Kirchhoff’s existing regulation states that the total latest at each individual node of an electrical circuit will equivalent zero is the elemental tenet governing how zero sequence recent transformers function.
The influence of ( Īsheath + Īearth ) is canceled when the earthing sales opportunities are taken from the eye of CBCT. Hence the security scheme responds only to (Īa + Īb + Īc) present within the induction motor.
工具 たくさんあるビットを保管・携帯しよう！ビットホルダーのおすすめ！
Property / Case Studies / The difference between existing transformer and zero sequence existing transformer The difference between present-day transformer and zero sequence recent transformer
The key advantage of using CBCT being an earth fault protection scheme is Within this safety scheme, only one CT core is used instead of 3 cores as in a traditional technique.
これを防ぐために零相変流器は使用されており、地絡電流を検出した場合に地絡箇所をただちに周囲から切り離すという機能を持っています。
We're going to predominantly use zct this sort of recent transformer as an earth fault security for medium stage voltage distribution. The widespread CBCT illustration could be noticed below.
In contrast to The everyday existing transformer, the CBCT receives its primary winding within the 3 section wires passing throughout the ring at its Centre on the iron core. Its secondary winding is wound on the ring shaped iron core and linked to the earth fault relay.
This permits the secondary turns to generally be optimized in accordance Using the CT’s true Key pickup current.
Net resultant flux (Φr = 0) is zero. It means no current will flow within the secondary circuit of CBCT. Consequently earth fault relay is not going to function in regular wholesome conditions.
Additionally, since the three period procedure latest is balanced, the amount of secondary turns of CT will not be needed to supply the cable’s rated existing since no secondary present flows underneath regular running ailments.
ケーブルの途中で地絡したと仮定すると、地絡電流はシールドを通して接地点へ流れます。
ワニス乾式 及び エポキシモールド 零相変流器 注目製品 ヒラヰ電計機株式会社 ワニス乾式 及び エポキシモールド 零相変流器 です。
私が間違ってる可能性もありますが、一度確認されたほうがよいと思います。