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

Logic discrimination (cont’d)Block diagram: motor - capacitor applicationsovercurrentinst. set point 1 (F011/1)inst. set point 2 (F012/1)earth faultinst. set point 1 (F081/1)inst. set point 2 (F082/1)overcurrentt-d set point 1 (F011/2)t-d set point 2 (F012/2)earth faultt-d set point 1 (F081/2)t-d set point 2 (F082/2)≥1≥1output O14: BI transmissionto BI transmission&t 0T3 = 0.2 sinhibition of BI transmissionif fault is not clearedtrippingSettingsSettings:c using the pocket terminal:v KPx parameter setting: parameter item in the program logic menu,v time delay setting: timer item in the program logic menu,v protection setting: F item in the protection menu.c via the communication link: time delay and protection only.Pilot wire testingBI may be transmitted b y setting terminal contact KP18 to 1. The Sepam 2000 thatreceive the BI will display the message RECEIVE BI. The KP18 contactautomatically returns to zero after it has been activated.This terminal contact facilitates pilot wire testing.Commissioningc Connect the pilot wires between the I12 receive BI inputs of the level "n+1"Sepam or Sepams and the O14 transmit BI outputs of the level "n" Sepams.c Set time delay T3 to 200 ms.c Set the phase overcurrent and earth fault protections.The time delays for the items (set points 1 to 4) used are set according to thefollowing discrimination rules:function(**)discriminationovercur.1 F011overcur.2 F012 time-basedearth fault1 F081(*)earth fault2 F082 time-basedovercur.3 F013overcur.4 F014 logicearth fault3 F083(*)earth fault4 F084 logic(*) For generator Sepam 2000, F06x replace F08x.(**) The names of the protections correspond to the names sed in the pocket terminal.1/18 Control and monitoring functions