Electrical transmission or interconnection systems – Plural supply circuits or sources – Substitute or emergency source
Patent
1979-05-10
1981-03-17
Hix, L. T.
Electrical transmission or interconnection systems
Plural supply circuits or sources
Substitute or emergency source
307 87, 307152, H02J 906, H02J 308
Patent
active
042569729
ABSTRACT:
Power transfer relay circuitry is disclosed for providing synchronous transfer of power such as from an auxiliary source or system to a motor or motor bus; the circuitry effects the transfer of power when the phase difference between the motor bus and the auxiliary power source is very nearly zero degrees.
REFERENCES:
patent: 3491248 (1970-01-01), Beckwith
patent: 3599007 (1971-08-01), Martin
patent: 3794846 (1974-02-01), Schlicher
patent: 4031407 (1977-06-01), Reed
Beckwith Robert W.
Wyatt Michael A.
Aubel Leo J.
Beckwith Electric Co., Inc.
Hix L. T,.
Schreyer Stafford D.
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