ABB Relion 650 Series Commissioning Manual page 80

Section 5
Testing functionality
72
1. Apply voltages U-Line (e.g.) = 80% UBase and U-Bus = 80% UBase.
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 values. Check with both U1 and U2
respectively lower than the other.
4. Increase the U-Bus to 110% UBase, and the U-Line = 90% UBase 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 (e.g.) = 100% UBase and U-Bus = 100% UBase, with
a phase difference equal to 0 degrees and a frequency difference lower than
FreqDiffA and FreqDiffM
2. The test can be repeated with other PhaseDiff values to verify that the
function operates for values lower than the set ones. By changing the phase
angle on U1 connected to U-Bus, between ± dφ degrees. The user can check
that the two outputs are activated for a PhaseDiff lower than the set value. It
should not operate for other values. See figure 13.
No operation
IEC05000551 V1 EN
Figure 13: Test of phase difference.
3. Change the phase angle between +dφ and —dφ and verify that the two
outputs are activated for phase differences between these values but not for
phase differences outside, see figure 13.
Testing the frequency difference
The frequency difference test should verify that operation is achieved when the
FreqDiff frequency difference is lower than the set value for manual and auto
U-Bus
+dj
U-Line operation
-dj
U-Bus
en05000551.vsd
1MRK 511 209-UEN -
REC650
Commissioning Manual