GE L90 Instruction Manual page 38

2.4 SPECIFICATIONS
PHASE DIRECTIONAL OVERCURRENT
Relay connection:
Quadrature voltage:
ABC phase seq.: phase A (V
ACB phase seq.: phase A (V
Polarizing voltage threshold: 0.000 to 3.000 pu in steps of 0.001
Current sensitivity threshold: 0.05 pu
2
Characteristic angle:
Angle accuracy:
Operation time (FlexLogic™ operands):
Tripping (reverse load, forward fault):< 12 ms, typically
Blocking (forward load, reverse fault):< 8 ms, typically
NEUTRAL DIRECTIONAL OVERCURRENT
Directionality:
Polarizing:
Polarizing voltage:
Polarizing current:
Operating current:
Level sensing:
Restraint, K:
Characteristic angle:
Limit angle:
Angle accuracy:
Offset impedance:
Pickup level:
Dropout level:
Operation time:
NEGATIVE SEQUENCE DIRECTIONAL OC
Directionality:
Polarizing:
Polarizing voltage:
Operating current:
Level sensing:
Zero-sequence:
Negative-sequence:
Restraint, K:
Characteristic angle:
Limit angle:
Angle accuracy:
Offset impedance:
Pickup level:
Dropout level:
Operation time:
2-14
°
90 (quadrature)
), phase B (V ), phase C (V
BC CA
), phase B (V ), phase C (V
CB AC
°
0 to 359 in steps of 1
±2°
Co-existing forward and reverse
Voltage, Current, Dual
V_0 or VX
IG
I_0
3 × (|I_0| – K × |I_1|), IG
0.000 to 0.500 in steps of 0.001
–90 to 90° in steps of 1
40 to 90° in steps of 1, independent for
forward and reverse
±2°
0.00 to 250.00 Ω in steps of 0.01
0.05 to 30.00 pu in steps of 0.01
97 to 98%
< 16 ms at 3 × Pickup at 60 Hz
Co-existing forward and reverse
Voltage
V_2
I_2
|I_0| – K × |I_1|
|I_2| – K × |I_1|
0.000 to 0.500 in steps of 0.001
0 to 90° in steps of 1
40 to 90° in steps of 1, independent for
forward and reverse
±2°
0.00 to 250.00 Ω in steps of 0.01
0.05 to 30.00 pu in steps of 0.01
97 to 98%
< 16 ms at 3 × Pickup at 60 Hz
L90 Line Differential Relay
PHASE UNDERVOLTAGE
Voltage:
Pickup level:
)
Dropout level:
AB
)
BA
Level accuracy:
Curve shapes:
Curve multiplier:
Timing accuracy:
AUXILIARY UNDERVOLTAGE
Pickup level:
Dropout level:
Level accuracy:
Curve shapes:
Curve multiplier:
Timing accuracy:
PHASE OVERVOLTAGE
Voltage:
Pickup level:
Dropout level:
Level accuracy:
Pickup delay:
Operate time:
Timing accuracy:
NEUTRAL OVERVOLTAGE
Pickup level:
Dropout level:
Level accuracy:
Pickup delay:
Reset delay:
Timing accuracy:
Operate time:
AUXILIARY OVERVOLTAGE
Pickup level:
Dropout level:
Level accuracy:
Pickup delay:
Reset delay:
Timing accuracy:
Operate time:
BREAKER FAILURE
Mode:
Current supervision:
Current supv. pickup:
Current supv. dropout:
Current supv. accuracy:
0.1 to 2.0 × CT rating: ±0.75% of reading or ±2% of rated
above 2 × CT rating:
2 PRODUCT DESCRIPTION
Phasor only
0.000 to 3.000 pu in steps of 0.001
102 to 103% of Pickup
±0.5% of reading from 10 to 208 V
GE IAV Inverse;
Definite Time (0.1s base curve)
Time Dial = 0.00 to 600.00 in steps of
0.01
Operate at < 0.90 × Pickup
±3.5% of operate time or ±4 ms (which-
ever is greater)
0.000 to 3.000 pu in steps of 0.001
102 to 103% of pickup
±0.5% of reading from 10 to 208 V
GE IAV Inverse, Definite Time
Time Dial = 0 to 600.00 in steps of 0.01
±3% of operate time or ±4 ms
(whichever is greater)
Phasor only
0.000 to 3.000 pu in steps of 0.001
97 to 98% of Pickup
±0.5% of reading from 10 to 208 V
0.00 to 600.00 in steps of 0.01 s
< 30 ms at 1.10 × Pickup at 60 Hz
±3% or ±4 ms (whichever is greater)
0.000 to 1.250 pu in steps of 0.001
97 to 98% of Pickup
±0.5% of reading from 10 to 208 V
0.00 to 600.00 s in steps of 0.01
0.00 to 600.00 s in steps of 0.01
±3% or ±4 ms (whichever is greater)
< 30 ms at 1.10 × Pickup at 60 Hz
0.000 to 3.000 pu in steps of 0.001
97 to 98% of Pickup
±0.5% of reading from 10 to 208 V
0 to 600.00 s in steps of 0.01
0 to 600.00 s in steps of 0.01
±3% of operate time or ±4 ms
(whichever is greater)
< 30 ms at 1.10 × pickup at 60 Hz
1-pole, 3-pole
phase, neutral current
0.001 to 30.000 pu in steps of 0.001
97 to 98% of pickup
(whichever is greater)
±2.5% of reading
GE Multilin