Specifications; Protection Elements - GE L30 Instruction Manual

2.5 SPECIFICATIONS

2.5SPECIFICATIONS
The operating times include the activation time of a trip rated form-A output contact unless otherwise indicated.
FlexLogic operands of a given element are 4 ms faster. Take this into account when using FlexLogic to interconnect
with other protection or control elements of the relay, building FlexLogic equations, or interfacing with other IEDs or
NOTE
power system devices via communications or different output contacts. If not specified, the operate times given
here are for a 60 Hz system at nominal system frequency. Operate times for a 50 Hz system are 1.2 times longer.
2
LINE CURRENT DIFFERENTIAL (87L)
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:
Curve timing accuracy
at 1.03 to 20 x pickup:
Voltage restraint:
2-24
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)
±3.5% of operate time or ±½ cycle
(whichever is greater) from pickup to
operate
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

2.5.1 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)
Timer accuracy: ±3% of operate time or ±1/4 cycle
(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
Curve timing accuracy
at 1.03 to 20 x pickup: ±3.5% of operate time or ±½ cycle
(whichever is greater) from pickup to
operate
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
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: <20 ms at 3 × pickup at 60 Hz
Timer accuracy: ±3% of operate time or ±1/4 cycle
(whichever is greater)
2
t; FlexCurves™
GE Multilin