Sepam - HV/MV Protection and control units (ENG) - Trinet

Delay capacitor re-energizingBlock diagramFor capacitors operated by a circuit breaker(1 time delay).I2 input:circuit breaker opent 0T7For capacitors operated by switches(1 time delay per capacitor).I23 input:capacitor 1 switchopent 0T31closingenabledclosingenabledApplicationAfter tripping, this function is used to inhibit capacitor re-energizing for an adjustabletime period.Time-delayed authorization of closing ensures that the capacitors are dischargedcorrectly before they are re-energized.OperationTime delay T7, T31, T32 or T33 is started up after the breaking device opens.Reclosing is inhibited until the time delay runs out. The message DISCHARGEappears on the display unit during the time that closing is inhibited.After the message disappears, closing is enabled, provided it has not been inhibitedfor other reasons (fault tripping, acknowledgement required).I25 input:capacitor 2 switchopenI27 input:capacitor 3 switchopent 0T32t 0T33closingenabledclosingenabledCommissioningSet the T7, T31, T32 or T33 time delay:c using the pocket terminal: timer option in the program logic menu. Defaultsetting: 200 ms.c via the communication link.Testingc Activate input I2, I23, I25 or I27 to 1 then 0 (breaking device in open position).The message DISCHARGE should appear on the display unit during the T7, T31,T32 or T33 setting period. Closing is inhibited while the message is displayed.1/26 Control and monitoring functions