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9 System Commissioning
9.1 Checking before Power-on
No. Item Checking details
1 Installation
The inverter is installed correctly and securely.
The battery is installed correctly and securely.
Other device (if any) is installed correctly and securely.
2 Wiring
All DC, AC cables and communication cables are connected
correctly and securely;
The meter/CT is connected correctly and securely.
The ground cable is connected correctly and securely;
3 Breaker All the DC breakers and AC breakers are disconnected;
4 Connector
The external AC and DC connectors are connected; The AC
protective cover on the Grid and EPS (off-grid) terminal is
connected correctly and securely.
5 Unused terminal
Unused terminals and ports are locked by waterproof caps.
Unused PV terminals are locked by dustproof buckles.
6 Screw All the screws are tightened.
9.2 Powering on the System
Step 1: Turn on the DC switch and check the LCD screen.
»
If the LCD screen is not on, turn off the DC switch and check whether the PV
polarity is connected correctly.
»
If the error of any channel of PV is displayed on LCD, turn off the DC switch
and check the corresponding channel of PV connection.
Figure 9-1 Turning on the DC switch
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