Chapter 6—Motor Protection142 Power Xpert C445 Global Motor Management Relay MN042003EN—October 2016 www.eaton.comResidual Ground FaultThe Residual Ground Fault protection monitors the groundcurrent of the motor and will trip the motor if the groundcurrent exceeds the set threshold. The Ground Faultprotection is always active.Table 42. Ground FaultNote1 ABC wiring recommended.Supply ProtectionThe C445 monitors the supply voltage to the motor for thefaults described below. These protections are only availableif the C445 Measurement Module has the voltage option.Users can easily customize protection settings in theprotection menu of the Monitoring User Interface or ofPower Xpert inControl.To enable/disable individual trip and warning protections,navigate to Protections R General R Trip Enable / WarningEnable.To customize protection levels and delays for each protectionfeature, navigate to the category of that protection inProtections R Current / Voltage / Power / Frequency /Ground FaultWhen the Supply fault is enabled in Trip mode, the C445 willtrip if a Voltage fault is detected when the motor is running.In this mode, a Start will be inhibited if the fault condition ispresent. Starts will be allowed as soon as the fault conditionis cleared.Users may also optionally inhibit starting based on presenceof a voltage fault. To inhibit starting based on voltage faults,enable “Inhibit Start on Voltage Fault” in the Protections RGeneral menu.FaultCode ModbusFault Action Delay (Seconds)Protection Action Units Frame Min. Max. Default Min. Max. Default Modbus4 Ground Fault(earth)Fault Trip 1060 amps C445MA2P4… 0.12 2.4 1 1 60 5 1063C445MA005… 0.25 5 3C445MA032… 1 1 9.6 3C445MA045… 1 1 13.5 3C445MB072… 3 1 21.6 3C445MC090… 3 27 3C445MC136… 34 40.8 34C445M…EXT 30% of CTPrimary50% of CTPrimary50% of CTPrimaryFault Warning 1061 2 1079Fault Trip Delay At powerup 0 5 0 1062Use Fault TripInhibit1064 Disable Enable DisableFault Trip Inhibit -Run1065 % 25 100 50 0 0 0
