ABB RET670 Commissioning Manual page 112

Section 10
Testing functionality by secondary injection
Test point
5
6
7
8
9
10
11
12
13
Table 29
40% of RLdFwd
80% of RLdFwd
encroachment)
ANSI05000369 V2 EN-US
Figure 27: Distance protection characteristic with test points for phase-to-ground
Table 30
106
Reach Set value
X 0.85 x RFPP x tan (LdAngle)
R 0.85 x RFPP
X RLdFwd x tan (LdAngle)
R RLdFwd
X RLdFwd x tan (LdAngle)
R 0
X –0.2143 x RFPP/2
R 0.8 x RFPP/2
X –0.4 x RLdFwd x tan(ArgDir=20°)
R 0.4 x RLdFwd
X 0.5 x X1
set
R –0.23 x X1
set
X 0.8 x X1
set
R –0.37 x X1
set
X 0.5 x X1
set
R 0.5 x R1
set
X 0
R 0.5 x RFPP
is used in conjunction with figure 26.
2
1
11
10
12
120°
a
9
8
alt. 80% of
RFPG
RFPG (Load
measurements
is used in conjunction with figure 27.
Comments
LdAngle = angle for the maximal load transfer
Exact: 0.8 x RFPP/2 (ArgDir=20°)
Exact –0.5 x R1
Exact –0.5 x R1
80%
3
50%
4
5
6
7
13
20°
ANSI05000369-2-en.vsd
1MRK 504 154-UUS B
x tan(ArgNegRes=30°)
set
x tan(ArgNegRes=30°)
set
Commissioning manual