2nd, check if capacitive existing of cable is a lot less than your environment. 2A looks is low setting, for cable size, from 120mm^2 is fewer than 1km lenght.
下図は「非接地系統（＝６ｋＶ系統）」で地絡事故が生じたときの電流の分布です。
In contrast, the whole stage present-day will not be zero underneath abnormal conditions. A zero sequence present-day will then move in the CBCT secondary circuit as the period existing is from harmony.
テキストはクリエイティブ・コモンズ 表示-継承ライセンスのもとで利用できます。追加の条件が適用される場合があります。詳細については利用規約を参照してください。
Electrical Engineering What are the best approaches for cutting down sounds in a power offer?
회로를 통하지 않고 대지를 통해서 돌아갑니다. 이것을 누전 이라고도 합니다.
Just how floor fault is detected is by using 50G (Pickup=2A, TD=all over 2sec) and in addition via the 59G and 67G, even so the designer explains the 59G/67G, is only for backup safety. The first safety should really continue to be 50G, which someway produced many GF when stage B was faulted (as shown from the relay log), for which the sytsme was registering mutilple ground faults "mysteriously" elsewhere downstream on the tie breaker (diagram). But before I digressing into different topics, I need to indicate according to the procedure I've explained to date, are we using the correct CT for this purposes? Many thanks.
We will mostly use this sort of latest transformer being an earth fault defense for medium level voltage distribution. The frequent CBCT illustration can be witnessed under.
Next manufacturers often have additional necessities; for example Siemens’ overcurrent, motor safety, line differential (non-pilot)and transformer differential are fantastic to go with the above, even though their line differential (pilot wire) and length relays involve the above and also have further limits on K’scc
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...
スーパーキャパシタ 小型、大容量を実現した電気二重層キャパシタ。環境に優しい、簡易バックアップ電源としてＯＡ、ＡＶ機器の他、通信関連機器にも利用されています。
Contrary to The everyday existing transformer, the CBCT receives its Major winding from the 3 section wires passing through the ring at its Middle of your iron core. Its secondary winding is wound to your ring formed iron core and connected to the earth fault relay.
The key benefit of employing CBCT being an earth fault security plan is always that On this security plan, only one CT website core is made use of in place of a few cores as in a standard procedure.
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。