GE UR series Instruction Manual page 43

2 PRODUCT DESCRIPTION
NEGATIVE SEQUENCE IOC
Current: Phasor
Pickup level: 0.000 to 30.000 pu in steps of 0.001
Dropout level: 97 to 98% of pickup
0.1 to 2.0 × CT rating: ±0.5% of reading
Level accuracy:
or ±0.4% of rated (whichever is greater);
> 2.0 × CT rating: ±1.5% of reading
< 2%
Overreach:
Pickup delay: 0.00 to 600.00 s in steps of 0.01
Reset delay: 0.00 to 600.00 s in steps of 0.01
< 20 ms at 3 × pickup at 60 Hz
Operate time:
Operate at 1.5 × pickup
Timing accuracy:
±3% or ±4 ms (whichever is greater)
PHASE DIRECTIONAL OVERCURRENT
°
Relay connection: 90 (quadrature)
Quadrature voltage: ABC phase seq.: phase A (V
B (V ), phase C (V
CA
seq.: phase A (V
phase C (V
Polarizing voltage threshold: 0.000 to 3.000 pu in steps of 0.001
Current sensitivity threshold: 0.05 pu
Characteristic angle: 0 to 359
Angle accuracy: ±2°
Operation time (FlexLogic™ operands):
Tripping (reverse load, forward fault):<
12 ms, typically
Blocking (forward load, reverse fault):<
8 ms, typically
NEUTRAL DIRECTIONAL OVERCURRENT
Directionality: Co-existing forward and reverse
Polarizing: Voltage, Current, Dual
Polarizing voltage: V_0 or VX
Polarizing current: IG
Operating current: I_0
3 × (|I_0| – K × |I_1|), IG
Level sensing:
Restraint, K: 0.000 to 0.500 in steps of 0.001
Characteristic angle: –90 to 90° in steps of 1
Limit angle: 40 to 90° in steps of 1, independent for
forward and reverse
Angle accuracy: ±2°
0.00 to 250.00 Ω in steps of 0.01
Offset impedance:
Pickup level: 0.002 to 30.000 pu in steps of 0.01
Dropout level: 97 to 98%
< 16 ms at 3 × pickup at 60 Hz
Operation time:
GE Multilin
), phase
BC
); ACB phase
AB
), phase B (V ),
CB AC
)
BA
°
in steps of 1
L60 Line Phase Comparison System
NEGATIVE SEQUENCE DIRECTIONAL OC
Directionality: Co-existing forward and reverse
Polarizing: Voltage
Polarizing voltage: V_2
Operating current: I_2
Level sensing:
Zero-sequence:|I_0| – K × |I_1|
Negative-sequence:|I_2| – K × |I_1|
Restraint, K: 0.000 to 0.500 in steps of 0.001
Characteristic angle: 0 to 90° in steps of 1
Limit angle: 40 to 90° in steps of 1, independent for
forward and reverse
Angle accuracy: ±2°
0.00 to 250.00 Ω in steps of 0.01
Offset impedance:
Pickup level: 0.015 to 30.000 pu in steps of 0.01
Dropout level: 97 to 98%
< 16 ms at 3 × pickup at 60 Hz
Operation time:
WATTMETRIC ZERO-SEQUENCE DIRECTIONAL
Measured power: zero-sequence
Number of elements: 2
Characteristic angle: 0 to 360° in steps of 1
Minimum power: 0.001 to 1.200 pu in steps of 0.001
Pickup level accuracy: ±1% or ±0.0025 pu, whichever is greater
Hysteresis: 3% or 0.001 pu, whichever is greater
Pickup delay: definite time (0 to 600.00 s in steps of
0.01), inverse time, or FlexCurve
Inverse time multiplier: 0.01 to 2.00 s in steps of 0.01
Time accuracy: ±3% or ±20 ms, whichever is greater
Operate time: <30 ms at 60 Hz
PHASE UNDERVOLTAGE
Voltage: Phasor only
Pickup level: 0.000 to 3.000 pu in steps of 0.001
Dropout level: 102 to 103% of pickup
Level accuracy: ±0.5% of reading from 10 to 208 V
Curve shapes: GE IAV Inverse;
Definite Time (0.1s base curve)
Curve multiplier: Time dial = 0.00 to 600.00 in steps of
0.01
Operate at < 0.90 × pickup
Timing accuracy:
±3.5% of operate time or ±4 ms (which-
ever is greater)
AUXILIARY UNDERVOLTAGE
Pickup level: 0.000 to 3.000 pu in steps of 0.001
Dropout level: 102 to 103% of pickup
Level accuracy: ±0.5% of reading from 10 to 208 V
Curve shapes: GE IAV Inverse, Definite Time
Curve multiplier: Time Dial = 0 to 600.00 in steps of 0.01
Timing accuracy: ±3% of operate time or ±4 ms
(whichever is greater)
2.2 SPECIFICATIONS
2
2-11