Electric transformer for underground mining machine

Details Electric transformer for underground mining machine Electric transformer for underground mining machine

1988-02-29

1989-01-03

Kozma, Thomas J.

Electricity: electrical systems and devices

Safety and protection of systems and devices

Transformer protection

336 60, 336 83, 336212, 340646, H02H 504, H01F 2710

Patent

active

047961430

ABSTRACT:
A transformer for use on an underground mining machine, such as a shearer loader. The transformer is cylindrical in shape and contains a central cavity extending therethrough to allow positioning of the transformer about a drive shaft of the motor of the mining machine. A tubular housing surrounds a cylindrical iron core with such housing containing a helically wound coolant duct to allow coolant fluid to flow therethrough.

REFERENCES:
patent: 2579308 (1951-12-01), Dole
patent: 3317874 (1967-05-01), Hensinper
patent: 3427577 (1969-02-01), Denes
patent: 4172243 (1979-10-01), Daughenty et al.
patent: 4303902 (1981-12-01), Lesster et al.

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