Electrical transmission or interconnection systems – Plural supply circuits or sources – Substitute or emergency source
Patent
1979-10-23
1981-10-13
Truhe, J. V.
Electrical transmission or interconnection systems
Plural supply circuits or sources
Substitute or emergency source
200 50C, 307 80, H02J 906
Patent
active
042950538
ABSTRACT:
An electric control system with mechanical interlock characterized by means for switching between normal and emergency supply lines extending to a load which comprise two parallel paths extending to the load which paths include spaced controlled devices, and mechanical interlock means between the several control devices for preventing closing of two or more control devices at the same time.
REFERENCES:
patent: 2573485 (1951-10-01), Pifke
patent: 3401364 (1968-09-01), Whiting
patent: 3710288 (1973-01-01), Grunert
patent: 3736538 (1973-05-01), Owen
patent: 3821607 (1974-06-01), Matsko et al.
patent: 4114005 (1978-09-01), Maier et al.
Kovatch George N.
Wallace James B.
Ginsburg Morris
Johns L. P.
Truhe J. V.
Westinghouse Electric Corp.
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