Fuse holders for transformers

Details Fuse holders for transformers Fuse holders for transformers

1974-08-26

1977-03-01

Miller, J. D.

Electricity: electrothermally or thermally actuated switches

Electrothermally actuated switches

Fusible element actuated

337186, 337205, H01H 8502

Patent

active

040104370

ABSTRACT:
A fuse holder for a transformer comprising a generally tubular housing secured at one end to the transformer end wall and enclosing the fuse. A tapered resilient adapter sleeve is disposed within the outer end of the housing and carries a bushing well for a high voltage line adapter. The adapter sleeve seals the housing interior. An annular clamp secured to the transformer wall holds the adapter sleeve and fuse holder housing in place. The inner end of the air type fuse is connected to the transformer primary winding by a helical coil spring compressed between a projection on the fuse and a stainless steel tube. The fuse and bushing well are removable by detaching a clamp ring on the outside of the transformer and slipping the parts out through the adapter sleeve and housing. The construction permits immersion of the air type fuse and insures isolation and de-energization of the internal transformer parts upon opening of the fuse.

REFERENCES:
patent: 1505531 (1924-08-01), Bensett
patent: 1668381 (1928-05-01), Schild
patent: 1824804 (1931-09-01), Douglas
patent: 1873042 (1932-08-01), Rohrdanz
patent: 2918557 (1959-12-01), Link
patent: 2975254 (1961-03-01), Yanagisawa
patent: 3829810 (1974-08-01), Giegerich

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