LBS DRAGON POWER 3, Руководство пользователя, Страница: 41 / 62

4Use and Operation User Manual
34
www.lbspower.com
Start load according to "high power device→small power device", which is to avoid overload
protection when starting high power device.
----End
4.3 Shutdown Operation
Close load and keep the UPS running without load for about10min to exhaust heat.
Press (OFF) button on the front panel for 1s to shut down the UPS.
Switch off the external battery, bypass and mains switch.
----End
4.4 Parallel SystemOperation
4.4.1 Start Parallel System
Before completely starting the parallel system, please do not start load, and ensure that all switches of
output distribution cabinet are off.
Ensure that each unit of parallel system is installed properly, start each unit of parallel system according to the 4.2
Startup Operation one by one.
After each unit in parallel system outputs by inverter, measure the inverter voltage of each paralleled unit. The
voltage difference between max. and min. voltage should be within 8V. Close the breaker of paralleled unit in
parallel distribution cabinet, measure the circulating current of parallel unit, and the current should be less than 3A.
When the voltage different larger than 8V, measure the output voltage of the UPS and check if the
output are all 220V, if the voltage different larger than 15V, please report it to our company to maintain
it. In addition, once the circulating current of parallel unit too large, it will lead to the inverter fault. If
the circulating current larger than 3A, please report it to our company to maintain it.
Switch on the total output breaker of output distribution cabinet, each output branch breaker, and then start the load.