There is a slight complication from the companies know their relays better than we (or maybe the IEC) do. As standard advice, it is best to often refer to the makers information:
In contrast into a existing transformer (CT), a CBCT’s Most important winding is product of A 3-Main cable that runs throughout the center of its iron Main, and its secondary coil is wrapped on a ring-shaped iron Main that is linked to an earth fault relay.
一覧ページ フェライトタイル トーキンのフェライトタイルは、最新で独自のフェライト材料技術を用いて設計されており、最高の給電効率をご提供します。
네이버는 블로그를 통해 저작물이 무단으로 공유되는 것을 막기 위해, 저작권을 침해하는 컨텐츠가 포함되어 있는 게시물의 경우 주제 분류 기능을 제한하고 있습니다.
零相変流器の２次側に保護継電器を設置しておき、電流が流れたら遮断器を開放するようにしておけば地絡事故発生した場合に迅速に故障箇所を電気回路から切り離すことができます。これが零相変流器の設置目的と使用法です。
絵を見ると地絡した相であるT相には地絡電流が流れていないように見えますが、
Furthermore, as the three section method existing is well balanced, the quantity of secondary turns of CT just isn't required to produce the cable’s rated recent since no secondary latest flows underneath typical functioning disorders.
ご覧のとおり、決定的な違いは変流器に通す主回路の電線です。通常の変流器であれば１つの変流器に１相分の電線を通し１相分の電流を変流器２次側へ取り出します。
Nominal CT ratio: This could be this kind of that even in smallest go here ground fault The present must be enough to operate earth fault relay.
I recognized In this particular publish that a metering course can't be employed for cover. What troubles could quite possibly In either case When the CT's are changed in applications.
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次回のコメントで使用するためブラウザーに自分の名前、メールアドレス、サイトを保存する。
In the event the leakage present-day at the CT Principal reaches a specific stage, the CT secondary delivers the mandatory latest sign or voltage sign – based on the style of protecting relay in use – to the defense of the ability technique. EZ Collection
Compared with the current transformer (CT), the principal winding of CBCT is fashioned with three Main cables passing in the Heart of its iron Main and also the secondary coil of CBCT is usually wounded on its ring-sort iron Main, and it is linked with earth-fault relay.