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Technical Specifications; Protection Elements - GE UR Series Instruction Manual

Line differential relay.
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2 PRODUCT DESCRIPTION

2.6 TECHNICAL SPECIFICATIONS

SPECIFICATIONS ARE SUBJECT TO CHANGE WITHOUT NOTICE
The operating times below include the activation time of a trip rated Form-A output contact unless otherwise indi-
cated. FlexLogic™ operands of a given element are 4 ms faster. This should be taken into account when using
NOTE
FlexLogic™ to interconnect with other protection or control elements of the relay, building FlexLogic™ equations, or
interfacing with other IEDs or power system devices via communications or different output contacts.
LINE CURRENT DIFFERENTIAL (87L)
Application:
2 or 3 terminal line, series compensated
line, tapped line, with charging current
compensation
Pickup Current Level:
0.20 to 4.00 pu in steps of 0.01
CT Tap (CT mismatch factor): 0.20 to 5.00 in steps of 0.01
Slope # 1:
1 to 50%
Slope # 2:
1 to 70%
Breakpoint between Slopes: 0.0 to 20.0 pu in steps of 0.1
DTT:
Direct Transfer Trip (1 and 3 pole) to
remote L90
Operating Time:
1.0 to 1.5 power cycles duration
LINE CURRENT DIFFERENTIAL TRIP LOGIC
87L Trip:
Adds security for trip decision; creates 1
& 3 pole trip logic
DTT:
Enables Direct Transfer Trip (1 and 3
pole) from remote L90
DD:
Sensitive Disturbance Detector to detect
fault occurrence
Stub Bus Protection:
Security for ring bus and 1½ breaker
configurations
Open Pole Detector:
Security for sequential and evolving
faults
PHASE DISTANCE
Characteristic:
Dynamic (100% memory-polarized)
MHO or QUAD
Number of Zones:
1
Directionality:
reversible
Reach (secondary Ω):
0.02 to 250.00 Ω in steps of 0.01
Reach Accuracy:
±5% including the effect of CVT tran-
sients up to an SIR of 30
Distance Characteristic Angle: 30 to 90° in steps of 1
Distance Comparator Limit Angle: 30 to 90° in steps of 1
Directional Supervision:
Characteristic Angle:
30 to 90° in steps of 1
Limit Angle:
30 to 90° in steps of 1
Right Blinder (QUAD only):
0.02 to 250 Ω in steps of 0.01
Reach:
Characteristic Angle:
60 to 90° in steps of 1
Left Blinder (QUAD only):
0.02 to 250 Ω in steps of 0.01
Reach:
Characteristic Angle:
60 to 90° in steps of 1
Time Delay:
0.000 to 65.535 s in steps of 0.001
Timing Accuracy:
±3% or 4 ms, whichever is greater
GE Power Management
Current Supervision:
Level:
Pickup:
Dropout:
Memory Duration:
Voltage Supervision Pickup (series compensation applications):
Operation Time:
Reset Time:
GROUND DISTANCE
Characteristic:
Number of Zones:
Directionality:
Reach (secondary Ω):
Reach Accuracy:
Distance Characteristic Angle: 30 to 90° in steps of 1
Distance Comparator Limit Angle: 30 to 90° in steps of 1
Directional Supervision:
Characteristic Angle:
Limit Angle:
Zero-Sequence Compensation
Z0/Z1 magnitude:
Z0/Z1 angle:
Zero-Sequence Mutual Compensation
Z0M/Z1 magnitude:
Z0M/Z1 angle:
Right Blinder (QUAD only):
Reach:
Characteristic Angle:
Left Blinder (QUAD only):
Reach:
Characteristic Angle:
Time Delay:
Timing Accuracy:
Current Supervision:
Level:
Pickup:
Dropout:
Memory Duration:
Voltage Supervision Pickup (series compensation applications):
Operation Time:
Reset Time:
L90 Line Differential Relay
2.6 TECHNICAL SPECIFICATIONS

2.6.1 PROTECTION ELEMENTS

line-to-line current
0.050 to 30.000 pu in steps of 0.001
97 to 98%
5 to 25 cycles in steps of 1
0 to 5.000 pu in steps of 0.001
1 to 1.5 cycles (typical)
1 power cycle (typical)
Dynamic (100% memory-polarized)
MHO, or QUAD
1
reversible
0.02 to 250.00 Ω in steps of 0.01
±5% including the effect of CVT tran-
sients up to an SIR of 30
30 to 90° in steps of 1
30 to 90° in steps of 1
0.50 to 7.00 in steps of 0.01
–90 to 90° in steps of 1
0.00 to 7.00 in steps of 0.01
–90 to 90° in steps of 1
0.02 to 250 Ω in steps of 0.01
60 to 90° in steps of 1
0.02 to 250 Ω in steps of 0.01
60 to 90° in steps of 1
0.000 to 65.535 s in steps of 0.001
±3% or 4 ms, whichever is greater
neutral current (3I_0)
0.050 to 30.000 pu in steps of 0.001
97 to 98%
5 to 25 cycles in steps of 1
0 to 5.000 pu in steps of 0.001
1 to 1.5 cycles (typical)
1 power cycle (typical)
2
2-13

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L90

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