Inside a balanced three phase system or throughout typical or issue, the sum with the vector of each and every period present-day is equivalent to zero. Or in mathematical way:
In this manner, we won't come across any remainder of zero sequence current while in the CBCT primary winding. Because it is often a well balanced three stage, there will not be any flux created in the CBCT core. Consequently, the current inside the secondary winding is zero.
In distinction, the overall period recent will not be zero under irregular instances. A zero sequence present-day will then stream during the CBCT secondary circuit since the stage present is out of balance.
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House / Circumstance Reports / The distinction between latest transformer and zero sequence existing transformer The distinction between existing transformer and zero sequence present-day transformer
Don't have access to the manual now but I am pretty positive the 750 also internally calculates the residual (imbalance) on the period currents(most microprocessor relays try this). I feel the guide will phone the calculated residual 50/51N instead of 50/51G. Or one thing like that. Alan
Assuming that more info CBCT is running while in the linear region, then the magnetic flux created in the Main of CBCT might be right proportional to its corresponding line existing. Consequently it can be penned as:
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なお、下の記事は私（管理人）が書いた超概念的な内容です。もっと理論的な解説は鹿の骨さんが下さった以下を参照ください。
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This coordination can help isolate defective elements of the method, minimizing downtime and preserving devices from problems.
受電設備の母線で１線地絡事故が発生した例を示します。地絡ということは、大地に電流が流れたということを指します。大地に流れた”地絡電流”は地絡した相以外の相の電線の対地静電容量を通って電流が流れます。