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Section 10
Testing functionality by secondary injection
10.8.1.5
10.8.1.6
10.9
10.9.1
10.9.1.1
188
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.
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
Off. Restore connections and settings to their original values, if they were changed for
testing purposes.
Secondary system supervision
Current circuit supervision CCSSPVC
Prepare the IED for verification of settings outlined in section
verify
settings".
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.
Verifying the settings
1MRK 506 355-UEN A
"Preparing the IED to
Line distance protection REL670 2.1 IEC
Commissioning manual
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