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Operating Instructions
SYN 5201/SYN 5202
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abb
ABB Switzerland Ltd
3BHS109762 E01
en D 94
Template: CHIND Techn doc stand, A4 P de, R1.DOT; Filename: 3BHS109762E01 D.doc; Print: 12/6/2011 5:48:00 PM; Save: 12/1/2011 2:37:00 PM; CHIND No. 3BHS109763 ZAB D14 Rev. -; I-Q
8.2.11
Test of the phase sequence and tuning of the measuring voltages
The following tasks are the most important ones during the entire commissioning.
They don't concern the synchronization device itself, but their right connections
at the measuring voltages. In case of ignorance, damages may be caused to the
plant!
It is a prerequisite for the following work and for the correct functioning of the
synchronization that the two measuring voltages display the correct values in % (Un
set).
When disconnecting high voltage cables, it is essential that the corresponding
regulations on working on high voltage installations are complied with.
Bring the circuit breaker to operating position so that it can be operated by
SYNCHROTACT 5 or manually.
Incorrect polarity cannot be detected by the synchronizer. Paralleling with incorrect
polarity can lead to serious damage. Therefore, the following test has to be carried out:
Closing the CB:
Isolate one voltage source: open either isolator on generator side or star point
isolator or isolator on busbar side
The other voltage source must be connected
Close circuit breaker
The function TEST ton can be used to close the circuit breaker. This determines the
setting values for the parameters
U Offset and t on at the same time. The values can
be accepted if the result is realistic.
U should now be equal to zero.
Caution
Isolator
Starpoint-
isolator
CB
S00013
U1
G
SYNCHROTACT 5
U2
U = 0
= 0
U1 = U2
Caution
Caution