecting faults, significantly ground faults and leakage currents. When such faults happen, the ZSCT activates, cutting off the ability source to forestall electrical shock dangers and equipment destruction.
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문화를 만들기 위한 네이버의 노력이오니 회원님의 양해와 협조 부탁드립니다.
The vector sum of a three-stage program’s period latest (Ia + Ib + Ic = 0) is zero all through regular operation. Therefore, the primary winding from the CBCT won't incorporate any leftover zero sequence existing.