Powering On the SUN2000

Precautions

• Wear personal protective equipment and use dedicated insulated tools to avoid electric shocks or short circuits.

When LED2 is steady green (meaning that the inverter is grid-tied), do not turn on any DC switch. Otherwise, the inverter may be damaged because the insulation resistance is not detected.

• Before turning on the AC switch between the SUN2000 and the power grid, use a multimeter set to the AC position to check that the AC voltage is within the specified range.
• Do not turn the DC switch to the unloaded position.
• When the system is powered on or running, do not place obstacles (such as cables) to block the rotation of the handle or manually hold the handle. Otherwise, the DC switch cannot be automatically disconnected.
• If the solar inverter has been stored for more than two years, it must be checked and tested by professionals before being put into use.

Procedure

1. Turn on the AC switch between the SUN2000 and the power grid.

   If you perform 3 before 1, the SUN2000 reports a fault about abnormal shutdown. You can start the SUN2000 only after the fault is automatically rectified.

2. (Optional) Remove the screws that secure DC SWITCH 1, DC SWITCH 2, and DC SWITCH 3. Store the screws properly for future power-off maintenance.

   For the model used in Australia, perform this step based on the local standards.

   Figure 6-1 Remove the screws
   

3. Set DC SWITCH 1 (MAIN SWITCH) at the bottom of the solar inverter chassis to ON. When you hear a click, the switch is ON.
4. Check the status of the PV connection indicator. If it is steady green, set DC SWITCH 2 and DC SWITCH 3 to ON.
5. Observe the LED indicators to check the SUN2000 operating status.
6. Perform quick settings on the SUN2000 app. For details, see Operations with the SUN2000 App.