GE C70 - Page 406

5-202 C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL
GROUPED ELEMENTS CHAPTER 5: SETTINGS
5
Up to three identical phase current unbalance elements, one per each CT/VT module configured in hardware, are provided.
The element responds to a differential current signal measured via window-type CTs as a vectorial current difference
between two parallel banks. With the two capacitors in the same phase identical, the said differential current is zero. Small
differences between the capacitors of a given phase result in a small circulating current. Subtracting an adequate portion
of the total bank current in a given phase compensates for this inherent unbalance current.

CUR UNBALCE 1 STG 1A
PICKUP: 0.020 pu
Range: 0.001 to 5.000 pu in steps of 0.001

CUR UNBALCE 1 STG 2A
PICKUP: 0.030 pu
Range: 0.001 to 5.000 pu in steps of 0.001

CUR UNBALCE 1 STG 3A
PICKUP: 0.040 pu
Range: 0.001 to 5.000 pu in steps of 0.001

CUR UNBALCE 1 STG 4A
PICKUP: 0.050 pu
Range: 0.001 to 5.000 pu in steps of 0.001

CUR UNBALCE 1 STG 1B
PICKUP: 0.020 pu
Range: 0.001 to 5.000 pu in steps of 0.001

CUR UNBALCE 1 STG 2B
PICKUP: 0.030 pu
Range: 0.001 to 5.000 pu in steps of 0.001

CUR UNBALCE 1 STG 3B
PICKUP: 0.040 pu
Range: 0.001 to 5.000 pu in steps of 0.001

CUR UNBALCE 1 STG 4B
PICKUP: 0.050 pu
Range: 0.001 to 5.000 pu in steps of 0.001

CUR UNBALCE 1 STG 1C
PICKUP: 0.020 pu
Range: 0.001 to 5.000 pu in steps of 0.001

CUR UNBALCE 1 STG 2C
PICKUP: 0.030 pu
Range: 0.001 to 5.000 pu in steps of 0.001

CUR UNBALCE 1 STG 3C
PICKUP: 0.040 pu
Range: 0.001 to 5.000 pu in steps of 0.001

CUR UNBALCE 1 STG 4C
PICKUP: 0.050 pu
Range: 0.001 to 5.000 pu in steps of 0.001

CUR UNBALCE 1 STG 1
PKP DELAY: 30.00 s
Range: 0.00 to 600.00 s in steps of 0.01

CUR UNBALCE 1 STG 2
PKP DELAY: 10.00 s
Range: 0.00 to 600.00 s in steps of 0.01

CUR UNBALCE 1 STG 3
PKP DELAY: 1.00 s
Range: 0.00 to 600.00 s in steps of 0.01

CUR UNBALCE 1 STG 4
PKP DELAY: 0.20 s
Range: 0.00 to 600.00 s in steps of 0.01

CUR UNBALCE 1
DPO DELAY: 0.25 s
Range: 0.00 to 600.00 s in steps of 0.01

CUR UNBL 1 BLK STG1:
Off
Range: FlexLogic operand


CUR UNBL 1 BLK STG4:
Off
Range: FlexLogic operand

CUR UNBALCE 1
TARGET: Self-Reset
Range: Self-reset, Latched, Disabled

CUR UNBALCE 1
EVENTS: Disabled
Range: Disabled, Enabled