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Control Chapter 11
Verifying settings by secondary
injection
3. Increase the U-Line to 60% UBase and U-Bus to be equal to
100%
UBase. The outputs should not be activated.
The test can be repeated with different values on the U-Bus and the
U-Line.
Testing the dead bus live line (DBLL)
The test should verify that the energizing check function operates for a low voltage on the U-bus
and for a high one the U-line. This corresponds to an energizing of a dead bus from a live line.
Procedure
1. Verify the local HMI settings AutoEnerg or ManEnerg to be DBLL.
2. Apply a single-phase voltage of 30% UBase to the U-bus and a sin-
gle-phase voltage of 100%
UBase to the U-line.
3. Check that the AUTOENOK and MANENOK outputs are activated.
4. Decrease the U-line to 60% UBase and keep the U-bus equal to 30%
UBase.
The outputs should not be activated.
5. The test can be repeated with different values on the U-bus and the
U-line.
Testing both directions (DLLB or DBLL)
Procedure
1. Verify the local HMI settings AutoEnerg or ManEnerg to be Both.
2. Apply a single-phase voltage of 30% UBase to the U-line and a sin-
gle-phase voltage of 100%
UBase 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% UBase and
the U-bus is equal to 30%
UBase.
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, i.e closing of the breaker in a non-energized system. Test is valid only
when this function is used.
Procedure
1. Verify the local HMI setting AutoEnerg to Off and ManEnerg to DBLL.
2. Set the parameter ManDBDL to On.
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