REPEATABLE HIGH-CURRENT CONTACTOR Russian patent published in 2014 - IPC H01H33/00 

FIELD: electricity.

SUBSTANCE: invention is related to repeatable high-current switching equipment operated in direct and alternating current circuits and can be used in power supply systems of electrophysical installations. High-current contactor contains the inner and outer coaxial and fixed contact electrodes, a movable disc-shaped contact electrode with a circular contact and an inductor coil placed in a dielectric casing with casing cover installed on the top, above the inductor coil. The circular contact is made of separate independent lamellae and fixed at the turntable of the movable contact electrode. Resilient members are inserted between the turntable and lamellae. The fixed contact electrodes are removable and equipped with cooling channels. Plates made of high-conductive material are fixed to contact surfaces of the movable and fixed contact electrodes. The casing cover installed above the inductance coil has an inner cavity and is connected via a number of openings made in the inductor case with space above the movable contact electrode. At that in the fixed inner contact electrode there is a cavity increasing the gas space over the movable contact electrode and in the inductor case there is a gas valve installed in the case axial part.

EFFECT: potential switching of electric circuits for the powerful supply sources at long-term passage of high currents with provision of fast response, low transient resistance of the contactor group, increase in service life and operational reliability.

5 cl, 2 dwg