Whilst in irregular situations, the sum of period present-day won't be zero. Then because of the unbalancing of section present-day, a zero sequence recent will stream from the secondary circuit of CBCT.
Don't forget, the secondary winding is linked to the earth fault relay, it'll defend the rest of the circuit with an extra howdy from the circuit breaker.
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。
テキストはクリエイティブ・コモンズ 表示-継承ライセンスのもとで利用できます。追加の条件が適用される場合があります。詳細については利用規約を参照してください。
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Due to the fact each individual stage current provides its own magnetic flux in exactly the same core, the regular k is the same for everyone.
The way floor fault is detected is via 50G (Pickup=2A, TD=all over 2sec) as well as by using the 59G and 67G, on the other hand the designer explains the 59G/67G, is just for backup protection. The key protection really should nevertheless be 50G, which someway produced various GF when stage B was faulted (as demonstrated within the relay log), for which the sytsme was registering mutilple floor faults "mysteriously" elsewhere downstream on the tie breaker (diagram). But before I digressing into distinctive topics, here I desire to point out based upon the system I have explained to date, are we utilizing the suitable CT for this apps? Many thanks.
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丸窓型・トラック型・分割型など、長い歴史で培われた生産技術で、規格外品であっても様々なご提案をさせていただきます。
・毎年数億円を超える設備投資案件の設計から施工管理、設備の立上げまでを担当
スーパーキャパシタ 小型、大容量を実現した電気二重層キャパシタ。環境に優しい、簡易バックアップ電源としてＯＡ、ＡＶ機器の他、通信関連機器にも利用されています。
三相交流電源では、それぞれに流れる電流が等しく対称である場合、そのベクトルの和はゼロです。
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Also, The volume of secondary turns of CT is just not necessary according to the rated latest on the cable due to the fact no secondary existing flows in regular operating ailments since the three period program currents are balanced.