CHECK METHOD OF VACUUM CIRCUIT BREAKER OF TRACTION CURRENT RECTIFIER FUNCTIONING Russian patent published in 2013 - IPC H01H33/66 G01R31/327 

FIELD: electricity.

SUBSTANCE: invention relates to check method of functioning of vacuum circuit breaker (12) of traction rectifier with at least one four-quadrant actuator (2) of network side and pulsed rectifier (4) of load side, which are electrically connected in parallel via capacitor (C_ZK) of intermediate loop on the side of steady voltage; and with traction transformer (10) with at least one secondary winding (8), which outlets are connected to outlets (16, 18) of alternating voltage side of actuator (2), and which primary winding has possibility of connection to circuit alternating voltage (u _N) via vacuum circuit breaker (12). When circuit breaker (12) is opened, actuator (2) is controlled exactly when circuit alternating voltage (u _N) is located in time relative to input voltage (u _St) of actuator, so that differential voltage (Δu), determined between circuit alternating voltage (u _N) and input voltage (u _St) of actuator, complies with predetermined test voltage by amplitude. Then it is checked whether current flows from supply mains to actuator (2).

EFFECT: possibility to check operability of circuit breaker of traction rectifier at any time without test equipment.

4 cl, 2 dwg