While in abnormal conditions, the sum of phase current will not be zero. Then as a result of unbalancing of stage present-day, a zero sequence latest will move during the secondary circuit of CBCT.
Relay defense coordination: HY-ZCT plays an important function in relay defense coordination. By accurately measuring the residual latest below fault ailments, they provide input to protecting relays to initiate suitable protecting motion.
In contrast, the total stage present-day will not be zero under abnormal situation. A zero sequence current will then stream during the CBCT secondary circuit because the period latest is away from harmony.
From its operate, you could possibly figure out how CBCT or ZCT operates. The CBCT or ZCT will work by balancing zero sequence current this website in any 3 period system. This is actually the key basic principle we need to recollect ahead of leaping to another explanation.
รับประกอบตู้ไฟฟ้า – ตู้ควบคุมทุกชนิด
かご型誘導電動機の始動方法(全電圧･ｽﾀｰﾃﾞﾙﾀ･ﾘｱｸﾄﾙ･ｺﾝﾄﾞﾙﾌｧ始動法)
変流器は、高圧や特別高圧の回路で大電流が主回路に流れる時、その電流を扱いやすい大きさに変換する機械です。この変流器は多くの箇所で様々な用途で使われています。目的によって選定する機器は変わりますし、使い方によって結線が変わります。ここでは、そ...
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したがって、通常状態（事故が生じていない）では変流器の２次側には電流は流れていません。電流の不平衡があっても、地絡事故が起きていない限りベクトル合成すると打ち消している状態になりますので、ＺＣＴ２次には電流は流れません。
ただし通常の変流器は貫通する導体は１本ですが、零相変流器の場合は３相分の３本となります。
The principal function of ZSCTs is to reinforce program security by detecting faults, significantly floor faults and leakage currents. When this kind of faults happen, the ZSCT activates, removing the power provide to circumvent electrical shock dangers and products damage.
The earthing qualified prospects with the cable sheath to earth and must be taken through the eye from the ZCT core. A typical diagram is as shown in the down below determine.
高卒で電験１種に奇跡の合格ができた管理人が電気系資格の情報や突破対策を発信。
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