发明名称 |
CIRCUIT INTERRUPTER WITH FRONT PANEL NUMERIC DISPLAY |
摘要 |
27 48,335 A circuit interrupter includes a trip unit consisting of a microcomputer and a liquid crystal numeric display mounted on the front panel of the trip unit. A power supply provides operating power for the trip unit even after a tripping operation. A microcomputer includes read-only memory for storing instructions to cause the microcomputer to sequentially display numeric values corresponding to the present electrical conditions through the circuit interrupter and the parameters defining the time-trip characteristic of the interrupter. Storage means are provided to store the level of phase or ground current resulting in a tripping operation and for displaying this value following a trip. Means are also provided for displaying a single digit numeric value indicating the cause of trip. |
申请公布号 |
PH23611(A) |
申请公布日期 |
1989.09.11 |
申请号 |
PH19160000254 |
申请日期 |
1981.03.25 |
申请人 |
WESTINGHOUSE ELECTRIC CORPORATION |
发明人 |
GARY FRANCIS SALETTA;ROBERT TRACY ELMS;JOSEPH CHARLES ENGEL |
分类号 |
H02H3/093;H02H;H02H3/04;H02H3/08;H02H7/26 |
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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