ABB RET670 Commissioning Manual page 132

Section 11
Testing functionality by secondary injection
126
Table 24: Test points for phase-to-phase loops L1-L2 (Ohm/Loop)
Test point Reach Set value
1 X X1
R 0
2 X X1
R R1
3 X 0.8 x X1
R 0.8 x R1
4 X 0.5 x X1
R 0.5 x R1
5 X 0.85 x RFPP x tan (LdAngle)
R 0.85 x RFPP
6 X RLdFwd x tan (LdAngle)
R RLdFwd
7 X RLdFw x tan (LdAngle)
R 0
8 X –0.2143 x RFPP/2
R 0.8 x RFPP/2
9 X –0.4 x RLdFwd x tan(ArgDir)
R 0.4 x RLdFwd
10 X 0.5 x X1
R –0.23 x X1
11 X 0.8 x X1
R –0.37 x X1
12 X 0.5 x X1
R 0.5 x R1
13 X 0
R 0.5 x RFPP
Table 25: Test points for phase-to-earth L3-G (Ohm/Loop)
Test point Reach Value
1 X (2 x X1
R 0
2 X (2 x X1
R 2 x R1
Table continues on next page
set
set
set
set
+ RFPP/2
set
set
+ RFPP/2
set
set
set
set
set
set
set
+X0 )/3
set set
+ X0 )/3
set set
+ R0 )/3
set set
1MRK 504 165-UUS -
Comments
LdAngle = angle for the maximal load
transfer
Exact: 0.8 x RFPP/2 (ArgDir)
Exact –0.5 x R1 x tan(ArgNegRes-90)
set
Exact –0.5 x R1 x tan(ArgNegRes-90)
set
Only used when OperationLdCmp setting
is 0 (Disabled)
Comments
Transformer protection RET670 2.2 ANSI
Commissioning manual