10.13
Metering
SEMOD53588-1 v1
10.13.1
Pulse-counter logic PCFCNT
M13405-2 v7
The test of the Pulse-counter logic function PCFCNT requires the Parameter Setting tool in PCM600
or an appropriate connection to the local HMI with the necessary functionality. A known number of
pulses with different frequencies are connected to the pulse counter input. The test should be
performed with settings
Operation
=
On
or
Operation
=
Off
and the function blocked or unblocked.
The pulse counter value is then checked in PCM600 or on the local HMI.
10.13.2
Function for energy calculation and demand handling
ETPMMTR
GUID-4FC03017-93BD-4B30-A874-487BF89971D5 v1
Prepare the IED for verification of settings as outlined in section ”Overview “ and section ”Preparing
for test“ in this chapter.
10.13.2.1
Verifying the settings
GUID-F8F0D384-BC70-48CA-817E-EB9BFBD68A54 v3
Common test equipment can be used to determine the injection of current and voltage and time
measurement.
Verification of EAFACC & ERFACC output
1.
Connect the test set for injection of two-phase currents and two-phase voltage to the appropriate
current and voltage terminals of the IED.
2.
Ensure the instantaneous values of active and reactive power from CVMMXN function block are
connected to ETPMMTR function block active and reactive power inputs.
3.
Enable the
EnaAcc
setting and set
tEnergy
as 1 minute.
4.
Activate the STARTACC input and supply the IED with two-phase currents and voltages at their
rated value.
5.
Check that the ACCINPRG signal appears continuously.
6.
Note the EAFACC and ERFACCvalue after 1 minute and compare it with calculated energy
value.
7.
Similarly check after each 1 minute whether the calculated integrated energy value and
EAFACC and ERFACC outputs are matching.
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 two-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 two-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.
1MRK 506 377-UEN Rev. K
Section 10
Testing functionality by secondary injection
Railway application RER670
155
Commissioning manual
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