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

TestingRestricted earth fault protection testingc Parameterization of the protection for Test coupling(using the TSM2001 pocket terminal, KP6 = 1).The test indicator lights up.Please noteThis operation should be carried out first sinceit inhibits tripping of the protection.c Checking of the setting:Cabling according to the diagram below63 ECM D25241654321SEPAM 2000ECM D3635241654321CSH 30AInject a current in the CSH 30 sensor associatedwith the neutral point current measurement CTto check the value of the setting.c Checking of stability:Cabling according to the diagram below63 ECM D25241SEPAM 2000ECM D3635241A654321654321CSH 30Inject a current in series in the CSH 30 sensorassociated with the neutral point currentmeasurement CT and in one of the phase currentinputs, to simulate a fault outside the zone.Check the stability for a current of 2 In.c Return to normal operation: perform the operationsin the following order:1. disconnect the injection box2. go back to normal operating mode;the test indicator goes off; the messages and latchingare cleared.Testing3/11