Technical Data; Directional Impedance Element For Mho Characteristic And Additional Distance Protection Directional Function For Earth Faults Zdmrdir (21D), Zdardir - ABB Relion 670 Series Technical Reference Manual

Section 6
Impedance protection
Name Values (Range)
RFPG 1.00 - 9000.00
Timer tPG Disabled
Enabled
tPG 0.000 - 60.000
IMinPUPG 10 - 30
6.5.6
6.6
276
Unit Step
ohm/l 0.01
- -
s 0.001
%IB 1

Technical data

Table 129: ZMMPDIS (21) technical data
Function
Number of zones
Minimum operate current
Positive sequence reactance
Positive sequence resistance
Zero sequence reactance
Zero sequence resistance
Fault resistance, phase-ground
Dynamic overreach
Impedance zone timers
Operate time
Reset ratio
Reset time
Directional impedance element for mho characteristic
and additional distance protection directional function
for earth faults ZDMRDIR (21D), ZDARDIR
Function description
Directional impedance element for mho
characteristic
Default Description
100.00 Fault resistance reach in ohm/loop, Ph-G
Enabled Operation mode Disable/ Enable of Zone
timer, Ph-G
0.000 Time delay of trip, Ph-G
20 Minimum pickup phase current for Phase-to-
ground loops
Range or value
Max 5 with selectable direction
IBase
(10-30)% of
(0.50-3000.00) W/phase
(0.10-1000.00) Ω/phase
(0.50-9000.00) Ω/phase
(0.50-3000.00) Ω/phase
(1.00-9000.00) W/loop
<5% at 85 degrees measured
with CCVT's and 0.5<SIR<30
(0.000-60.000) s
24 ms typically
105% typically
30 ms typically
IEC 61850 IEC 60617
identification identification
ZDMRDIR
1MRK505222-UUS C
Accuracy
-
-
± 2.0% static accuracy
± 2.0 degrees static angular
accuracy
Conditions:
Voltage range: (0.1-1.1) x V
Current range: (0.5-30) x I
Angle: at 0 degrees and 85
degrees
-
± 0.5% ± 10 ms
-
-
-
ANSI/IEEE C37.2
device number
21D
S00346 V1 EN
Technical reference manual
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