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
CurrentInput and VoltageInput) currents and voltages are created from the
test 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
CTstarpoint configuration parameter is set to ToObject.
If reverse directional feature is selected or
CTstarpoint configuration parameter is set to
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
operate.
6.
Check with low polarization voltage that the feature becomes non-directional, blocked or
with memory according to the setting.
12.8.1.5
Over/Undervoltage feature
SEMOD56488-83 v2
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.
12.8.1.6
Completing the test
SEMOD56488-99 v2
Continue to test another function or end the test by changing the
TestMode setting to Off.
Restore connections and settings to their original values, if they were changed for testing
purposes.
12.9
Secondary system supervision
SEMOD53556-1 v1
12.9.1
Current circuit supervision CCSSPVC
M12917-25 v7
Prepare the IED for verification of settings as outlined in section
in this chapter.
The Current circuit supervision function CCSSPVC is conveniently tested with the same three-
phase test set as used when testing the measuring functions in the IED.
The condition for this procedure is that the setting of
IMinOp is lower than the setting of
Ip>Block.
12.9.1.1
Verifying the settings
M12917-31 v7
1MRK 502 067-UEN B
Section 12
Testing functionality by secondary injection
199
Commissioning manual
