12.4.6.2 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.
12.4.7 Under impedance protection for Generator ZGVPDIS
Prepare the IED for verification of settings.
Values of the logical signals for ZGVPDIS are available on the local HMI under Main
menu/Tests/Function status/Impedance/ZGVPDIS (21G, Z<)/
1:ZGVPDIS:ZGVPDIS. The Signal Monitoring in PCM600 shows the same signals
that are available on the local HMI.
12.4.7.1 Verifying the settings
Distance protection zones
While measuring operating characteristics, keep the current constant. Keep the
current as close as possible to its rated value or lower, however make sure it is higher
than 30% of the rated current.
If the measurement of the operating characteristics runs under constant voltage
conditions, ensure that the maximum continuous current in an IED does not exceed
four times its rated value.
To verify the zone 1 mho characteristic, at least two points must be tested.
Section 12 1MRK502053-UEN B
Testing functionality by secondary injection
142 Generator protection REG670 2.0 IEC
Commissioning manual
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