ABB REL670 Installation And Commissioning Manual page 145

Control
2. Check that the AUTOOK and MANOK outputs are activated.
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 ± d ϕ 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
No operation
+dϕ
-dϕ
Figure 34: Test of phase difference.
Change the phase angle between +d ϕ and —d ϕ and verify that the
3.
two outputs are activated for phase differences between these val-
ues but not for phase differences outside, see
Testing the frequency difference
The frequency difference test should verify that operation is achieved when the FreqDiff fre-
quency difference is lower than the set value for manual and auto synchronism check respective-
ly and that operation is blocked when the frequency difference is bigger.
Test with FreqDiff = 0 mHz
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.
Test with a frequency difference outside the set limits for manual and auto
synchrocheck respectively.
1. 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 fre-
quency outside the set limit.
Verifying settings by secondary
U-Bus
U-Line operation
U-Bus
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Chapter 11
injection
figure 34.
34.
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