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7 Commissioning
Commissioning is a critical part for a PV system, which can protect the system from
fires, injury and electrical shock.
7.1 Inspection before Commissioning
Before starting the inverter, you should check the following items.
Ambient Environment
1. Inverter is accessible for operation, maintenance and service.
2. Check again to confirm that the inverter is firmly installed onto the wall.
3. Well ventilation.
4. Leave nothing on top of the inverter.
5. Inverter and accessories are correctly connected.
6. Cables are routed in safe place or protected against mechanical damage.
7. Specification of AC circuit breaker is reasonable.
8. Terminals not used underneath the inverter are sealed.
9. Warning signs & labels are suitably affixed and durable.
7.2 Commissioning Procedure
If all checking items mentioned above meet the requirements, precede as follows to
start up the inverter for the first time.
Step 1
Close the AC circuit breaker.
Step 2
Rotate DC switch to “ON” position.
Step 3
Suppose there are sufficient sunlight and
enough DC power. PV arrays initialize and
supply DC power to inverter. The LCD display is
activated when DC voltage exceeds inverter
startup votlage. If there is a defect on the
display, contact Sungrow.
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