Device detecting excessive wear of a carbon wiper of an autotran

Details Device detecting excessive wear of a carbon wiper of an autotran Device detecting excessive wear of a carbon wiper of an autotran

1995-07-24

1996-06-04

Raevis, Robert

Measuring and testing

By abrasion, milling, rubbing, or scuffing

340646, G08B 2100

Patent

active

055222528

ABSTRACT:
A detection device for detecting excessive wear of a carbon brush of an autotransformer includes a winding wound on a toroidal iron core, a shaft secured by the iron core, a rotary arm extending from the shaft with a hole facing the iron core, a copper block slidably received within the hole of the rotary arm with a flange for preventing the block from passing through the hole of the rotary arm, a carbon brush mounted under the copper block in contact with the winding, a wire connected to the copper block, and a detection means secured on the rotary arm and under the flange for contacting the flange when the carbon brush is excessively worn.

REFERENCES:
patent: 532782 (1895-01-01), Henry
patent: 4024525 (1977-05-01), Baumgartner et al.
patent: 4831302 (1989-05-01), Dietrich et al.

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