The zct Diaries
The zct Diaries
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There is a slight complication in the suppliers know their relays a lot better than we (or the IEC) do. As typical assistance, you ought to usually refer to the suppliers info:
is pretty simple to be aware of and relates to the liner portion of a CT attribute. The voltage and present across a CT are linear only up until a particular value (normally specified to be a various with the nominal ranking), after which the CT will saturate plus the curve will degree off.
글보내기 기능을 제한합니다. 네이버는 블로그를 통해 저작물이 무단으로 공유되는 것을 막기 위해, 저작권을 침해하는 컨텐츠가 포함되어 있는 게시물의 경우 글보내기 기능을 제한하고 있습니다.
Detection of unbalanced present: ZCT is built to measure the unbalanced recent in A 3-phase electrical process, that is the sum with the three stage currents.
Usually Once i Possess a separate neutral CT I use a committed relay with the enter. Some relays have what known as a "sensitive earth" input. Dedpends on the application. In both scenario, you need to make your mind up what you might have and how to established the relay.
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、
The resultant flux is zero (Φr = 0). What this means is there is no recent flowing with the secondary circuit of our CBCT. Its earth fault relay gained’t get operated due to the fact this is the regular operation.
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。
This permits them to detect floor faults, which may arise every time a click here fault present-day flows from a number of from the stage conductors to ground.
零相変流器の関連カテゴリ 覗き見防止フィルム フルボディハーネス ラプチャーディスク 電力調整器 セーフティライトカーテン スイッチガード 電力監視 トルクキーパー 使い捨て白衣 安全ミラー 電圧継電器 危険物倉庫 リセッタブルヒューズ 漏電火災警報器 自給式呼吸器 温度監視システム カテゴリグループから探す
It saied at the time, but I ask once more, are you presently Test that grounding concentrator of cable again to grounding via ZCT?
The earthing qualified prospects through the cable sheath to earth and need to be taken from the eye with the ZCT Main. A normal diagram is as demonstrated from the underneath determine.
문화를 만들기 위한 네이버의 노력이오니 회원님의 양해와 협조 부탁드립니다.
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。