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NTIS 바로가기국가/구분 | United States(US) Patent 등록 |
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국제특허분류(IPC7판) |
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출원번호 | US-0838263 (1977-09-30) |
발명자 / 주소 |
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출원인 / 주소 |
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인용정보 | 피인용 횟수 : 18 인용 특허 : 1 |
A ground fault detection system is taught which may be utilized on delta or wye connected polyphase electrical systems. The presence of a ground fault causes the neutral to ground voltage of a wye connected electrical system to increase to some value other than zero. Since a delta power system can b
A ground fault detector for a three phase wye connected electrical power system, comprising: (a) voltage sensitive relay coil means connected between the neutral of said power system and ground, said relay coil means being actuated by the voltage which results between said neutral and said ground as
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