New Step by Step Map For zct
New Step by Step Map For zct
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How ground fault is detected is via 50G (Pickup=2A, TD=all around 2sec) as well as via the 59G and 67G, nonetheless the designer clarifies the 59G/67G, is just for backup safety. The main security need to continue to be 50G, which by some means produced several GF when section B was faulted (as proven while in the relay log), for which the sytsme was registering mutilple ground faults "mysteriously" elsewhere downstream in the tie breaker (diagram). But prior to I digressing into distinctive topics, I desire to point out based upon the procedure I have explained to date, are we utilizing the right CT for this programs? Thanks.
As a result, the magnetic flux necessary to provide a particular secondary present is decreased to at least one-third (1/three), that is the highest advantage offered the improved Over-all sensitivity on the protecting system.
この場合はサブ変電所の地絡保護がしたいので、高圧ケーブルの保護は必要ありません。なのでシールドの接地線の処置は必要ありません。
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。
This ring type latest transformer has the capacity to harmony the zero sequence current while in the a few phase system. This is where it obtained its identify as a Zero Sequence Present Transformer (ZCT).
新エネルギー発電の知識 新エネルギーとして代表的な太陽光発電、風力発電、燃料電池や、排熱再利用など。
これはケーブルのサイズ(誘導リアクタンスの関係)及び通電電流が関係してきます。
By thinking of elements for example waveform distortion, measurement zct vary, and budget, you can make an informed selection about the appropriate present
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This way, we won't obtain any remainder of zero sequence latest from the CBCT Principal winding. As it is often a balanced three section, there will not be any flux generated during the CBCT Main. Hence, the current in the secondary winding is zero.
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