Neutral-earthing methods

Japanese: 中性点接地方式 - ちゅうせいてんせっちほうしき(英語表記)neutral-earthing methods
Neutral-earthing methods
Neutral grounding refers to grounding the neutral point of a generator or transformer connected to a power system directly or using a resistor or reactor. This is necessary to prevent abnormal voltages from occurring in the event of a ground fault and to ensure that protective relays operate quickly and reliably. There are several methods for grounding, including direct grounding, low resistance grounding, high resistance grounding, arc suppression reactor grounding, and compensation reactor grounding.

Source: Encyclopaedia Britannica Concise Encyclopedia About Encyclopaedia Britannica Concise Encyclopedia Information

Japanese:
電力系統に接続される発電機,変圧器の中性点を直接,または抵抗器,リアクトルを用いて接地することを中性点接地という。地絡事故時の異常電圧の発生を押えるとともに,保護継電器を迅速,確実に動作させるために必要である。方式として直接接地方式,低抵抗接地方式,高抵抗接地方式,消弧リアクトル接地方式,補償リアクトル接地方式などがある。

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