GE D30 Instruction Manual page 50

2.4 SPECIFICATIONS
GROUND DISTANCE
Characteristic:
Reactance polarization: negative-sequence or zero-sequence
Non-homogeneity angle: –40 to 40° in steps of 1
2
Number of zones:
Directionality:
Reach (secondary Ω):
Reach accuracy:
Zone 1:
Zones 2 to 5:
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:
Timer accuracy:
Current supervision:
Level:
Pickup:
Dropout:
Memory duration:
Voltage supervision pickup (series compensation applications):
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
2-18
Mho (memory polarized or offset) or
Quad (memory polarized or non-direc-
tional), selectable individually per zone
current
5
forward, reverse, or non-directional per
zone
0.02 to 500.00 Ω in steps of 0.01
±5% including the effect of CVT tran-
sients up to an SIR of 30 and ±7% for
30<SIR< 60 at RCA angle
±5% for steady fault conditions
30 to 90° in steps of 1
30 to 90° in steps of 1
0.00 to 10.00 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 500 Ω in steps of 0.01
60 to 90° in steps of 1
0.02 to 500 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% of operate time or ±1/4 cycle
(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
D30 Line Distance Protection System
2 PRODUCT DESCRIPTION
angle or type of a voltage source (magnetic VTs and CVTs). The
figure shows zone 1 ground distance time curves for a 60 Hz sys-
tem at nominal system frequency.
LINE PICKUP
Phase instantaneous overcurrent: 0.000 to 30.000 pu
Undervoltage pickup: 0.000 to 3.000 pu
Overvoltage delay: 0.000 to 65.535 s
PHASE/NEUTRAL/GROUND TOC
Current: Phasor or RMS
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:
±0.5% of reading or ±0.4% of rated
(whichever is greater)
> 2.0 × CT: ±1.5% of reading > 2.0 × 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)
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
Voltage restraint: modifies pickup current for voltage in the
range of 0.1<V<0.9 VT Nominal in a
fixed linear relationship
2
t; FlexCurves™
GE Multilin