Synchronism check relay
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United States of America Patent
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-
Aug 27, 1985
Grant Date -
N/A
app pub date -
Jan 18, 1984
filing date -
Jan 18, 1984
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A synchronism check relay includes both a high set and a low set slip cut-off circuit. The low slip cut-off setting is based upon the maximum slip frequency that can be tolerated and still allow reclosing. The high slip cut-off setting is a function of the maximum phase angle difference permissible between the voltages on the bus and line sides of the circuit breaker, and the time that the line is de-energized.
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Cited Art Landscape
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