NO TRIP signal should appear due to symmetrical condition.
14. Deactivate the CLOSECMD. Decrease one current with 120% of the current
unsymmetrical level compared to the other two phases. Activate CLOSECMD
and measure the operating time of the CCPDSC protection.
Use the TRIP signal from the configured binary output to stop the timer.
15. Deactivate the CLOSECMD. Decrease one current with 80% of the current
unsymmetrical level compared to the other two phases. Activate CLOSECMD.
NO TRIP signal should appear.
10.4.11.2 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.
10.4.12 Directional underpower protection GUPPDUP
Prepare the IED for verification of settings outlined in section
"Preparing the IED to
verify settings".
10.4.12.1 Verifying the settings
The underpower protection shall be set to values according to the real set values to be
used.
The test is made by means of injection of voltage and current where the amplitude of
both current and voltage and the phase angle between the voltage and current can be
controlled. During the test, the analog outputs of active and reactive power shall be
monitored.
1. Connect the test set for injection of voltage and current corresponding to the
mode to be used in the application. If a three-phase test set is available this could
be used for all the modes. If a single-phase current/voltage test set is available the
test set should be connected to a selected input for one-phase current and voltage.
Section 10 1MRK 511 360-UEN A
Testing functionality by secondary injection
106 Bay control REC670 2.1 IEC
Commissioning manual
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