Phase Selection, Quadrilateral Characteristic With Settable Angle Frpspdis (21) - ABB RET670 Commissioning Manual

1MRK 504 154-UUS B
10.4.6 Phase selection, quadrilateral characteristic with settable angle
FRPSPDIS (21)
Prepare the IED for verification of settings as outlined in section
chapter.
The phase selectors operate on the same measuring principles as the impedance measuring
zones. So it is necessary to follow the same principles as for distance protection, when performing
the secondary injection tests.
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 30% of the rated current.
Ensure that the maximum continuous current of an 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 22: Operating characteristic for phase selection function, forward direction single-
Commissioning manual
25 and 26 for information.
X
1
4
85%
XN )
ArgNegRes
6
50% of RLdFwd
RFltFwdPG
phase faults
W
loop
( / )
3
5
2
7
ANSI09000734-2-en.vsd
Testing functionality by secondary injection
GUID-701C863B-40C6-42D7-A0C8-ECEB084B1165 v4
"Preparing for test"
22 and 23 should be tested. See
( )
W
/ loop
R
Section 10
in this
97