Table of Contents
Line distance protection REL670
Version 2.2
Table 40. Full-scheme distance protection, Mho characteristic ZMHPDIS
Function
Number of zones, Ph-E
Minimum operate current
Positive sequence impedance,
Ph-E loop
Positive sequence impedance
angle, Ph-E loop
Reverse reach, Ph-E loop
(Magnitude)
Magnitude of earth return
compensation factor KN
Angle for earth compensation
factor KN
Dynamic overreach
Definite time delay Ph-Ph and
Ph-E operation
Operate time
Reset ratio
Reset time at 0.5 x Zreach to 1.5
x Zreach
Table 41. Full-scheme distance protection, quadrilateral for earth faults ZMMPDIS
Function
Number of zones
Minimum operate current
Positive sequence reactance
Positive sequence resistance
Zero sequence reactance
Zero sequence resistance
Fault resistance, Ph-E
Dynamic overreach
Definite time delay Ph-Ph and
Ph-E operation
Operate time
Reset ratio
Reset time at 0.1 x Zreach to 2 x
Zreach
82
SEMOD173242-2 v14
Range or value
Max 5 with selectable direction
(10–30)% of IBase
(0.005–3000.000) W/phase
(10–90) degrees
(0.005–3000.000) Ω/phase
(0.00–3.00)
(-180–180) degrees
<5% at 85 degrees measured
with CVT's and 0.5
(0.000-60.000) s
22 ms typically
105% typically
Min. = 30 ms
Max. = 50 ms
SEMOD173249-2 v8
Range or value
Max 5 with selectable direction
(10-30)% of IBase
(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
(0.000-60.000) s
25 ms typically
105% typically
Min. = 20 ms
Max. = 50 ms
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Accuracy
-
-
±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
-
±0.2% or ±60 ms whichever is greater
IEC 60255-121
-
-
Accuracy
-
-
±2.0% static accuracy
±2.0 degrees static angular accuracy
Conditions:
Voltage range: (0.1-1.1) x U
Current range: (0.5-30) x I
r
Angle: at 0 degrees and 85 degrees
-
±0.2% or ±40 ms whichever is greater
IEC 60255-121
-
-
1MRK 506 372-BEN Q
r
Hitachi Energy
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