Sinexcel PWS1-500KTL-NA, User Manual

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22 Chapter V Commissioning and Operation
5.2.3 Shutdown steps
During normal operation of storage inverter, the following steps can be conducted if shutdown is required.
1) On HMI, return to “main wiring diagram”, and click AC/DC module to “shut down”.
2) Normally, main monitoring indicator light flickers in green for about 30s.
3) Disconnect DC breaker(s).
4) Disconnect AC breaker.
As for above operation process, it has been shut down after step 2 is conducted. The power components stop operating in
system, and BUS bar and auxiliary power supply in system still exist for a long time. Therefore, relevant control system is still
in standby state. In this state, device setting and maintenance are not allowed. After step 4 is conducted, the storage inverter
is in a shutdown state, and the internal connector bars are electrically neutral in system. After the internal capacitance in
modules fully discharges, relevant maintenance and setting can be conducted.
5.2.4
Emergency Power Off
When the storage inverter system is abnormal, press the emergency shutdown button “EPO” on the cabinet door and then
conduct steps 3~5 in 5.2.3.
Warning

To prevent personal injury, please use a multi-meter to measure the voltage at input terminal if case maintenance or opening is
conducted. After ensuring that there is no mains supply, relevant operation can be conducted!

After about 15 minutes, the upper cover plate can be opened after DC BUS bar capacitance fully discharges (refer to warning label
on module case surface).