Sungrow SG3425UD-MV, Системное руководство

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8
Starting/Stopping
8.1 Starting
8.1.1 Inspection before Starting
After the maintenance or service work, inspect the following items, and then start the MV
Station,
• All connections are performed by strictly following the installation manual and circuit
diagram.
• The coverings of the internal devices are fixed and secured.
• The cabinet door is closed.
• The emergency stop button is released.
• Make sure, by using suitable instruments, that there is no ground fault in the PV array.
• Measure the DC and AC voltages with a multi-meter to check if the start-up conditions
are met, and ensure no overvoltage hazard.
After longtime storage, a thorough and professional test is necessary before
starting the MV Station.
8.1.2 Start Steps
When the abovementioned conditions are fulfilled, proceed as follows to start the MV
Station:
step 1 Close the upstream PV combiner box and downstream transformer switches of the MV
Station.
step 2 Close the QS6 AC maintenance switch, and QS5 DC maintenance switch.
step 3 Turn the DC knob switch to the ON position.
step 4 Check to make sure the QS9 is connected, and QS8 is disconnected.
step 5 Stop the inverter through the touch screen.
step 6 Manually close the QS1 and QS3 DC load break switches. If the inverter was equipped with
energy storage ports,close QS2 and QS4 as well.
step 7 Perform the start operation through the touch screen, and the MV Station starts grid-
connected operation.
- - End