Testing The Energizing Check - ABB RET670 Installation And Commissioning Manual

1MRK 504 088-UEN C
13.11.1.3
Installation and commissioning manual
1. Apply voltages U-Line equal to 100% UBase and U-Bus equal to 100%
UBase, with a frequency difference equal to 0 mHz and a phase difference
lower than the set value.
2. Check that the AUTOSYOK and MANSYOK outputs are activated.
3. Apply voltage to the U-Line equal to 100% UBase with a frequency equal to
50 Hz and voltage U-Bus equal to 100% UBase, with a frequency outside the
set limit.
4. Check that the two outputs are not activated. The test can be repeated with
different frequency values to verify that the function operates for values lower
than the set ones. If a modern test set is used, the frequency can be changed
continuously.
Testing the reference voltage
1. Use the same basic test connection as in figure 66.
The voltage difference between the voltage connected to U-Bus and U-Line
should be 0%, so that the AUTOSYOK and MANSYOK outputs are
activated first.
2. Change the U-Line voltage connection to U-Line2 without changing the
setting on the local HMI. Check that the two outputs are not activated.

Testing the energizing check

During the test of the energizing check function for a single bay arrangement, these
voltage inputs are used:
U-Line UL1, UL2 or UL3 voltage input on the IED
U-Bus Bus voltage input on the IED
General
When testing the energizing check function for the applicable bus, arrangement
shall be done for the energizing check functions. The voltage is selected by
activation of different inputs in the voltage selection logic.
The test shall be performed according to the settings for the station. Test the
alternatives below that are applicable.
Testing the dead line live bus (DLLB)
The test should verify that the energizing check function operates for a low voltage
on the U-Line and for a high voltage on the U-Bus. This corresponds to the
energizing of a dead line to a live bus.
Verifying settings by secondary injection
Section 13
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