Specifications; Protection Elements - GE L90 Instruction Manual

2 PRODUCT DESCRIPTION

2.4SPECIFICATIONS

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
FlexLogic™ to interconnect with other protection or control elements of the relay, building FlexLogic™ equations, or
NOTE
interfacing with other IEDs or power system devices via communications or different output contacts.
PHASE DISTANCE
Characteristic: mho (memory polarized or offset) or
quad (memory polarized or non-direc-
tional), selectable individually per zone
Number of zones: 3
Directionality: forward, reverse, or non-directional
Reach (secondary ): 0.02 to 500.00
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
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):
Reach: 0.02 to 500
Characteristic angle: 60 to 90° in steps of 1
Left Blinder (Quad only):
Reach: 0.02 to 500
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
Current supervision:
Level: line-to-line current
Pickup: 0.050 to 30.000 pu in steps of 0.001
Dropout: 97 to 98%
Memory duration: 5 to 25 cycles in steps of 1
VT location: all delta-wye and wye-delta transformers
CT location: all delta-wye and wye-delta transformers
Voltage supervision pickup (series compensation applications):
0 to 5.000 pu in steps of 0.001
Operation time: 1 to 1.5 cycles (typical)
Reset time: 1 power cycle (typical)
GE Multilin
GROUND DISTANCE
Characteristic:
Reactance polarization: negative-sequence or zero-sequence
Non-homogeneity angle: –40 to 40° in steps of 1
in steps of 0.01
Number of zones:
Directionality:
Reach (secondary
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:
in steps of 0.01
Zero-sequence compensation
in steps of 0.01
Zero-sequence mutual compensation
Right blinder (Quad only):
Left blinder (Quad only):
Time delay:
Timing accuracy:
Current supervision:
Memory duration:
Voltage supervision pickup (series compensation applications):
Operation time:
Reset time:
LINE PICKUP
Phase instantaneous overcurrent: 0.000 to 30.000 pu
Undervoltage pickup:
Overvoltage delay:
L90 Line Current Differential System

2.4.1 PROTECTION ELEMENTS

Mho (memory polarized or offset) or
Quad (memory polarized or non-direc-
tional)
current
3
forward, reverse, or non-directional
): 0.02 to 500.00
±5% including the effect of CVT tran-
sients up to an SIR of 30
Characteristic angle: 30 to 90° in steps of 1
Limit angle: 30 to 90° in steps of 1
Z0/Z1 magnitude: 0.00 to 10.00 in steps of 0.01
Z0/Z1 angle: –90 to 90° in steps of 1
Z0M/Z1 magnitude: 0.00 to 7.00 in steps of 0.01
Z0M/Z1 angle: –90 to 90° in steps of 1
Reach: 0.02 to 500
Characteristic angle: 60 to 90° in steps of 1
Reach: 0.02 to 500
Characteristic angle: 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
Level: neutral current (3I_0)
Pickup: 0.050 to 30.000 pu in steps of 0.001
Dropout: 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)
0.000 to 3.000 pu
0.000 to 65.535 s
2.4 SPECIFICATIONS
2
in steps of 0.01
in steps of 0.01
in steps of 0.01
2-17