ABB Relion 670 series, Installation And Commissioning Manual

Page: 222 / 260

The settings used in the test shall be final settings. The test shall be adapted to site
setting values instead of values in the example below.
Test with no voltage difference between the inputs.
Test with a voltage difference higher than the set UDiffSC
1. Apply voltages U-Line (for example) = 80% UBaseLine and U-Bus = 80%
UBaseBus .
2. Check that the AUTOSYOK and MANSYOK outputs are activated.
3. The test can be repeated with different voltage values to verify that the
function operates within the set
UDiffSC . Check with both U-Line and U-Bus
respectively lower than the other.
4. Increase the U-Bus to 110% UBaseBus , and the U-Line = 90% UBaseLine
and also the opposite condition.
5. Check that the two outputs for manual and auto synchronism are not activated.
Testing the phase angle difference
The phase angle differences PhaseDiffM and PhaseDiffA respectively are set to
their final settings and the test should verify that operation is achieved when the
phase angle difference is lower than this value both leading and lagging.
Test with no voltage difference
1. Apply voltages U-Line (for example) = 100% UBaseLine and U-Bus = 100%
UBaseBus , with a phase difference equal to 0 degrees and a frequency
difference lower than FreqDiffA and FreqDiffM
2. Check that the AUTOSYOK and MANSYOK outputs are activated.
The test can be repeated with other phase difference values to verify that the
function operates for values lower than the set ones,
PhaseDiffM and
PhaseDiffA . By changing the phase angle on the voltage connected to U-Bus,
between ± dφ degrees, the user can check that the two outputs are activated
for a phase difference lower than the set value. It should not operate for other
values. See figure
104 .
Section 15
1MRK 502 029-UEN A
Verifying settings by secondary injection
216
Installation and commissioning manual