ABB REG670 - Page 159

Table 21: Test points for phase-to-phase loops A-B (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
+ RFPPZx/2
4 X 0.5 x X1
set
R 0.5 x R1
set
+ RFPPZx/2
5 X 0.85 x RFPPZx x tan (LdAngle) LdAngle = angle for the maximal load
transfer
R 0.85 x RFPPZx
6 X RLdFwd x tan (LdAngle)
R RLdFwd
7 X RLdFwd x tan (LdAngle)
R 0
8 X –0.2143 x RFPPZx/2 Exact: 0.8 x RFPPZx/2 (ArgDir=20°)
R 0.8 x RFPPZx/2
9 X –0.4 x RLdFwd x tan(ArgDir=20°)
R 0.4 x RLdFwd
10 X 0.5 x X1
set
Exact –0.5 x R1
set
x
tan(ArgNegRes=30°)
R –0.23 x X1
set
11 X 0.8 x X1
set
Exact –0.5 x R1
set
x
tan(ArgNegRes=30°)
R –0.37 x X1
set
12 X 0.5 x X1
set
R 0.5 x R1
set
13 X 0
R 0.5 x RFPPZx
Table 21 is used in conjunction with figure 44.
1MRK 502 073-UUS A Section 13
Testing functionality by secondary injection
Generator protection REG670 2.2 ANSI and Injection equipment REX060, REX061, REX062 153
Commissioning manual