Switchboard drawout apparatus with interlock joint clamping...

Details Switchboard drawout apparatus with interlock joint clamping... Switchboard drawout apparatus with interlock joint clamping...

H - Electricity

02

B

306/275

H02B 11/14 (1980.01)

Patent

CA 1072162

41DA-3037 ABSTRACT OF THE DISCLOSURE Drawout apparatus includes a carriage mounting a circuit breaker and supported on telescoping rails to facilitate racking movement of the circuit breaker between extreme positions of electrical engagement and disengagement with respect to switchboard primary terminals. Racking movement into the engaged position from an intermediate test position is mechanically assisted by a racking screw. While in the engaged position, a separate clamping screw of a joint clamping mechanism is operated to exert equal and oppositely directed forces on interleaved contact fingers of plural associated breaker-switchboard terminal connectors. An access control assembly interlocked with the clamping and racking mechanisms and the carriage position regulates access to the clamping and racking screws.

281660

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