Impedance protection
Table 32. Distance measuring zone, Quad ZMQPDIS
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 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 to 2 x Zreach
Min. = 20 ms
Max. = 35 ms
-
1MRK 505 346-BEN -
Line differential protection RED670 2.1 IEC
Product version: 2.1
ABB
59
