GE C70 Instruction Manual page 322

5.6 GROUPED ELEMENTS
5
Up to three identical bank overvoltage elements, one per each VT bank configured in hardware, are provided.
The bank phase overvoltage element responds to voltages across the capacitors of the bank. Three stages of definite time
operation, and one stage of inverse time operation are provided. Pickup thresholds of this function are adjustable on a per-
phase basis. The shape of the inverse time curve is user-programmable (via FlexCurves™) with individual pickup levels
and a multiplier common for all three phases. The definite time delays are individually programmable per stage.
The function works with grounded and ungrounded banks. With ungrounded banks, either the neutral point voltage is mea-
sured by the relay and used to derive the true bank voltage based on the bus and neutral-point voltages, or a simplified
method to provide proper voltage protection is used responding to vector differences between the phase-to-phase voltages.
5-198
BANK OV 1 STG 2A
MESSAGE
PICKUP: 1.100 pu
BANK OV 1 STG 3A
MESSAGE
PICKUP: 1.200 pu
BANK OV 1 STG 4A
MESSAGE
PICKUP: 1.050 pu
BANK OV 1 STG 1B
MESSAGE
PICKUP: 1.050 pu
BANK OV 1 STG 2B
MESSAGE
PICKUP: 1.100 pu
BANK OV 1 STG 3B
MESSAGE
PICKUP: 1.200 pu
BANK OV 1 STG 4B
MESSAGE
PICKUP: 1.050 pu
BANK OV 1 STG 1C
MESSAGE
PICKUP: 1.050 pu
BANK OV 1 STG 2C
MESSAGE
PICKUP: 1.100 pu
BANK OV 1 STG 3C
MESSAGE
PICKUP: 1.200 pu
BANK OV 1 STG 4C
MESSAGE
PICKUP: 1.050 pu
BANK OV 1 STG 1
MESSAGE
PKP DELAY: 60.00 s
BANK OV 1 STG 2
MESSAGE
PKP DELAY: 10.00 s
BANK OV 1 STG 3
MESSAGE
PKP DELAY: 2.00 s
BANK OV 1 STG 4
MESSAGE
PKP DELAY: 0.20 s
BANK OV 1 DPO DELAY:
MESSAGE
0.25 s
BANK OV 1 BLK:
MESSAGE
Off
BANK OV 1 TARGET:
MESSAGE
Self-Reset
BANK OV 1 EVENTS:
MESSAGE
Disabled
C70 Capacitor Bank Protection and Control System
Range: 0.800 to 2.000 pu in steps of 0.001
Range: 0.800 to 2.000 pu in steps of 0.001
Range: 0.800 to 2.000 pu in steps of 0.001
Range: 0.800 to 2.000 pu in steps of 0.001
Range: 0.800 to 2.000 pu in steps of 0.001
Range: 0.800 to 2.000 pu in steps of 0.001
Range: 0.800 to 2.000 pu in steps of 0.001
Range: 0.800 to 2.000 pu in steps of 0.001
Range: 0.800 to 2.000 pu in steps of 0.001
Range: 0.800 to 2.000 pu in steps of 0.001
Range: 0.800 to 2.000 pu in steps of 0.001
Range: 0.00 to 600.00 s in steps of 0.01
Range: 0.00 to 600.00 s in steps of 0.01
Range: 0.00 to 600.00 s in steps of 0.01
Range: 0.00 to 600.00 s in steps of 0.01
Range: 0.00 to 600.00 s in steps of 0.01
Range: FlexLogic operand
Range: Self-reset, Latched, Disabled
Range: Disabled, Enabled
5 SETTINGS
GE Multilin