发明名称 |
Ground fault protective device |
摘要 |
A self-powered self-contained ground fault protective device including a current monitor, an electronic circuit for amplifying the output of the current monitor, a relay connected to the amplifying circuit and adapted to operate whenever ground fault current through the current monitor rises above a predetermined level, and an interchangeable rating plug including means for activating a circuit board switch. The current monitor, amplifying circuit, and relay are all supported and enclosed by a molded insulating housing. The rating plug is inserted into a socket on the exterior of the housing.
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申请公布号 |
US4077055(A) |
申请公布日期 |
1978.02.28 |
申请号 |
US19760696325 |
申请日期 |
1976.06.15 |
申请人 |
WESTINGHOUSE ELECTRIC CORPORATION |
发明人 |
WILSON, JOHN T.;ELLSWORTH, JAMES P. |
分类号 |
H01H71/12;H01H71/74;H02H3/00;H02H3/33;(IPC1-7):H02H3/28 |
主分类号 |
H01H71/12 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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