Specifications; Protection Elements - GE L30 Instruction Manual

2.4 SPECIFICATIONS

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
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)
2
Application:
Characteristic:
Pickup current level:
CT Tap (CT mismatch factor): 0.20 to 5.00 in steps of 0.01
Slope # 1:
Slope # 2:
Breakpoint between slopes: 0.0 to 20.0 pu in steps of 0.1
Level accuracy:
DTT:
Operating Time:
Asymmetrical channel delay compensation using GPS:
In-zone transformer group compensation: 0 to 330° in steps of 30°
Inrush inhibit level:
Inrush inhibit mode:
Zero-sequence current differential (87LG):
87LG pickup level:
87LG slope:
87LG pickup delay:
87LG operate time:
PHASE/NEUTRAL/GROUND TOC
Current:
Pickup level:
Dropout level:
Level accuracy:
0.1 to 2.0 × CT:
> 2.0 × CT:
Curve shapes:
Curve multiplier:
Reset type:
Timing accuracy:
Voltage restraint:
2-18
2 or 3 terminal line, series compensated
line, tapped line, with charging current
compensation
Dual slope percent differential
0.20 to 4.00 pu in steps of 0.01
1 to 50%
1 to 70%
±3% of reading of the maximum circuit
current
Direct Transfer Trip (1 and 3 pole) to
remote L90
1.0 to 1.5 power cycles duration
asymmetry up to 10 ms
1.0 to 40.0%f in steps of 0.1
0
per-phase, 2-out-of-3, average
0.05 to 1.00 pu in steps of 0.01
1 to 50%
0.00 to 5.00 s in steps of 0.01
1.5 to 2.5 cycles
Phasor or RMS
0.000 to 30.000 pu in steps of 0.001
97% to 98% of pickup
±0.5% of reading or ±0.4% of rated
(whichever is greater)
±1.5% of reading > 2.0 × CT rating
IEEE Moderately/Very/Extremely
Inverse; IEC (and BS) A/B/C and Short
Inverse; GE IAC Inverse, Short/Very/
2
Extremely Inverse; I t; FlexCurves™
(programmable); Definite Time (0.01 s
base curve)
Time Dial = 0.00 to 600.00 in steps of
0.01
Instantaneous/Timed (per IEEE)
Operate at > 1.03 × actual pickup
±3.5% of operate time or ±½ cycle
(whichever is greater)
Modifies pickup current for voltage in
the range of 0.1<V<0.9 VT Nominal in a
fixed linear relationship
L30 Line Current Differential System
2 PRODUCT DESCRIPTION

2.4.1 PROTECTION ELEMENTS

PHASE/NEUTRAL/GROUND IOC
Pickup level: 0.000 to 30.000 pu in steps of 0.001
Dropout level: 97 to 98% of pickup
Level accuracy:
0.1 to 2.0 × CT rating: ±0.5% of reading or ±0.4% of rated
(whichever is greater)
> 2.0 × CT rating
±1.5% of reading
Overreach: <2%
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
Operate time: <16 ms at 3 × pickup at 60 Hz
(Phase/Ground IOC)
<20 ms at 3 × pickup at 60 Hz
(Neutral IOC)
Operate at 1.5 × pickup
Timing accuracy:
±3% or ±4 ms (whichever is greater)
NEGATIVE SEQUENCE TOC
Current: Phasor
Pickup level: 0.000 to 30.000 pu in steps of 0.001
Dropout level: 97% to 98% of pickup
Level accuracy: ±0.5% of reading or ±0.4% of rated
(whichever is greater)
from 0.1 to 2.0 x CT rating
±1.5% of reading > 2.0 x CT rating
Curve shapes: IEEE Moderately/Very/Extremely
Inverse; IEC (and BS) A/B/C and Short
Inverse; GE IAC Inverse, Short/Very/
Extremely Inverse; I
(programmable); Definite Time (0.01 s
base curve)
Curve multiplier (Time dial): 0.00 to 600.00 in steps of 0.01
Reset type: Instantaneous/Timed (per IEEE) and Lin-
ear
Operate at > 1.03 × actual pickup
Timing accuracy:
±3.5% of operate time or ±½ cycle
(whichever is greater)
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
Operate time: < 20 ms at 3 × pickup at 60 Hz
Operate at 1.5 × pickup
Timing accuracy:
±3% or ±4 ms (whichever is greater)
2
t; FlexCurves™
GE Multilin