Fideltronik Inigo MY Series, Руководство пользователя

Страница: 97 / 110

MY Series (10kVA-40kVA) UPS
User Manual 6 Use and Operation
89
maintain it. In addition, once the circulating current of parallel unit too large, it will lead to the
inverter fault. If the circulating current is 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
6.4.2 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
6.4.3 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 Figure6-1, the fault UPS will be exited
from parallel system completely to achieve online hot maintenance or replacement.
Switch off breaker in the
distribution box, which connects
with the faulty UPS. Close the fault UPS
according to shutdown
procedures.
Figure6-1 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.
6.4.4 Add New UPS into Parallel System Online
When it has to add one or more UPS into parallel system, perform the operations shown in Figure6-2.
When the added UPS works steadily, it will add into parallel system automatically and achieve
current-sharing.