4
Commissioning Guide
4.1 Check before starting
DANGER
Before proceeding to the next step of power on, please read "1 Safety Precautions" carefully and do a
detailed check according to the table below.
In order to avoid danger, the multimeter and other instruments must be used to detect the voltage between
the metal parts in the inverter with the shell (protective ground) of the inverter.
Once the string inverter is installed, the following items need to be checked carefully before
power on.
Mechanical inspection
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Please read "1 Safety Precautions" carefully
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Make sure that the environment of the string inverter is within the normal range.
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Whether foreign objects are left in or on the top of the string inverter cabinet.
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There is enough space around the string inverter to facilitate maintenance and heat dissipation.
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No flammable or explosive items within 2 meters.
□
The cable marking is clear and correct.
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Make sure that there is no condensation inside the string inverter. If found, remove it with a heating tool.
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Make sure that all wiring screws are tightened according to torque requirements.
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Make sure there are no gaps between the input terminal and the waterproof lock.
Electrical inspection
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Make sure the wiring of the string inverter is reliable and the polarity is correct.
□
The power cables and signal lines used are in compliance with electrical safety regulations.
□
The signal wire and power wire should use the matching terminal correctly.
□
Isolation areas and warning signs have been set around the string inverters to prevent others from
misoperation or approaching.
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