ABB RELION 670 Series Commissioning Manual page 119

1MRK 505 339-UEN B
Testing the phase angle difference
The phase angle differences
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%
GblBaseSelBus , with a phase difference equal to 0 degrees and a frequency difference
lower than
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,
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 20.
IEC05000551 V1 EN-US
Figure 23: 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 20.
Testing the frequency difference
The frequency difference test should verify that operation is achieved when the
FreqDiffM frequency difference is lower than the set value for manual and auto synchronizing
FreqDiffA and FreqDiffM respectively and that operation is blocked when the frequency
check,
difference is greater.
Test with frequency difference = 0 mHz
Test with a frequency difference outside the set limits for manual and auto synchronizing
check respectively.
1. Apply voltages U-Line equal to 100%
GblBaseSelBus , 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%
Hz and voltage U-Bus equal to 100%
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.
Commissioning manual
PhaseDiffM and PhaseDiffA respectively are set to their final
FreqDiffA and FreqDiffM .
No operation
+dj
-dj
GblBaseSelLine and U-Bus = 100%
PhaseDiffM and PhaseDiffA . By changing the
U-Bus
U-Line operation
U-Bus
en05000551.vsd
GblBaseSelLine and U-Bus equal to 100%
GblBaseSelLine with a frequency equal to 50
GblBaseSelBus , with a frequency outside the set
Testing functionality by secondary injection
FreqDiffA and
Section 10
M2377-215 v8
M2377-232 v9
113