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Section 11
Testing functionality by secondary injection
11.7.1.5
11.7.1.6
11.8
11.8.1
148
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 CTWYEpoint configuration parameter is set to ToObject.
If reverse directional feature is selected or CTWYEpoint 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
trip.
6.
Check with low polarization voltage that the feature becomes non-directional,
blocked or with memory according to the setting.
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.
Completing the test
Continue to test another function or end the test by changing the TestMode setting to
Disabled. Restore connections and settings to their original values, if they were changed
for testing purposes.
Secondary system supervision
Current circuit supervision CCSSPVC (87)
Prepare the IED for verification of settings outlined in section
settings".
1MRK 511 366-UUS -
"Preparing the IED to verify
Commissioning manual
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