ABB Relion 670 Series Commissioning Manual page 204

Section 11
Testing functionality by secondary injection
Overall check in principal as above (non-directional overcurrent feature)
3. Trip value measurement
The relevant voltage restraining value (according to setting parameter
to be injected from the test set and the influence on the trip value has to be calculated when
testing of the trip value is done.
4. Trip time measurement
Definite times may be tested as above (non-directional overcurrent feature). For inverse time
characteristics the PICKUP value (to which the overcurrent ratio has to be calculated) is the
actual pickup value as got with actual restraining from the voltage restraining quantity.
11.8.1.4 Overcurrent feature with directionality
Please note that the directional characteristic can be set in two different ways either just
dependent on the angle between current and polarizing voltage (setting parameter
DirPrinc_OC2 set to or in a way that the trip value also is dependent on the angle between
or
current and polarizing voltage according to the I · cos(F) law (setting parameter
DirPrinc_OC2 set to I · cos(F). This has to be known if a more detailed measurement of the
directional characteristic is made, than the one described below.
Procedure
1. Connect the test set for injection of three-phase currents and three-phase voltages to the
appropriate current and voltage terminals of the IED.
2. Inject current(s) and voltage(s) in a way that relevant measured (according to setting
parameter
set.
3. Set the relevant measuring quantity current to lag or lead (lag for negative RCA angle and
lead for positive RCA angle) the relevant polarizing quantity voltage by an angle equal to the
set IED characteristic angle (rca-dir) when forward directional feature is selected and the
CTWYEpoint configuration parameter is set to ToObject .
If reverse directional feature is selected or
FromObject , the angle between current and polarizing voltage shall be set equal to rca-dir
+180°.
4. Overall check in principal as above (non-directional overcurrent feature)
5. Reverse the direction of the injection current and check that the protection does not trip.
6. Check with low polarization voltage that the feature becomes non-directional, blocked or
with memory according to the setting.
11.8.1.5 Over/Undervoltage feature
Procedure
1. Connect the test set for injection three-phase voltages to the appropriate voltage terminals
of the IED.
2. Inject voltage(s) in a way that relevant measured (according to setting parameter
VoltageInput ) voltages are created from the test set.
3. Overall check in principal as above (non-directional overcurrent feature) and correspondingly
for the undervoltage feature.
198
CurrentInput and VoltageInput ) currents and voltages are created from the test
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CTWYEpoint configuration parameter is set to
Line distance protection REL670
1MRK 506 371-UUS E
VoltageInput ) has also
SEMOD56488-60 v5
DirPrinc_OC1
DirPrinc_OC1 or
SEMOD56488-83 v2
Commissioning manual