8. After some time (multiple of minute) remove the current and voltage input from CVMMXN function
block.
9. Check the EAFACC and ERFACC output in the next 1 minute cycle for the retaining the same value.
10. Activate STOPACC input after some time and supply the IED with same current and voltage.
11. Check that the ACCINPRG signal disappears immediately and EAFACC and ERFACC outputs also
stop updating.
12. Similarly the testing can be done for EAFACC and ERFACC outputs by changing the power inputs
directions through direction settings.
Verification of MAXPAFD & MAXPRFD outputs
1. Repeat the above test steps 1 to 2.
2. Set tEnergy setting as 1 minute and supply the IED with three-phase currents and voltages at their
rated value till 1 minute.
3. Check the MAXPAFD and MAXPRFD outputs after 1 minute and compare it with last 1 minute
average power values.
4. Increase either three-phase current or voltage above the last 1 minute value.
5. After 1 minute check the MAXPAFD and MAXPRFD whether it is showing the last 1 minute average
power value as maximum.
6. Next 1 minute cycle reduce the current or voltage below previous value.
7. Check after 1 minute whether the MAXPAFD and MAXPRFD outputs are retaining the old maximum
value.
8. Similarly the testing can be done for MAXPAFD and MAXPRFD outputs by changing the power
inputs directions through direction settings.
Verification of EAFALM & ERFALM outputs
1. Repeat the above test steps 1 to 2.
2. Set tEnergy setting as 1 minute and supply the IED with three-phase currents and voltages at their
rated value till 1 minute.
3. Ensure that the active and reactive energy values are less than the EALim and ERLim setting
default values respectively.
4. Check that EAFALM and ERFALM are low.
5. Increase the supply currents or voltage in next 1 minute cycle such that the active or reactive energy
values are greater than the EALim and ERLim setting default values respectively.
6. Check that EAFALM and ERFALM are high after 1 minute.
7. Similarly the testing can be done for EARALM and ERRALM outputs by changing the power inputs
directions through direction settings.
11.15.2.2 Completing the test
M13906-301 v5
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.
11.16 Station communication
SEMOD53595-1 v1
11.16.1 Multiple command and transmit MULTICMDRCV / MULTICMDSND
SEMOD172432-5 v3
The multiple command and transmit function (MULTICMDRCV / MULTICMDSND) is only applicable for
horizontal communication.
Test of the multiple command function block and multiple transmit is recommended to be performed in a
system, that is, either in a complete delivery system as an acceptance test (FAT/SAT) or as parts of that
1MRK 504 165-UUS Rev. J Section 11
Testing functionality by secondary injection
Transformer protection RET670 289
Commissioning manual
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