GE D60 Instruction Manual page 43

2 PRODUCT DESCRIPTION
GROUND DISTANCE
Characteristic: Mho (memory polarized or offset) or
Quad (memory polarized or non-direc-
tional), selectable individually per zone
Reactance polarization: negative-sequence or zero-sequence
current
Non-homogeneity angle: –40 to 40° in steps of 1
Number of zones: 5
Directionality: forward, reverse, or non-directional per
zone
Reach (secondary Ω): 0.02 to 500.00 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
Zero-sequence compensation
Z0/Z1 magnitude: 0.00 to 10.00 in steps of 0.01
Z0/Z1 angle: –90 to 90° in steps of 1
Zero-sequence mutual compensation
Z0M/Z1 magnitude: 0.00 to 7.00 in steps of 0.01
Z0M/Z1 angle: –90 to 90° in steps of 1
Right blinder (Quad only):
0.02 to 500 Ω in steps of 0.01
Reach:
Characteristic angle: 60 to 90° in steps of 1
Left blinder (Quad only):
0.02 to 500 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
Current supervision:
Level: neutral current (3I_0)
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
Voltage supervision pickup (series compensation applications):
0 to 5.000 pu in steps of 0.001
GE Multilin
GROUND DISTANCE OPERATING TIME CURVES
The operating times are response times of a microprocessor part
of the relay. See output contacts specifications for estimation of
the total response time for a particular application. The operating
times are average times including variables such as fault inception
angle or type of a voltage source (magnetic VTs and CVTs).
35
30
25
20
15
10
5
0
0%
LINE PICKUP
Phase instantaneous overcurrent: 0.000 to 30.000 pu
Undervoltage pickup:
Overvoltage delay:
PHASE/NEUTRAL/GROUND TOC
Current:
Pickup level:
Dropout level:
Level accuracy:
for 0.1 to 2.0 × CT:
for > 2.0 × CT:
Curve shapes:
Curve multiplier:
Reset type:
Timing accuracy:
D60 Line Distance Protection System
2.2 SPECIFICATIONS
Ground Element (21G)
10% 20% 30% 40% 50% 60%
Fault Location [%]
0.000 to 3.000 pu
0.000 to 65.535 s
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/
Extremely Inverse; I
(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)
2
SIR = 0.1
SIR = 1
SIR = 10
SIR = 20
SIR = 30
70% 80%
837718A1.CDR
2
t; FlexCurves™
2-11