ABB RED670 Commissioning Manual page 127

1MRK 505 378-UUS Rev. J
Test point
10
11
12
13
(2 x X1set+X0set)/3
25% of RFPEZx
ANSI05000369 V3 EN-US
Figure 34:
Table 32:
Test point
1
2
3
4
Table continues on next page
Line differential protection RED670
Commissioning manual
Reach Set value
X 0.5 x X1
set
R -0.5 x X1
set
tan( ArgNegRes-90⁰)
X 0.8 x X1
set
R -0.8 x X1
set
tan( ArgNegRes-90⁰)
X 0.5 x X1
set
R 0.5 x R1
set
X 0
R 0.5 x RFPP
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
Test points for phase-to-ground C-G (Ohm/Loop)
Reach Value
X (2 x X1 +X0
set
R 0
X (2 x X1 + X0
set
R (2 x R1 + R0
set
X 0.8 x (2 x X1
R 0.8 x (2 x R1
X 0.5 x (2 x X1
R 0.5 x (2 x R1
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Comments
ArgNegRes = 120⁰ fixed
Formula applies if R set value < RFPP/2
x
ArgNegRes = 120⁰ fixed
Formula applies if R set value < RFPP/2
x
80%
3
50%
4
5
ArgLd
6
(Ω /loop)
R
7 13
ArgDir
ANSI05000369-3-en.vsdx
Comments
)/3
set
)/3
set
)/3
set
+ X0 )/3
set set
+ R0 )/3 +RFPG
set set
+ X0 )/3
set set
+R0 )/3 + RFPG
set set
Section 11
Testing functionality by secondary injection
121