CHAPTER 11: METERING THERMAL CAPACITY
850 FEEDER PROTECTION SYSTEM – INSTRUCTION MANUAL 11–15
Thermal Capacity
The menu displays the thermal capacity values in percentage format. These values can be
cleared by the commands in Records > Clear Records or in Device > Clear Records .
Path: Metering > Thermal Capacity
Phase A Thermal Capacity (Phase A Thermal 1[X] Cap) 0.0 %
Range: 0.0 to 100.0 %
Phase B Thermal Capacity (Phase B Thermal 1[X] Cap) 0.0 %
Range: 0.0 to 100.0 %
Phase C Thermal Capacity (Phase C Thermal 1[X] Cap) 0.0 %
Range: 0.0 to 100.0 %
Directional Power
Path: Metering > Directional Power
The effective operating quantities of the sensitive directional power elements are
displayed here. The display may be useful to calibrate the feature by compensating the
angular errors of the CTs and VTs with the use of the RCA and CALIBRATION settings.
Directional Power 1
Range: -214748364.8 kW to 214748364.7 kW
Default: 0.0 kW
...
Directional Power X
Range: -214748364.8 kW to 214748364.7 kW
Default: 0.0 kW
Wattmetric Ground Fault
Path: Metering > Wattmetric Ground Fault
The menu displays the wattmetric ground fault element operating power value.
Wattmetric Ground Fault 1
Range: -21474836.48 W to 21474836.47 W
Default: 0.00 W
...
Wattmetric Ground Fault X
Range: -21474836.48 W to 21474836.47 W
Default: 0.00 W
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