Sungrow SG125HV-30, User Manual

Page: 66 / 105

56
6 Commissioning
Commissioning is a critical procedure for a PV system, which can protect the
system from fires, and personnel from injury and electrical shock.
6.1 Inspection before Commissioning
Before starting the inverter, you should check the following items.
1. The inverter should be accessible for operation, maintenance and service.
2. Check again to confirm that the inverter is firmly installed.
3. Proper ventilation.
4. The inverter is clean and free of debris.
5. The inverter and accessories are correctly connected.
6. Cables are routed safely place and protected against mechanical damage.
7. The specification of the AC circuit breaker is appropriate for its intended
use.
8. The terminals not used underneath the inverter should be sealed.
9. Warning signs & labels are suitably affixed and durable.
6.2 Commissioning Procedure
If all of the items mentioned above meet the requirements, proceed as follows
to start up the inverter for the first time.
Step 1 Make sure all the above-mentioned items meet the requirements.
Step 2
Close the external AC circuit breaker.
Step 3
Rotate the DC switch to the “ON” position.
Step 4 Use the iSolarCloud App to establish the communication connection with
the inverter through Bluetooth to set the initial parameters. When the
device is initialized, send start instructions via the App For details, please
refer to
“9.5 Login”.
Provided there is sufficient sunlight:

PV arrays initialize and supply DC power to inverter;

DC-link starts to charge and check the state of the utility grid;