Expulsion interruption device for high voltage switches

Details Expulsion interruption device for high voltage switches Expulsion interruption device for high voltage switches

1975-02-10

1977-03-22

Macon, Robert S.

Electricity: circuit makers and breakers

Liquid contact

Time delay

H01H 3312, H01H 938

Patent

active

040138526

ABSTRACT:
A completely self-enclosed, weatherproof expulsion interruption device is disclosed which includes a detachable, arc-suppressing tube assembly which can be readily replaced in the field as needed, in conjunction with novel spring-loaded expulsion actuation mechanism for quickly breaking a high voltage circuit with only a minimum of objectionable arcing across the internal tube contacts of the device. The interrupter is especially adapted for use with high voltage, manually operable, blade-type switches and safely overcomes problems associated with arcing across switch contact points during opening thereof. As the switchblade is opened and engages the actuating arm of the interrupter, current is passed in shunt relationship through the interrupter until the respective switch contacts are safely parted. At this point spring-loaded trip mechanism within the interrupter housing quickly breaks the shunt circuit within the arc-suppressing tube of the interrupter to thereby harmlessly break the circuit without burning or pitting of the main switch contacts. The trip mechanism also includes return means for reestablishing the shunt path through the interrupter after each operation thereof.

REFERENCES:
patent: 3308259 (1967-03-01), Hulteen et al.

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