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8 Starting/Stopping
8.1
Starting
8.1.1
Inspection before starting
After the maintenance or service work, you may start the MV Station. Inspect the following
requirement before starting the MV Station:
All connections are done by strictly following the relevant 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 and the
Start/Stop switch is in the “Stop”
position.
Make sure, via suitable instruments, that there is no ground fault of the PV modules.
Measure the DC and AC current with multimeter to check if they fulfill the MV Station
startup conditions and there is no overvoltage hazard.
After longtime storage, a thorough and professional test is necessary before
starting the MV Station.
8.1.2
Starting Steps
When the abovementioned conditions are fulfilled, proceed as follows to start the MV
Station:
Step 1
Close the upstream and downstream switches of the MV Station.
Step 2
Turn the "AUX SUPPLY" knob switch to the ON position.
Step 3
Manually close the auxiliary power supply switch inside the MV Station and wait the touch
screen to be on.
Step 4
Stop the MV Station through the touch screen.
Step 5
Turn off the "Trip Enable", and turn off the "Door-protect enable" through the screen.
Step 6
Turn the "AC" knob switch to the ON position and manually close the two AC switches
inside the MV Station to wait the MV Station to display the key off state.
Step 7
Turn the "DC" knob switch to the ON position.
Step 8
Perform the start operation through the touch screen, and the MV Station starts
grid-connected operation.
After startup, the MV Station will automatically check if parameters of the DC and AC sides
meet the grid-connection requirements. If so and the set time has been reached, the MV
Station will turn to the OPERATION mode and feed the generated AC current to the grid.
