Testing both directions (DLLB or DBLL)
1. Verify the local HMI settings AutoEnerg or ManEnerg to be Both.
2. Apply a single-phase voltage of 30% UBaseLine to the U-Line and a single-
phase voltage of 100% UBaseBus to the U-Bus.
3. Check that the AUTOENOK and MANENOK outputs are activated.
4. Change the connection so that the U-Line is equal to100% UBaseLine and the
U-Bus is equal to 30% UBaseBus. The outputs should still be activated.
5. The test can be repeated with different values on the U-Bus and the U-Line.
Testing the dead bus dead line (DBDL)
The test should verify that the energizing check function operates for a low voltage
on both the U-Bus and the U-Line, that is, closing of the breaker in a non-energized
system. Test is valid only when this function is used.
1. Verify the local HMI setting AutoEnerg to be Off and ManEnerg to be DBLL.
2. Set the parameter ManEnergDBDL to On.
3. Apply a single-phase voltage of 30% UBaseBus to the U-Bus and a single-
phase voltage of 30% UBaseLine to the U-Line.
4. Check that the MANENOK output is activated.
5. Increase the U-Bus to 80% UBase and keep the U-Line equal to 30% UBase.
The outputs should not be activated.
6. Repeat the test with ManEnerg set to DLLB with different values on the U-
Bus and the U-Line voltage.
15.11.1.4 Testing the voltage selection
Testing the voltage selection for single CB arrangements
This test should verify that the correct voltage is selected for the measurement in
the energizing check function used in a double-bus arrangement. Apply a single-
phase voltage of 100% UBaseLine to the U-Line and a single-phase voltage of
100% UBaseBus to the U-Bus.
If the UB1/2OK inputs for the fuse failure are used, they must be activated, during
tests below. Also verify that deactivation prevents operation and gives an alarm.
1. Connect the signals above to binary inputs and binary outputs.
2. Connect the voltage inputs to the analog inputs used for each bus or line
depending of the type of busbar arrangement and verify that correct output
signals are generated.
Testing the voltage selection for double breaker or breaker-and-a-
half diameter when applicable
This test should verify that correct voltage is selected for the measurement in the
energizing function used for a diameter in a One-and-a-half breaker arrangement.
1MRK 502 029-UEN A Section 15
Verifying settings by secondary injection
219
Installation and commissioning manual
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