Electricity: circuit makers and breakers – Liquid contact – Time delay
Patent
1981-05-27
1983-06-28
Valentine, Donald R.
Electricity: circuit makers and breakers
Liquid contact
Time delay
204228, 204253, 204267, 204279, H01H 3300, C25B 904
Patent
active
043907636
ABSTRACT:
An electrical shunting switch assembly for use with a high continuous D.C. current electrochemical cell system, for electrically shunting or by-passing a cell of the system to permit maintenance or replacement, and then permitting stepped or gradual current diversion back through the cell. This shunting switch assembly includes a plurality of electrically parallel switch modules which comprises a vacuum switch, a series connected resistance value and switch operating means for sequentially operating the switches for current diversion. The switch modules are disposed in a matrix arrangement connected between bus connectors which are connectable across the cell, with switch modules having a low resistance value in alternating adjacent relationship to switch modules having a high resistance value. The low resistance value modules permit high shunting efficiency. The higher resistance value modules provide the capability for stepped or gradual current diversion.
REFERENCES:
patent: 4227987 (1980-10-01), Kircher et al.
patent: 4251334 (1981-02-01), Kircher
patent: 4302642 (1981-11-01), Hruda et al.
patent: 4317708 (1982-03-01), Specht et al.
patent: 4324634 (1982-04-01), Kircher et al.
Sutcliff W. G.
Valentine Donald R.
Westinghouse Electric Corp.
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