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7.2
Requirements of Commissioning
Before commissioning, installation of the DC cabinet and AC cabinet inside the inverter
should be checked thoroughly.
•
Ensure all the cables are connected securely and all bolts are fixed properly.
•
Ensure DC side voltage meets module requirements and the polarity is correct.
•
Ensure AC side voltage meets module requirements.
•
Ensure all cable connections meets related standards and requirements.
•
Ensure the system is properly groundeded and the ground resistance is less than
4Ω.
All commissioning operations during commissioning must be performed by
qualified personnel only.
Commission the device when it is sunny and the environmental conditions are
stable to ensure the successful commissioning.
7.3
Checking before Commissioning
7.3.1 Checking the Cable Connection
•
Check cables for any possible damages or cracks.
•
Check that all cables are connected securely according to the cable connection
diagram. Adjust the cable connection if necessary.
•
Ensure all cable connections are firmly enough. Fix the bolts if necessary.
•
Check the PE equipotential connection. Ensure PE ground point of the internal
devices has been connected to the equipotential connection point in the inverter and
properly grounded. The ground resistance should be no more than 4Ω.
7.3.2 Checking the Inverter Switches
•
Ensure that all DC load break switches in the inverter are in the “OFF” position.
•
Ensure that the emergency stop button is released.
•
Check whether the electric switches and buttons of the inverter and its upstream and
downstream devices can be operated flexibly.
7.3.3 Checking PV Array
Ensure the measuring devices are connected and used correctly. Otherwise,
there will be an electric arc.
System Manual
