Name Values (Range) Unit Step Default Description
RFPG 1.00 - 9000.00 ohm/l 0.01 100.00 Fault resistance reach in ohm/loop, Ph-G
Timer tPG Disabled
Enabled
- - Enabled Operation mode Disable/ Enable of Zone
timer, Ph-G
tPG 0.000 - 60.000 s 0.001 0.000 Time delay of trip, Ph-G
IMinPUPG 10 - 30 %IB 1 20 Minimum pickup phase current for Phase-to-
ground loops
6.5.6 Technical data
Table 129: ZMMPDIS (21) technical data
Function Range or value Accuracy
Number of zones Max 5 with selectable direction -
Minimum operate current (10-30)% of
IBase
-
Positive sequence reactance (0.50-3000.00) W/phase ± 2.0% static accuracy
± 2.0 degrees static angular
accuracy
Conditions:
Voltage range: (0.1-1.1) x V
n
Current range: (0.5-30) x I
n
Angle: at 0 degrees and 85
degrees
Positive sequence resistance (0.10-1000.00) Ω/phase
Zero sequence reactance (0.50-9000.00) Ω/phase
Zero sequence resistance (0.50-3000.00) Ω/phase
Fault resistance, phase-ground (1.00-9000.00) W/loop
Dynamic overreach <5% at 85 degrees measured
with CCVT’s and 0.5<SIR<30
-
Impedance zone timers (0.000-60.000) s ± 0.5% ± 10 ms
Operate time 24 ms typically -
Reset ratio 105% typically -
Reset time 30 ms typically -
6.6 Directional impedance element for mho characteristic
and additional distance protection directional function
for earth faults ZDMRDIR (21D), ZDARDIR
Function description
IEC 61850
identification
IEC 60617
identification
ANSI/IEEE C37.2
device number
Directional impedance element for mho
characteristic
ZDMRDIR
S00346 V1 EN
21D
Section 6 1MRK505222-UUS C
Impedance protection
276
Technical reference manual
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