GE C70

CHAPTER 5: SETTINGS GROUPED ELEMENTS
C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL 5-247
5
Figure 5-131: Bank phase overvoltage logic
5.7.8.9 Neutral voltage unbalance (ANSI 59NU, IEC PVCB/PTOV)
SETTINGS  GROUPED ELEMENTS  SETTING GROUP 1(6)  VOLTAGE ELEMENTS  NEUTRAL VOLTAGE
UNBALANCE 1(3)
 NEUTRAL VOLTAGE
 UNBALANCE 1

NTRL VOL UNBAL 1
FUNCTION: Disabled
Range: Disabled, Enabled

NTRL VOL UNBAL 1
NTRL SOURCE: SRC 1
Range: SRC 1, SRC 2, SRC 3, SRC 4, SRC 5, SRC 6

NTRL VOL UNBAL 1
BUS SOURCE: SRC 1
Range: SRC 1, SRC 2, SRC 3, SRC 4, SRC 5, SRC 6

NTRL VOL UNBAL 1 BUS
3V0: Calculated
Range: Calculated, Measured

NTRL VOL UNBAL 1
GROUND: VT (ungrnd)
Range: VT (ungrnd), CTxR (grnd)

NTRL VOL UNBAL 1
AB RATIO: 1.0000
Range: 0.7500 to 1.2500 in steps of 0.0001

NTRL VOL UNBAL 1
AC RATIO: 1.0000
Range: 0.7500 to 1.2500 in steps of 0.0001

NTRL VOL UNBAL 1
STG 1 PKP: 0.010 pu
Range: 0.001 to 1.000 pu in steps of 0.001

NTRL VOL UNBAL 1
STG 1 SLOPE: 0.0%
Range: 0.0 to 10.0% in steps of 0.1

NTRL VOL UNBAL 1
STG 2 PKP: 0.020 pu
Range: 0.001 to 1.000 pu in steps of 0.001

NTRL VOL UNBAL 1
STG 2 SLOPE: 0.0%
Range: 0.0 to 10.0% in steps of 0.1