ABB Relion 670 Series Commissioning Manual page 114

Section 11
Testing functionality by secondary injection
Test point
5
6
7
8
9
10
11
12
13
Table 20
(2 x X1set+X0set)/3
25% of RFPEZx
ANSI05000369 V3 EN-US
Figure 26:
Table 21
108
Reach Set value
X 0.85 x RFPP x tan (ArgRLd)
R 0.85 x RFPP
X RLdFw x tan (ArgLd)
R RLdFw
X 0
R RLdFw
X –0.2143 x RFPP/2
R 0.8 x RFPP/2
X –0.4 x RLdFw x tan(ArgDir=20°)
R 0.4 x RLdFw
X 0.5 x X1
set
R –0.23 x X1
set
X 0.8 x X1
set
R –0.37 x X1
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 25.
X
2
1
11
10
12
9
8
50% of RFPEZx
alt. 80% of
RFPG
RFPG (Load
encroachment)
Distance protection characteristic with test points for phase-to-ground measurements
is used in conjunction with figure 26.
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Comments
ArgLd = angle for the maximal load transfer
Exact: 0.8 x RFPP/2 (ArgDir=20°)
Exact –0.5 x R1
Exact –0.5 x R1
set
Only used when RLdFw > 0.5 x RFPP
80%
3
50%
4
5
ArgLd
6
(Ω /loop)
R
7 13
ArgDir
ANSI05000369-3-en.vsdx
1MRK 504 165-UUS Rev. J
x tan(ArgNegRes=30°)
set
x tan(ArgNegRes=30°)
set
Transformer protection RET670
Commissioning manual