SEMOD153649-2 v8
Table 47. Faulty phase identification with load encroachment FMPSPDIS
Function
Range or value
Accuracy
Load encroachment criteria:
Load resistance, forward and
reverse
(1.00–3000.00)
W
/
phase
(5–70) degrees
±2.0% static accuracy
Conditions:
Voltage range: (0.1–1.1) x U
r
Current range: (0.5–30) x I
r
Angle: at 0 degrees and 85 degrees
GUID-7617A215-AE7C-47CC-B189-4914F530F717 v8
Table 48. Distance measuring zone, quadrilateral characteristic, separate settings ZMRPDIS, ZMRAPDIS
Function
Range or value
Accuracy
Number of zones
Max 5 with selectable
direction
-
Minimum operate residual
current, zone 1
(5-1000)% of IBase
-
Minimum operate current, phase-
to-phase and phase-to-earth
(10-1000)% of IBase
-
Positive sequence reactance
(0.10-3000.00) Ω/
phase
±2.0% static accuracy
±2.0 degrees static angular accuracy
Conditions:
Voltage range: (0.1-1.1) x U
r
Current range: (0.5-30) x I
r
Angle: at 0 degrees and 85 degrees
Positive sequence resistance
(0.01-1000.00) Ω/
phase
Zero sequence reactance
(0.10-9000.00) Ω/
phase
Zero sequence resistance
(0.01-3000.00) Ω/
phase
Fault resistance, phase-to-earth
(0.10-9000.00) Ω/loop
Fault resistance, phase-to-phase
(0.10-3000.00) Ω/loop
Dynamic overreach
<5% at 85 degrees
measured with CVT’s
and 0.5<SIR<30
-
Definite time delay phase-phase
and phase-earth operation
(0.000-60.000) s
±0.2% or ±40 ms whichever is greater
Operate time
25 ms typically
IEC 60255-121
Reset ratio
105% typically
-
Reset time at 0.1 x Zreach to 2 x
Zreach
Min. = 20 ms
Max. =50 ms
-
Line differential protection RED670
1MRK 505 379-BEN R
Version 2.2
Hitachi Energy
93
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