The Ultimate Guide To zct

The Ultimate Guide To zct

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Unlike The existing transformer (CT), the key winding of CBCT is formed with a few Main cables passing throughout the center of its iron Main plus the secondary coil of CBCT is likewise wounded on its ring-form iron Main, and it can be connected with earth-fault relay.

これらの理由より、基本は片端接地が採用されます。両端接地を採用する場合は、慎重に検討する必要があります。

I recognized With this publish that a metering class can not be applied for defense. What troubles could perhaps either way Should the CT's are replaced in applications.  

 Core balance CT is generally used for earth fault security (or earth leakage security) for medium voltage electrical systems. A typical more info CBCT is as shown within the beneath figure.

"Protection" CT's are manufactured in an effort to maintain precision at present-day amounts considerably in excess of their nominal values, ordinarily twenty occasions nominal, so that you can insure suitable illustration of currents below fault ailments.

This ring sort existing transformer has the capacity to stability the zero sequence current from the three section program. This is when it got its title being a Zero Sequence Present Transformer (ZCT).

両端接地を採用するポイントは、シールドに発生する誘起電圧の大きさです。

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。

継電器（リレー）や遮断器とともに漏電遮断器に内蔵されることが多く、事故や火災などの災害につながる漏電を防ぐ上で重要な役割を担っています。 参考文献

他にも迷走電流や循環電流、雷サージ電圧の観点からも検討が必要になるので、非常に難しい判断になります。

racobb (Electrical) 11 Nov 09 21:12 I feel your being familiar with is Mistaken.  A CT just measures existing and it is actually up to you to determine just what the CT is measuring and type of relay you attach it to and how you set the relay.  Path is a particular sort of relay, not a CT operate or CT layout/link.

高圧ケーブルの片側のみを接地します。もう片側は接地されない様に、絶縁テープなどで絶縁しておく必要があります。

サブ変電所で地絡保護をする場合で、シールドの接地がメイン受電所の場合。

一般的な変流器と同様に、円環状の鉄心にコイルを巻き付けた構造を持ち、円環の中央に導体が貫通しています。