High speed transfer switch

Details High speed transfer switch High speed transfer switch

1991-01-09

1993-01-26

Pellinen, A. D.

Electrical transmission or interconnection systems

Plural supply circuits or sources

Connecting or disconnecting

307 64, H02J 310

Patent

active

051824647

ABSTRACT:
A high speed transfer switch is provided for transferring a multiphase load among a number of multiphase A.C. power sources. If the initially selected source deviates from desired limits, the transfer switch transfers the load to an alternate source on a phase-by-phase basis. Antiparallel-connected SCRs are used to allow the load current in each phase to commutate to zero before the load is transferred to the alternate power source.

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