GE Multilin
C70 Capacitor Bank Protection and Control System
5-135
5 SETTINGS
5.6 GROUPED ELEMENTS
5
Figure 5–61: NEUTRAL DIRECTIONAL OVERCURRENT LOGIC
e) NEUTRAL CURRENT UNBALANCE
(ANSI 51NU)
PATH: SETTINGS
ÖØ
GROUPED...
Ö
SETTING GROUP 1(6)
ÖØ
NEUTRAL CURRENT
ÖØ
NEUTRAL CURRENT UNBALANCE 1(3)
NEUTRAL CURRENT
UNBALANCE 1
NTRL CUR UNBALCE 1
FUNCTION: Disabled
Range: Disabled, Enabled
MESSAGE
NTRL CUR UNBALCE 1
BANK SOURCE: SRC 1
Range: SRC 1, SRC 2, SRC 3, SRC 4, SRC 5, SRC 6
MESSAGE
NTRL CUR UNBALCE 1
K MAG: 0.0000
Range: 0.0000 to 0.1500 in steps of 0.0001
MESSAGE
NTRL CUR UNBALCE 1
K ANG: 0°
Range: 0 to 359° in steps of 1
MESSAGE
NTRL CUR UNBALCE 1
STG 1 PKP: 0.020 pu
Range: 0.001 to 5.000 pu in steps of 0.001
MESSAGE
NTRL CUR UNBALCE 1
STG 1 SLOPE: 2.0%
Range: 0.0 to 10.% in steps of 0.1
FLEXLOGIC OPERAND
FLEXLOGIC OPERAND
SETTING
SETTING
SETTING
SETTING
SETTINGS
SETTING
SETTING
NEUTRAL DIR OC1
FUNCTION:
NEUTRAL DIR OC1
SOURCE:
NEUTRAL DIR OC1 POL
VOLT:
NEUTRAL DIR OC1 OP
CURR:
NEUTRAL DIR OC1
POLARIZING:
NEUTRAL DIR OC1 BLK:
NEUTRAL DIR OC1 FWD
LIMIT ANGLE:
NEUTRAL DIR OC1 FWD
ECA:
NEUTRAL DIR OC1 REV
LIMIT ANGLE:
NEUTRAL DIR OC1
OFFSET:
NEUTRAL DIR OC1 FWD
PICKUP:
NEUTRAL DIR OC1 REV
PICKUP:
NEUTRAL DIR OC1 OP
CURR:
NEUTRAL DIR OC1 OP
CURR:
NEUTRAL DIR OC1 FWD
NEUTRAL DIR OC1 REV
Disabled=0
Measured VX
Voltage
Calculated V_0
}
}
Current
Ground Crt (IG)
Zero Seq Crt (I_0)
Dual
NOTE:
1) CURRENT POLARIZING IS POSSIBLE ONLY IN RELAYS WITH
THE GROUND CURRENT INPUTS CONNECTED TO
AN ADEQUATE CURRENT POLARIZING SOURCE
2) GROUND CURRENT CAN NOT BE USED FOR POLARIZATION
AND OPERATION SIMULTANEOUSLY
3) POSITIVE SEQUENCE RESTRAINT IS NOT APPLIED WHEN
_1 IS BELOW 0.8pu
I
827077AB.CDR
Off=0
Enabled=1
AND
AND
AND
AND
AND
AND
AND
OR
OR
OR
OR
I
G 0.05 pu
3( _0 - K _1 ) PICKUP
I
I
3( _0 - K _1 ) PICKUP
I
I
I
G PICKUP
I
G PICKUP
Voltage Polarization
Current Polarization
-3V_0
3I_0
FWD
FWD
FWD
REV
REV
REV
RUN
RUN
RUN
OR
OR
RUN
1.25 cy
1.5 cy
NEUTRAL DIR OC1 POS-
SEQ RESTRAINT:
NEUTRAL DIR OC1 POS-
SEQ RESTRAINT:
Summary of Contents for UR Series C70
Page 2: ......
Page 10: ...x C70 Capacitor Bank Protection and Control System GE Multilin TABLE OF CONTENTS ...
Page 344: ...5 220 C70 Capacitor Bank Protection and Control System GE Multilin 5 10 TESTING 5 SETTINGS 5 ...
Page 586: ...D 10 C70 Capacitor Bank Protection and Control System GE Multilin D 1 OVERVIEW APPENDIXD D ...