X0 = set zero-sequence reactance of a line
X1 = set positive-sequence reactance of a line
XM = set mutual zero-sequence impedance of a line
10.13.5.2 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.
10.13.6 Limit counter L4UFCNT
The Limit counter function L4UFCNT can be tested by connecting a binary input to
the counter and applying pulses to the counter. The speed of the pulses must not
exceed the cycle time of the function. Normally the counter will be tested when testing
the function that the counter is connected to, such as the trip function. When the
function is configured, test it together with the function that operates it. Trig the
function and check that the counter result corresponds to the number of operations.
10.13.6.1 Completing the test
Continue to test another function or end the test by changing the Test mode setting to
Off. Restore connections and settings to their original values, if they were changed for
testing purposes.
10.14 Metering
10.14.1 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.
10.14.2 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.
1MRK 506 355-UEN A Section 10
Testing functionality by secondary injection
Line distance protection REL670 2.1 IEC 239
Commissioning manual
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