Three phase loss protection circuit
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United States of America Patent
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-
Jun 12, 1990
Grant Date -
N/A
app pub date -
Jul 31, 1989
filing date -
Jul 31, 1989
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A three phase loss protection circuit for a three phase rectifier. The rectifier includes a circuit which inhibits its operation when either of two of the three phases are lost. In response to the loss of the third phase, the loss protection circuit causes one of the other two phases to be lost at the input to the inhibiting circuit. The loss protection circuit does not interfere with the operation of the inhibiting circuit when either of the two phases are lost. In an alternative embodiment, the loss protection circuit includes circuitry to ensure that the rectifier is inhibited even though part of a lost phase may be recreated by the rectifier's input filter.
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