Details, Fiction and zct
Details, Fiction and zct
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racobb (Electrical) eleven Nov 09 21:twelve I believe your being familiar with is Completely wrong. A CT just measures existing and it truly is your decision to find out exactly what the CT is measuring and sort of relay you attach it to and how you set the relay. Direction is a specific type of relay, not a CT function or CT style/connection.
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最後にここまでのおさらいとしてもう一度変流器と零相変流器の違いを示します。
From its perform, you could possibly find out how CBCT or ZCT is effective. The CBCT or ZCT operates by balancing zero sequence recent in almost any three stage system. This is actually the major principle we need to remember before jumping to the subsequent clarification.
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。
These zero-section molded current transformers protect the power program in opposition to leakage and earth faults. Every single of such existing transformers has an insulation degree of 0.72 kV and requires a suitably insulated Most important conductor.
Present transformers are intended to change significant Key currents into workable secondary currents via a specified transformation ratio. For instance, a CT by using a four hundred/5 ratio can remodel an true latest of 400A right down to 5A.
We'll generally use this kind of recent transformer being an earth fault defense for medium degree voltage distribution. The widespread CBCT illustration is often noticed beneath.
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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...
For a much better comprehension, We are going to try and place almost everything We now have read through previously mentioned into a mathematical theory.
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Zero sequence present transformers run on the rules outlined by Kirchhoff’s Current Legislation, which states the algebraic sum of the currents getting into a node ought to equal zero below usual circumstances.
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。