Method for testing and repairing synchronous motors

Details Method for testing and repairing synchronous motors Method for testing and repairing synchronous motors

1987-11-23

1989-03-21

Hall, Carl E.

Metal working

Method of mechanical manufacture

Electrical device making

2940208, 310 42, 310 68A, 310 71, 324158MG, H02K 1514

Patent

active

048131156

ABSTRACT:
An apparatus for testing a synchronizing control circuit for any assembly relying upon detecting the relative closeness of one voltage of varying frequency to another voltage of different varying frequency, comprising a test circuit including a first circuit for determining the frequency at which the control circuit operates and a second circuit for determining the operational response of an individual control circuit assembly. A test selection circuit is used to select the desired portion of the test circuit. The apparatus simulates the frequency difference for a frequency comparator circuit of multi generator installations and the operation of a starting synchronous motor, which enables all the components of the comparator control circuit and the components of the synchronous motor exciter control circuit to be checked without actual operation of the prime movers that generate the voltage of varying frequency. Further, the synchronous motor exciter control circuit mounting assembly is made replaceable to facilitate faster and accurate component repairs.

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