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
Содержание Relion 670 series
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