发明名称 |
CIRCUIT INTERRUPTER WITH DIGITAL TRIP UNIT AND POWER SUPPLY |
摘要 |
<p>68 49,010 A circuit breaker includes a microprocessorbased trip unit and a power supply for supplying operating power to the trip unit and the trip coil of the circuit breaker from either the internal current transformers of the circuit breaker or a plurality of external sources. The trip unit includes a numeric display for displaying a sequential series of parameter values under normal conditions. Under low-power conditions, the power supply provides pulses of operating power sufficient to enable the trip unit to execute all of its limit check functions and present a flashing display of a single parameter value.</p> |
申请公布号 |
CA1154527(A) |
申请公布日期 |
1983.09.27 |
申请号 |
CA19810374792 |
申请日期 |
1981.04.06 |
申请人 |
WESTINGHOUSE ELECTRIC CORPORATION |
发明人 |
ENGEL, JOSEPH C.;WAFER, JOHN A.;ELMS, ROBERT T.;SALETTA, GARY F. |
分类号 |
H02H3/093;H02H1/06;(IPC1-7):H02H3/08 |
主分类号 |
H02H3/093 |
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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