ABB RELION REB500 Technical Manual page 39

1MRK 505 406-UEN B
Text
Delay(n)
X(BACK)
R(BACK)
RR(BACK)
RRE(BACK)
IEC19000404 V1 EN-US
Figure 3:
Bay protection functions REB500
Technical manual
Explanation
Operating time for Zone (n).
Pick-up line reactance for the reverse zone:
X = 0 Zone disabled.
Pick-up line resistance for the reverse zone.
Resistive reach for phase faults in the reverse zone.
Resistive reach for ground faults in the reverse zone.
X
27°
X(n)
R(n)
- X(n)/8
- RR(n)/2
- RRE(n)/2
Distance measurement settings
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7°
14°
RR(n) RRE(n)
27°
18000002--1-en.vsdx
Bay protection functions
R
Section 5
33