ABB Relion 670 series - Page 131

Test point Reach Set value Comments
8 X -0.8 x R
min
x tan( ArgDir) R
min
= minimum of RFPP/2 and RLdFwd
ArgDir = 20⁰ fixed
R 0.8 x R
min
9 X -0.4 x R
min
x tan( ArgDir) R
min
= minimum of RFPP/2 and RLdFwd
ArgDir = 20⁰ fixed
R 0.4 x R
min
10 X 0.5 x X1
set
ArgNegRes = 120⁰ fixed
Formula applies if R set value < RFPP/2
R -0.5 x X1
set
x
tan( ArgNegRes-90⁰)
11 X 0.8 x X1
set
ArgNegRes = 120⁰ fixed
Formula applies if R set value < RFPP/2
R -0.8 x X1
set
x
tan( ArgNegRes-90⁰)
12 X 0.5 x X1
set
R 0.5 x R1
set
13 X 0
R 0.5 x RFPP
(2 x X1set+X0set)/3
R
X
(
Ω
/loop)
50%
80%
1
2
3
4
5
6
7
8
9
10
11
50% of RFPEZx
25% of RFPEZx
RFPG
12
ANSI05000369-3-en.vsdx
13
ArgLd
alt. 80% of
RFPG (Load
encroachment)
ArgDir
ANSI05000369 V3 EN-US
Figure 36: Distance protection characteristic with test points for phase-to-ground measurements
Table 31: Test points for phase-to-ground C-G (Ohm/Loop)
Test point
Reach Value Comments
1 X (2 x X1
set
+X0
set
)/3
R 0
2 X (2 x X1
set
+ X0
set
)/3
R (2 x R1
set
+ R0
set
)/3
Table continues on next page
1MRK 504 165-UUS Rev. J Section 11
Testing functionality by secondary injection
Transformer protection RET670 125
Commissioning manual
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