Figure. 5.5.5 - 175. Example application (synchrocheck over three breakers, with 2LL+U3+U4 connection).
The following aspects of the compared voltages are used in synchorization:
• voltage magnitudes
• voltage frequencies
• voltage phase angles
The two systems are synchronized when these three aspects are matched. All three cannot, of course,
ever be exactly the same so the function requires the user to set the maximum difference between the
measured voltages.
The function's outputs are SYN OK, BYPASS, and BLOCKED signals which can be used for direct I/O
controlling and user logic programming. The function generates general time-stamped ON/OFF events
to the common event buffer from each of the output signals. The time stamp resolution is 1 ms.
The synchrocheck function uses a total of eight (8) separate setting groups which can be selected
from one common source.
Depending on how the measured voltage compares to the set
U live> and U dead< parameters, either
system can be in a "live" or a "dead" state. The parameter
SYNx U conditions is used to determine the
conditions (in addition to the three aspects) which are required for the systems to be considered
synchronized.
The image below shows the different states the systems can be in.
Genera
Generattor Commander
or Commander
Instruction manual
Version: 2.07
332
© Arcteq Relays Ltd
IM00001
Содержание Generator Commander
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