Three phase loss protection circuit

Details Three phase loss protection circuit Three phase loss protection circuit

1989-07-31

1990-06-12

Jennings, Derek S.

Electricity: electrical systems and devices

Safety and protection of systems and devices

With specific quantity comparison means

361 92, 363 52, H02H 312

Patent

active

049338030

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.

REFERENCES:
patent: 4620296 (1986-10-01), Siemon

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