发明名称 |
Apparatus and method for servicing a distribution bus |
摘要 |
Protection is provided for servicing a distribution bus by grounding the line side of a circuit breaker through which the distribution bus is fed and then closing the circuit breaker. The trip unit of the circuit breaker includes logic, in addition to the normal protection logic, which opens the circuit breaker main contacts without delay if current is detected upon closing of the grounded circuit breaker. However, if the grounded circuit breaker has been closed for a selected period of time and then current is detected, the distribution bus is kept at zero potential by not operating the breaker. A breaker auxiliary switch with a mechanical delay provides the indication of the selected time interval after closing the circuit breaker.
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申请公布号 |
US2003107853(A1) |
申请公布日期 |
2003.06.12 |
申请号 |
US20010013188 |
申请日期 |
2001.12.07 |
申请人 |
MARCHAND FRANCOIS J.;LAGREE JAMES L.;MATSKO JOSEPH JACOB;DAVIES NORMAN;JOHNSON RICHARD ARTHUR |
发明人 |
MARCHAND FRANCOIS J.;LAGREE JAMES L.;MATSKO JOSEPH JACOB;DAVIES NORMAN;JOHNSON RICHARD ARTHUR |
分类号 |
H02H1/06;H02H11/00;(IPC1-7):H02H3/00 |
主分类号 |
H02H1/06 |
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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