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GE UR Series Instruction Manual Page 37

Line differential relay.
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2 PRODUCT DESCRIPTION
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)
PHASE OVERVOLTAGE
Voltage:
Phasor only
Pickup Level:
0.000 to 3.000 pu in steps of 0.001
Dropout Level:
97 to 98% of Pickup
Level Accuracy:
±0.5% of reading from 10 to 208 V
Pickup Delay:
0.00 to 600.00 in steps of 0.01 s
< 30 ms at 1.10 × Pickup at 60 Hz
Operate Time:
Timing Accuracy:
±3% or ±4 ms (whichever is greater)
NEUTRAL OVERVOLTAGE
Pickup Level:
0.000 to 1.250 pu in steps of 0.001
Dropout Level:
97 to 98% of Pickup
Level Accuracy:
±0.5% of reading from 10 to 208 V
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
Timing Accuracy:
±3% or ±4 ms (whichever is greater)
< 30 ms at 1.10 × Pickup at 60 Hz
Operate Time:
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)
AUXILIARY OVERVOLTAGE
Pickup Level:
0.000 to 3.000 pu in steps of 0.001
Dropout Level:
97 to 98% of Pickup
Level Accuracy:
±0.5% of reading from 10 to 208 V
Pickup Delay:
0 to 600.00 s in steps of 0.01
Reset Delay:
0 to 600.00 s in steps of 0.01
Timing Accuracy:
±3% of operate time or ±4 ms
(whichever is greater)
< 30 ms at 1.10 × pickup at 60 Hz
Operate Time:
GE Power Management
LINE PICKUP
Phase IOC:
Positive Sequence UV:
Positive Seq. OV Delay: 0.000 to 65.535 s
SYNCHROCHECK
Max Volt Difference:
Max Angle Difference:
Max Freq Difference:
Dead Source Function: None, LV1 & DV2, DV1 & LV2, DV1 or
AUTORECLOSURE
Single breaker applications, 3-pole tripping schemes.
Up to 4 reclose attempts before lockout.
Independent dead time setting before each shot.
Possibility of changing protection settings after each shot with
POWER SWING DETECT
Functions:
Measured Impedance:
Blocking & Tripping Modes: 2-step or 3-step
Tripping Mode:
Current Supervision:
Pickup Level:
Dropout Level:
Fwd / Reverse Reach (sec. Ω): 0.10 to 500.00 Ω in steps of 0.01
Impedance Accuracy:
Fwd / Reverse Angle Impedances: 40 to 90° in steps of 1
Angle Accuracy:
Characteristic Limit Angles: 40 to 140° in steps of 1
Timers:
Timing Accuracy:
LOAD ENCROACHMENT
Measured Impedance:
Minumum Voltage:
Reach (sec. Ω):
Impedance Accuracy:
Angle:
Angle Accuracy:
Pickup Delay:
Reset Delay:
Time Accuracy:
Operate Time:
L90 Line Differential Relay
2.6 TECHNICAL SPECIFICATIONS
0.000 to 30.000 pu
0.000 to 3.000 pu
0 to 100000 V in steps of 1
°
0 to 100
in steps of 1
0.00 to 2.00 Hz in steps of 0.01
DV2, DV1 xor DV2, DV1 & DV2 (L=Live,
D=Dead)
FlexLogic™.
Power swing block, Out-of-step trip
Positive-sequence
Early or Delayed
0.050 to 30.000 pu in steps of 0.001
97 to 98% of Pickup
±5%
±2°
0.000 to 65.535 s in steps of 0.001
±3% or 4 ms, whichever is greater
Positive-sequence
0.000 to 3.000 pu in steps of 0.001
0.02 to 250.00 Ω in steps of 0.01
±5%
5 to 50° in steps of 1
±2°
0 to 65.535 s in steps of 0.001
0 to 65.535 s in steps of 0.001
±3% or ±4 ms, whichever is greater
< 30 ms at 60 Hz
2
2-15

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L90

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