Lockable position interlock for rackable circuit breakers

Details Lockable position interlock for rackable circuit breakers Lockable position interlock for rackable circuit breakers

1997-05-02

2000-02-22

Friedhofer, Michael

Electricity: circuit makers and breakers

Interlocking

Drawout-type switchgear

200 5021, 200 5024, H01H 922, H01H 924

Patent

active

06028272&

ABSTRACT:
A lockable circuit breaker racking mechanism is provided with a breaker type detection mechanism preventing locking and removal of the key unless the correct breaker type has been installed. The same locking mechanism can also be used to secure the racking mechanism in the trip-free position.

REFERENCES:
patent: 4202028 (1980-05-01), Baird
patent: 4206329 (1980-06-01), Jarosz
patent: 4236189 (1980-11-01), Yosida
patent: 4298852 (1981-11-01), Maier et al.
patent: 4744001 (1988-05-01), Krafft et al.
patent: 4761521 (1988-08-01), Beck et al.
patent: 5278722 (1994-01-01), Peruso
Siemens Brochure entitled 5kV and 15kV Metal-Clad Switchgear (Type GM), pp. 1-50, Bulletin SG3258-01, .COPYRGT. 1996 Siemens Energy & Automation, Inc.
Siemens Brochure entitled 5kV and 15kV Vacuum Circuit Breakers (Type GMI), pp. 1-40, Bulletin SG3268-03, .COPYRGT. 1995 Siemens Energy & Automation, Inc.

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