Indicating arrangement for indicating the condition of the switc

Details Indicating arrangement for indicating the condition of the switc Indicating arrangement for indicating the condition of the switc

1975-01-23

1977-02-08

Tolin, Gerald P.

Electricity: circuit makers and breakers

Liquid contact

Time delay

200308, 116124L, H01H 3302

Patent

active

040073459

ABSTRACT:
An indicating arrangement for indicating the condition of the switching contacts of a switching vessel is provided for a vacuum-switch apparatus having an actuator for opening and closing the switching contacts. The indicating arrangement includes a spring for pressing the switching contacts together when the actuator is actuated to close the contacts. The spring has a length corresponding to the closed position which is dependent upon the wear condition of the contacts. The changes of length of the spring are indicated as the switching contacts are worn from repeated switching operations.

REFERENCES:
patent: 3225170 (1965-12-01), Chabala
patent: 3619533 (1971-11-01), McFarland
patent: 3873797 (1975-03-01), Hannich

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