SPRING 3P8643 - Caterpillar

Table 1
OP10 Setpoints (1) - AC Offset Adjustment    
Setpoint    Name    Description    Range Of Value    Factory Default    
PH A     Phase A Voltage Adjustment     Value used by the GSC+P in order to offset the voltmeter (for the phase A to neutral reading) from the actual voltage measurement.     −5.0% to +5.0% of measured voltage in increments of 0.04%     0    
PH B     Phase B Voltage Adjustment     Value used by the GSC+P to offset the voltmeter (for the phase B to neutral reading) from the actual voltage measurement.     −5.0% to +5.0% of measured voltage in increments of 0.04%     0    
PH C     Phase C Voltage Adjustment     Value used by the GSC+P to offset the voltmeter (for the phase C to neutral reading) from the actual voltage measurement.     −5.0% to +5.0% of measured voltage in increments of 0.04%     0    
PH A-B     Phase A-B Voltage Adjustment     Value used by the GSC+P to offset the voltmeter (for the phase A to phase B reading) from the actual voltage measurement.     −5.0% to +5.0% of measured voltage in increments of 0.04%     0    
PH B-C     Phase B-C Voltage Adjustment     Value used by the GSC+P to offset the voltmeter (for the phase B to phase C reading) from the actual voltage measurement.     −5.0% to +5.0% of measured voltage in increments of 0.04%     0    
PH C-A     Phase C-A Voltage Adjustment     Value used by the GSC+P to offset the voltmeter (for the phase C to phase A reading) from the actual voltage measurement.     −5.0% to +5.0% of measured voltage in increments of 0.04%     0    
( 1 ) The setpoints are programmed to the default value at the factory. The setpoints may be changed in order to satisfy the requirements of the customer or the requirements of the application.OP10 is used in order to adjust the voltmeter readings of the GSC+P. The GSC+P AC voltages are calibrated at the factory. The measurements of AC voltage should never require adjustment.Note: Caterpillar does NOT recommend altering the AC voltmeter. Performing this procedure reduces the accuracy of the GSC+P voltmeter.Note: The adjusted voltages are used for the display only. The adjusted voltages will not be sent over the CAT Data Link to other modules. The customer communication module is another module that may receive information over the CAT Data Link. The adjusted voltages are not used in order to determine the fault thresholds for the protective relaying function. The GSC+P determines the values that are not adjusted in both cases. The values that are not adjusted for AC voltage are not shown in both cases. The values that are not adjusted will be used instead of the displayed values.Procedure For AC Offset Adjustment
The adjusted voltages and the adjusted currents are shown on the left side