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1MRK 506 331-UUS A
Commissioning Manual
No operation
ANSI05000551 V1 EN
Figure 22:
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 22.
Testing the frequency difference
The frequency difference test should verify that operation is achieved when the
FreqDiffA and FreqDiffM frequency difference is lower than the set value for manual
and auto synchronizing check, FreqDiffA and FreqDiffM respectively and that
operation is blocked when the frequency 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 V-Line equal to 100% GblBaseSelLine and V-Bus 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 V-Line equal to 100% GblBaseSelLine with a frequency
equal to 50 Hz and voltage V-Bus equal to 100% GblBaseSelBus, 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 19.
V-Bus
+dj
V-Line operation
-dj
V-Bus
en05000551_ansi.vsd
Section 6
Testing functionality
109
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