| 摘要 |
<p>A high speed tranfer switch is provided for transferring a multiphase load (22) among a number of multiphase A.C. power sources (24, 26, 28). If the initially selected source deviates from desired limits, the transfer switch tranfers the load to an alternate source on a phase-by-phase basis. Antiparallel-connected SCRs (30, 32, 34) are used to allow the load current in each phase to commutate to zero before the load is transferred to the alternate power source.</p> |
