ABB RET670 - Page 125

Table 20: 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
12 X 0.5 x X1
set
R 0.5 x R1
set
13 X 0 Only used when
OperationLdCmp
setting is 0 (Off)
R 0.5 x RFPP
Table 21: Test points for phase-to-earth L3-E (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
3 X 0.8 x (2 x X1
set
+ X0
set
)/3
R 0.8 x (2 x R1
set
+ R0
set
)/3 +RFPE
set
Table continues on next page
1MRK 504 088-UEN C Section 13
Verifying settings by secondary injection
119
Installation and commissioning manual