AEC IST9, Руководство пользователя

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5 Use and Operation
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lead to the inverter fault. If the circulating current larger than 3A, please report it to our
company to maintain it.
Step 3 Switch on the total output breaker of output distribution cabinet, each output branch breaker,
and then start the load one by one.
----End
5.4.2 Shut Down Parallel System
Generally, it isn't recommended to start or close parallel system frequently.
Step 1 Shut down all load.
Step 2
Shut down parallel UPS one by one.
Step 3
Switch off the related breakers of each unit (when daily use, the breakers can be not closed).
----End
5.4.3 Exit Parallel System Online
When one UPS in parallel system fault, it will exit from parallel system automatically with
sound & light alarm. At that time, perform the operations shown in Figure5-1, the fault UPS
will be exited from parallel system completely to achieve online hot maintenance or
replacement.
Figure5-1 Exit parallel system online
When the parallel system works normally, it's better not to exit the output from parallel
system before the unit closed, or the power system will be abnormal.
5.4.4 Add New UPS into Parallel System Online
When it has to add one or more UPS into parallel system, perform the operations shown in
Figure5-2. When the added UPS works steadily, it will add into parallel system automatically
and achieve current- sharing.