3-54
•
••
•
Chapter 3 Paramters/Functions Innovation Series Medium Voltage GP Type - G Drives GEH-6385
Ground Fault Protection (Fast)The Ground Fault Protection (Fast) tests the phase currents to verify that there is no
ground current in the system.
Function inputs
The following table specifies the input parameters of the Ground Fault Protection
(Fast) function.
Parameter Description
Phase A current Phase A current feedback. Amps
Phase B current Phase B current feedback. Amps
Phase C current Phase C current feedback. Amps
Function outputs
The following table specifies the output variables of the Ground Fault Protection
(Fast) function.
Variable Description
Gnd current, coarse Ground current, filtered. Amps
Function configuration
The following table specifies the configuration parameters for the Ground Fault
Protection (Fast) function.
Parameter Description
Gnd flt coarse trip Current level at which the Gnd flt, coarse trip
fault occurs. Amps
Faults and alarms
The following faults and alarms are declared by the Ground Fault Protection (Fast)
function.
Fault / Alarm Description
Gnd flt, coarse Occurs when Gnd current, coarse > Gnd flt
coarse trip.
Function description
Gnd current, coarse is determin ed by summing and filtering the three phase currents
Phase A current, Phase B current, and Phase C current.
The configuration parameter Gnd flt coarse trip can be set to a default value by
running the Ground Fault Setup.