ABB RED670 - Page 131

X1Zx
X
R (Ohm/phase)
50%
80%
1
2
3
4
5
6
7
8
9
10
11
80% of RLdFw
40% of RLdFw
12
13
120°
20°
a
c
IEC05000368-4-en.vsdx
0.5 x RFPPZx
IEC05000368 V4 EN-US
Figure 29: Distance protection characteristic with test points for phase-to-
phase measurements
Table
26 is used in conjunction with figure 29.
X1Zx+XNZx
X
R (Ohm/loop)
50%
80%
1
2
3
4
5
6
7
8
9
10
11
80% of RLdFw
40% of RLdFw
RFPEZx
12
13
alt. 80% of
RFPEZx (Load
encroachment)
120°
20°
a
IEC05000369-4-en.vsdx
IEC05000369 V4 EN-US
Figure 30: Distance protection characteristic with test points for phase-to-
earth measurements
Table
27 is used in conjunction with figure 30.
1MRK 505 378-UEN A Section 11
Testing functionality by secondary injection
Line differential protection RED670 2.2 IEC 125
Commissioning manual