ABB SYN 5201 Operating Instructions Manual page 17

Operating Instructions
2.3.2 TEST U-Match
This test function proceeds as follows:
1. The generator voltage is adjusted until this lies in the range between 95 and 97% of
the line voltage, then the adjusting pulse is discontinued.
Ten seconds after the first adjusting pulse, the voltage difference  U0 is measured,
2.
then a Higher command U+ lasting 5 s is given. A further 10 s after the end of the
pulse, the voltage difference  U is measured and dU/dt calculated according to the
following formula:
3. With this dU/dt value, the generator voltage is brought back to approx. 96 %.
4. Ten seconds later, the generator voltage is brought to approx. 100 % with the same
dU/dt value. After a further ten seconds, dU/dt is calculated again and shown on the
display.
2.3.3 TEST f-Match
This test function proceeds as follows:
1. The slip is adjusted until this lies in the range between +1 and +3%, then the
adjusting pulse is discontinued.
2. Ten seconds after the first adjusting pulse, the slip s0 is measured, then a higher
command f+ lasting 3 s is given. A further 10 s after the end of the pulse, the slip s
is measured and df/dt calculated according to the following formula:
3. With this df/dt value, the slip is brought back to approx. +2 %.
4. Ten seconds later, the slip is brought to 0 % with the same df/dt value. After a
further ten seconds, df/dt is calculated again and shown on the display.
abb
ABB Switzerland Ltd
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  
U Uo

dU / dt
5

s

df / dt
3
Document No Art Part
3BHS109762 E01
SYN 5201/SYN 5202
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Language Revision
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