7 Commissioning; Inspection Before Commissioning; Commissioning Procedure - Sungrow SG3KTL-EC User Manual

7 Commissioning
Commissioning is a critical part for a well-installed PV system, which can protect
against fires, injury and electrical shock.

7.1 Inspection before Commissioning

Before starting the inverter, you should check the items as follows.
1. The inverter is accessible for operation, maintenance and service.
2. Re-check and confirm that the inverter is firmly installed.
3. Space for ventilation is sufficient for one inverter or multiple inverters.
4. Nothing is left on the top of the inverter.
5. Inverter and accessories are correctly connected.
6. Cables are routed in safe place or protected against mechanical damage.
7. The selection of AC circuit breaker is optimal.
8. Terminals not used underneath the inverter are sealed.
9. Warning signs and labels are suitably affixed and durable.

7.2 Commissioning Procedure

If all the items mentioned above meet the requirements, proceed as follows to start
up the inverter for the first time.
1. Connect the external AC circuit breaker.
2. Rotate the DC switch to "ON" position.
Suppose there are sufficient sunlight and
enough DC power. PV arrays initialize and
supply DC power to inverter.
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