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Section 11
Testing functionality by secondary injection
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.
11.7.2.5
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.
11.7.2.6
Completing the test
Continue to test another function or end the test by changing the TESTMODE setting to Disabled.
Restore connections and settings to the original values, if changed for testing purposes.
11.8
Secondary system supervision
11.8.1
Current circuit supervision CCSSPVC (87)
Prepare the IED for verification of settings outlined in Section
The Current circuit supervision function CCSSPVC (87) 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 Pickup_Block.
11.8.1.1
Verifying the settings
128
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1MRK 511 409-UUS Rev. K
"Preparing the IED to verify
Phasor measurement unit RES670
Commissioning manual
SEMOD56488-83 v2
SEMOD56488-99 v2
SEMOD53556-1 v1
M12917-25 v8
settings".
M12917-31 v8
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