Installation and Operating Instructions V03 51
8 Commissioning
8.1 Electrical checks
Carry out the main electrical tests as follows:
① Check the PE connection with a multimeter: make sure that the inverter’s exposed
metal surface has a ground connection.
② Check the DC voltage values: check that the DC voltage of the strings does not
exceed the permitted limits. Refer to the Section 2.1 "Intended use" about
designing the PV system for the maximum allowed DC voltage.
③ Check the polarity of the DC voltage: make sure the DC voltage has the correct
polarity.
④ Check the PV array’s insulation to ground with a multimeter: make sure that the
insulation resistance to ground is greater than 1 MOhm.
Danger to life due to the presence of DC voltage
• Only touch the insulation of the PV array cables.
• Do not touch parts of the sub-structure and frame of PV array.
• Wear personal protective equipment such as insulating gloves.
.
Risk of injury due to incorrect installation
• We strongly recommend carrying out preliminary checks before
commissioning to avoid possible damage to the device caused by
faulty installation.
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