51
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 and downstream switches of the MV Station.
step 2
Manually close the auxiliary power supply switch inside the MV Station and wait the
touch screen to power on.
step 3
Stop the MV Station through the touch screen.
step 4
Turn off “Trip” and “Door-protect enable” through the touch screen.
step 5
Manually close all DC switches inside the DC cabinet.
step 6
Perform the start operation through the touch screen, and the MV Station starts grid-
connected operation.
-- -- E
En
nd
d
After startup, the MV Station will automatically check if parameters of the DC and AC
side meet the grid-connection requirements. If so and the set time have been reached,
Summary of Contents for SG4950HV-MV
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