ABB REG670 Commissioning Manual page 160

Section 13
Testing functionality by secondary injection
154
1
11
10
40% of RLdFwd
80% of RLdFwd
alt. 80% of
RFPG (Load
encroachment)
ANSI05000369 V2 EN-US
Figure 45: Distance protection characteristic with test points for phase-to-ground
measurements
Table 22 is used in conjunction with figure 45.
Table 22: Test points for phase-to-ground C-G (Ohm/Loop)
Test point Reach Value
1 X (2 x X1
R 0
2 X (2 x X1
R 2 x R1
3 X 0.8 x (2 x X1
R 0.8 x (2 x R1
+RFPGZx
4 X 0.5 x (2 x X1
R 0.5 x (2 x R1
RFPGZx
5 X 0.85 x RFPGZx
tan(LdAngle
R 0.85 x RFPGZx
6 X RLdFwdset x tan(LdAngleSet)
R RLdFwd
7 X 0
R RLdFwd
Table continues on next page
Generator protection REG670 2.2 ANSI and Injection equipment REX060, REX061, REX062
2
80%
3
50%
4
12
5
120°
a
6
7
13
9
20°
8
RFPG
ANSI05000369-2-en.vsd
+X0 )/3
set set
+ X0 )/3
set set
+ R0 )/3
set set
+ X0 )/3
set set
+ R0 )/3
set set
set
+ R0 )/3
set set
+R0 )/3 +
set set
set
x
set
)
set
set
set
1MRK 502 073-UUS A
Comments
LdAngle = angle for the maximal load
transfer
Commissioning manual