ABB Relion 670 Series Commissioning Manual page 112

Section 11
Testing functionality by secondary injection
Measure operating characteristics during constant current conditions. Keep the measured current
as close as possible to the rated value of its associated input transformer, or lower. But ensure
that it is higher than the set minimum operating current.
Ensure that the maximum continuous current to the IED does not exceed four times its rated
value, if the measurement of the operating characteristics runs under constant voltage conditions.
To verify the settings the operating points according to figures
also tables
X +
( 1
ANSI09000734 V2 EN-US
Figure 25: Operating characteristic for phase selection function, forward direction single-
Table 22:
Test point
1
2
3
4
5
6
106
22 and 23 for information.
X
1
4
85%
XN )
ArgNegRes
6
50% of RLdFwd
RFltFwdPG
phase faults
Test points for phase-to-ground loop CG (Ohm/loop)
Reach Value
X [X1+XN]
R 0
X 0
R RLdFwd
R RFltFwPG
X 0.85·[X1+XN]
R
X 0.85·[X1+XN]
R -0.85·[X1+XN]·
tan (AngNegRes-90°)
X RFltFwdPG·tan (LdAngle)
R RFltFwdPG
X -0,5·RLdFwd·tan (ArgDir)
R 0,5·RLdFwd
© Copyright 2017 ABB. All rights reserved
W
( / loop )
3
5
2
7
ANSI09000734-2-en.vsd
Comments
XN=(X
When RLdFWd < RFltFwPG
When RLdFwdPG > RFltFwPG
R≈0.491·(X1+XN)+RFltFwdPG
Can be limited by RFltFwPG
Only when RLdFwd < RFltFwPG
25 and 26 should be tested. See
( )
W
loop
/
R
-X )/3
0 1
Line distance protection REL670
Commissioning manual
1MRK 506 371-UUS E