ABB REF630 - Distance Protection (DSTPDIS)

Table 69. Distance protection (DSTPDIS)
Characteristic Value
Operation accuracy At the frequency f = f
n
Current:
±1.5% of the set value or ±0.002 x I
n
Voltage:
±1.5% of the set value or ±0.002 x U
n
Impedance:
±2.0% static accuracy
Phase angle: ±2°
Start time
1)2)
SIR
3)
: 0.1–60
Typical 50 ms (±15 ms)
Transient overreach SIR = 0.1 – 60 < 6%
Reset time < 50 ms
Reset ratio Typical 0.96
Operate time accuracy in definite time mode ±1.0% of the set value or ±20 ms
1) Includes the delay of the signal output contact
2) Relates to start signals of the Zone Z1–Zone ZAR2
3) SIR = Source impedance ratio
Feeder Protection and Control 1MRS756380 A
REF630
Product version: 1.0 Issued: 15.09.2009
48 ABB