SWITCHGEAR CHAMBER IN METAL HOUSING WITH DOOR LOCK Russian patent published in 1998 - IPC

FIELD: locking devices. SUBSTANCE: chamber of switchgear in metal housing with commutation space accommodates power-movable switching device and door arrangement for closing commutation space. Door leaf carries door lock which is engaged with interlocking setup and is provided with latch. Made in door leaf is at least one inlet opening for servicing of moving drive unit. Lock is provided with locking member having closing shaft and two lugs located on closing shaft. First of two lugs interacts with door latch. Second lug is located on closing shaft with possible axial displacement. It is brought in engagement or removed from engagement through at least one inlet opening for moving drive of switching device. Axial displacement of second lug is controllable by means of contact probe depending on presence of switching device in commutation space. EFFECT: higher efficiency. 5 cl, 5 dwg