Inductor devices – Polyphase
Patent
1992-01-28
1993-04-13
Kozma, Thomas J.
Inductor devices
Polyphase
336 60, 336213, 336223, 336225, H01F 2708, H01F 2730
Patent
active
052026647
ABSTRACT:
A three phase transformer, e.g. a distribution transformer comprising three, substantially identical, frame shaped winding assemblies each containing primary and secondary windings which together form half legs having substantially semicircular cross section. The winding assemblies are placed together to form a triangular structure, so called temple configuration, wherein the half legs of adjacent winding assemblies combine into three legs having substantially circular cross section. A magnetic circuit is formed around each leg by winding a continuous strip of a ferromagnetic sheet material around the leg.
REFERENCES:
patent: 3617965 (1971-11-01), Trench
patent: 4234862 (1980-11-01), Prerotat
patent: 4588971 (1986-05-01), Beisser
patent: 4639705 (1987-01-01), Beisser
patent: 4906960 (1990-12-01), Alexandrov
Crozier John H.
Kozma Thomas J.
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