Transformer switch

Details Transformer switch Transformer switch

1983-09-09

1985-01-29

Scott, J. R.

Electricity: circuit makers and breakers

Multiple circuit control

Pivoted contact

200 8A, H01H 1958, H01H 2178

Patent

active

044968051

ABSTRACT:
A transformer tap changing switch including a rotary contactor shaft supporting spaced apart radially extending arms having roller contactor sets mounted thereon and yieldably biased into engagement with adjacent ones of an array of elongated cylindrical rod contacts supported between spaced apart switch frame plates. Each of the rod contacts includes a centrally disposed lug or blade type terminal located between the roller contactor assemblies and spaced sufficiently from each such that current flow along the rod contact elements between the terminal portions and the rotary switch contactors establish counteracting magnetic force fields which substantially cancel each other and eliminate any forces acting on the rotary contactor assembly. The switch includes a manually actuated lever for rotating the contactor shaft and which is provided with a switch position locking mechanism including a spring biased pin which projects into a selected hole in a position locking plate member.

REFERENCES:
patent: 1412002 (1922-04-01), Hendricks, Jr.
patent: 1725078 (1929-08-01), Hill
patent: 1785575 (1930-12-01), Blume
patent: 2418616 (1947-04-01), Batcheller
patent: 2903530 (1959-09-01), Wilson, Jr.
patent: 3170048 (1965-02-01), Glatz et al.
patent: 3177307 (1965-04-01), Weber et al.
patent: 3652812 (1972-03-01), Ristuccia
patent: 3992595 (1976-11-01), Eley
patent: 4160224 (1979-07-01), Owen

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