44
V01
Installation and Operating Instructions
INFORMATION!
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.
WARNING!
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 the PV array.
• Wear personal protective equipment such as insulating gloves.
WARNING!
Danger to life due to the presence of AC voltage!
• Only touch the insulation of the AC cables.
• Wear personal protective equipment such as insulating
gloves.
8 Commissioning
8.1 Electrical tests
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 "Intended use" about designing
the PV system (see section 2.1.6) 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.
⑤
Check the grid voltage: check that the grid voltage at the point of connection of
the inverter complies with the permitted value.