Electric switchgear for tramway switches SPT

Tram switchgear, trailable, with internallock, SPT is designed for switching tramway switch blades in intermittent duty and for locking the ones and controlling their position in continuous duty.

The electric switchgear is designed for operation under the moderate climate conditions

(U execution per GOST 15150-69) at temperature from - 60°C up to +55°C, at relative humidity up to 100% at +25°C.

The SPT control provides:

- disconnecting (not connecting) a control circuit when a switchis unlocked;

- disconnecting (not connecting) a control circuit when a gap between a switch blade adpressed to a stock rail is more than a pre-set one;

- connecting a control circuit only after a switch is locked in the extreme position;

- disconnecting a control circuit when the fittings are failed (breakage, bending);

- disconnecting a control circuit when a switch point is trailed;

-  disconnecting a control circuit when a switch point is operated manually.