ABB RET670 - Page 131

X1
R
X
(O/phase)
50%
80%
1
2
3
4
5
6
7
8
9
10
11
80% of RLdFwd
40% of RLdFwd
0.5 x RFPP
12
ANSI05000368-1-en.vsd
13
b
120°
20°
a
c
ANSI05000368 V1 EN
Figure 29: Distance protection characteristic with test points for phase-to-phase
measurements
Table 24 is used in conjunction with figure 29.
50%
80%
1
2
3
4
5
6
7
8
9
10
11
80% of RLdFwd
40% of RLdFwd
RFPG
12
ANSI05000369-2-en.vsd
13
a
alt. 80% of
RFPG (Load
encroachment)
120°
20°
ANSI05000369 V2 EN
Figure 30: Distance protection characteristic with test points for phase-to-ground
measurements
Table 25 is used in conjunction with figure 30.
1MRK 504 165-UUS - Section 11
Testing functionality by secondary injection
Transformer protection RET670 2.2 ANSI 125
Commissioning manual