SEMOD173242-2 v14
Table 45. Full-scheme distance protection, Mho characteristic ZMHPDIS
Function
Range or value
Accuracy
Number of zones, Ph-E
Max 5 with selectable direction
-
Minimum operate current
(10–30)% of IBase
-
Positive sequence impedance,
Ph-E loop
(0.005–3000.000)
W
/phase
±2.0% static accuracy
Conditions:
Voltage range: (0.1-1.1) x U
r
Current range: (0.5-30) x I
r
Angle: 85 degrees
Positive sequence impedance
angle, Ph-E loop
(10–90) degrees
Reverse reach, Ph-E loop
(Magnitude)
(0.005–3000.000) Ω/phase
Magnitude of earth return
compensation factor KN
(0.00–3.00)
Angle for earth compensation
factor KN
(-180–180) degrees
Dynamic overreach
<5% at 85 degrees measured
with CVT’s and 0.5<SIR<30
-
Definite time delay Ph-Ph and
Ph-E operation
(0.000-60.000) s
±0.2% or ±60 ms whichever is greater
Operate time
22 ms typically
IEC 60255-121
Reset ratio
105% typically
-
Reset time at 0.5 x Zreach to 1.5
x Zreach
Min. = 30 ms
Max. = 50 ms
-
SEMOD173249-2 v8
Table 46. Full-scheme distance protection, quadrilateral for earth faults ZMMPDIS
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 U
r
Current range: (0.5-30) x I
r
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, Ph-E
(1.00-9000.00)
W
/loop
Dynamic overreach
<5% at 85 degrees measured
with CCVT’s and 0.5<SIR<30
-
Definite time delay Ph-Ph and
Ph-E 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
92
Hitachi Energy
© 2017 - 2022 Hitachi Energy. All rights reserved
Содержание Relion 670 Series
Страница 1: ...Relion 670 SERIES Line differential protection RED670 Version 2 2 Product guide ...
Страница 191: ...191 ...