发明名称 |
LONG DELAY ACCELERATION MODULE FOR AN OVERLOAD RELAY SYSTEM |
摘要 |
A long acceleration module is provided for use with a current sensor which provides an output voltage which varies with load current. There is also provided an inverse time overload logic module which controls the tripping of a circuit breaker to protect the lines in which the load current flows in relationship to the output voltage of the current sensor. The long acceleration module allows motor startup when a motor is connected to the lines to be protected. The long acceleration module purposely simulates a relatively low voltage for the input to the inverse time overload logic module during the motor startup time when high but generally non-dangerous currents are drawn by the accelerating motor. |
申请公布号 |
AU1408676(A) |
申请公布日期 |
1977.11.24 |
申请号 |
AU19760014086 |
申请日期 |
1976.05.19 |
申请人 |
WESTINGHOUSE ELECTRIC CORP. |
发明人 |
WARDELL GARY;GLENN RAY TAYLOR |
分类号 |
H02H1/04;H02H3/08;H02H3/093 |
主分类号 |
H02H1/04 |
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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