| 摘要 |
<p>An undercarriage (200) for use with a circuit breaker includes a bottom plate (202) and a front beam (204) removably coupled to the bottom plate (202) via a lead screw (234), wherein the lead screw (234) is configured to engage with a threaded support (236) that is coupled to the bottom plate (202) to facilitate racking the circuit breaker in a switchgear (100). The undercarriage (200) also includes a keylock assembly (300) configured to enable racking the circuit breaker in the switchgear (100). The keylock assembly (300) includes a lock (304) and an interlock (302) configured to coupled to the lock (304) such that the interlock (302) is movable between a locked position and an unlocked position, wherein engagement of a racking handle (238) with the lead screw (234) is enabled when the interlock (302) is in the unlocked position.</p> |
