ABB Relion REG670, Commissioning Manual

Page: 119 / 262

X1+XN
X
R (Ohm/loop)
50%
80%
1
2
3
4
5
6
7
8
9
10
11
80% of RLdFw
40% of RLdFw
RFPE
12
13
c
b =
Ar
gLD
alt. 80% of
RFPE (Load
encroachment)
120°
20°
a
IEC05000369-3-en.vsd
IEC05000369 V3 EN-US
Figure 40: Distance protection characteristic with test points for phase-to-earth
measurements
Table 24 is used in conjunction with figure 40 .
Table 23: Test points for phase-to-phase loops L1-L2 (Ohm/Loop)
Test point Reach Set value Comments
1 X X1
set
R 0
2 X X1
set
R R1
set
3 X 0.8 x X1
set
R 0.8 x R1
set
+ RFPP/2
4 X 0.5 x X1
set
R 0.5 x R1
set
+ RFPP/2
5 X 0.85 x RFPP x tan (ArgRLd)
ArgRLd = angle for the maximal load transfer
R 0.85 x RFPP
6 X RLdFw x tan (ArgLd)
R RLdFw
7 X RLdFw x tan (ArgLd)
R 0
8 X –0.2143 x RFPP/2 Exact: 0.8 x RFPP/2 (ArgDir)
R 0.8 x RFPP/2
9 X –0.4 x RLdFw x tan(ArgDir)
R 0.4 x RLdFw
10 X 0.5 x X1
set
Exact –0.5 x R1
set
x tan(ArgNegRes-90)
R –0.23 x X1
set
11 X 0.8 x X1
set
Exact –0.5 x R1
set
x tan(ArgNegRes-90)
R –0.37 x X1
set
Table continues on next page
1MRK 502 067-UEN B Section 12
Testing functionality by secondary injection
113
Commissioning manual