GE SPM Series, Instruction Manual

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SPM Synchronous Motor Protection & Control GE Power Management
5.5 CALIBRATION MENU 5 SETPOINTS
5
5.5 CALIBRATION MENU 5.5.1 FULL-SCALE EXCITER DC VOLTAGE
FUNCTION:
Use this setpoint to fine-tune the metered DC exciter voltage, input to the SPM from the VDN. To calibrate the
exciter voltage compare the reading on the SPM with the measured value of an external meter and adjust this
setpoint as necessary. Note that this must be done while the motor is running, thus it is advisable that the EX
FLD VOLTS setting be turned OFF until calibration is complete.
5.5.2 FULL-SCALE EXCITER DC AMPS
FUNCTION:
Use this setpoint to fine tune the metered DC exciter current, input to the SPM from the calibration module and
DCCT. Coarse adjustment should be made via the calibration module potentiometer. To calibrate the exciter
amps compare the reading on the SPM with the measured value of an external meter and adjust this setpoint
as necessary. Note that this must be done while the motor is running, thus it is advisable that the EX FLD
AMPS setting be turned OFF until calibration is complete.
5.5.3 FULL-SCALE MOTOR AC AMPS
FUNCTION:
Use this setpoint to fine tune the metered AC motor current, input to the SPM from the connected CT(s).
FS EXC VOLT
ENTER to modify
Range: 0.60 to 1.50 V
Step: 0.01
FS EXC AMPS
ENTER to modify Range: 0.60 to 1.50 A
Step: 0.01
FS MTR AMPS
ENTER to modify
Range: 0.60 to 1.50 A
Step: 0.01