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1MRK 505 378-UEN Rev. K
Table 48:
Parameter
Healthy condition
Impedance
magnitude
p = the per unit distance of line length
Measuring the fault distance
1.
Set the test points Z
2.
Subject both the local and remote IED to healthy normal load conditions for at least two
seconds.
3.
Apply a fault condition for at least 3-4 cycles (or 100 ms approximately) and bring back to the
condition as in step 2.
4.
Check the result under disturbance records or function status in the LHMI.
11.13.14.4
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.
11.14
Metering
11.14.1
Pulse-counter logic PCFCNT
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.
11.14.2
Function for energy calculation and demand handling
ETPMMTR
Prepare the IED for verification of settings as outlined in section "Overview " and section "Preparing
for test" in this chapter.
11.14.2.1
Verifying the settings
Common test equipment can be used to determine the injection of current and voltage and time
measurement.
Verification of EAFACC & ERFACC output
Line differential protection RED670
Commissioning manual
Test settings
Local side
U = 63.5V, I = 0 A (balanced
condition)
Test points
•
Z
= p*((R0 + 2*R1) + j*
d
(X0+2*X1)) for single
phase to ground faults
•
Z
= p*(R1 + j* X1) for
1-d
three and two phase
faults
and Z
d
1-d
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Remote side
U = 63.5V, I = 0 A (balanced
condition)
Test points
•
Z
= (1-p)*((R0 + 2*R1) +
1-d
j* (X0+2*X1)) for single
phase to ground faults
•
Z
= (1-p)*(R1 + j* X1) for
1-d
three and two phase faults
for the local and remote IEDs respectively from Table 48.
Section 11
Testing functionality by secondary injection
GUID-0BA09C80-7125-4CD1-82C4-B9DD782504B7 v1
GUID-0FE44853-E8EE-4E70-A588-5E21565B56BF v1
SEMOD53588-1 v1
GUID-4FC03017-93BD-4B30-A874-487BF89971D5 v1
GUID-F8F0D384-BC70-48CA-817E-EB9BFBD68A54 v3
M13405-2 v7
249
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