GE 850 - Transient Ground Fault Detection; CT Supervision (CTS)

11–16 850 FEEDER PROTECTION SYSTEM – INSTRUCTION MANUAL
TRANSIENT GROUND FAULT DETECTION CHAPTER 11: METERING
Transient Ground Fault Detection
Path: Metering > Transient Ground FD 1
The menu displays the wattmetric ground fault element operating power value.
Transient Reactive Power
Range: -1500.00 W to 1500.00 W in steps of 0.01 W
Default: 0.00 W
Transient Active Power
Range: -1500.00 W to 1500.00 W in steps of 0.01 W
Default: 0.00 W
Dynamic Threshold Pos Q
Range: -1500.00 W to 1500.00 W in steps of 0.01 W
Default: 0.00 W
Dynamic Threshold Neg Q
Range: -1500.00 W to 1500.00 W in steps of 0.01 W
Default: 0.00 W
Dynamic Threshold Pos P
Range: -1500.00 W to 1500.00 W in steps of 0.01 W
Default: 0.00 W
Dynamic Threshold Neg P
Range: -1500.00 W to 1500.00 W in steps of 0.01 W
Default: 0.00 W
CT Supervision (CTS)
Path: Metering > CT Supervision > CT Supervision 1(X)
CTS X SYM Imin
Range: 0.000 to 120000.000 A in steps of 0.001
Default: 0.000 A
This value is the minimum phase current magnitude of the three phases for the
symmetry check in the CT Supervision monitoring element.
CTS X SYM Imax
Range: 0.000 to 120000.000 A in steps of 0.001
Default: 0.000 A
This value is the maximum phase current magnitude of the three phases for the
symmetry check in the CT Supervision monitoring element.
CTS X SYM QUOTIENT
Range: 0.00 to 1.00 in steps of 0.01
Default: 0.00
This value is the quotient (I
min
/I
max
) from the symmetry check in the CT Supervision
element.