74 Installation checklist
Mechanical installation (see Mechanical installation on page 49)
Check that:
The mechanical installation and markings correspond to the system’s layout and design
drawings.
The installation location is properly selected.
There is sufficient free space around the unit (see Dimension drawing on page 121).
The cooling air is able to flow freely (see Required clearances for cooling on page 123).
The ambient operating conditions are allowed (see Environmental data and requirements
on page 115).
The inverter is properly fastened to the installation base and secured to mounting plate.
There are no tools, foreign objects or dust from drilling outside or inside of the inverter.
The type labels or the inverters are intact and visible for the user.
The PVS300 user’s guide is situated at the inverter where users can find it.
Electrical installation (see Electrical installation on page 57)
Check that:
The electrical installation and markings correspond to the system’s wiring diagrams.
The electrical installation and markings correspond to the AC distribution board wiring
diagrams.
The electrical ratings of solar array and other system components are compatible with
inverter.
The solar array and string voltages are not exceeding the nominal input voltage of the
inverter.
The AC line (grid) voltage matches the nominal output voltage (230 V AC) of the inverter.
The DC power cable connections at DC+ and DC- connectors and their locking are OK.
Unused DC input connectors have sealing caps on.
The DC string fuses have adequate nominal ratings (see DC Input data and solar array
requirements on page 113).
There are string fuses inserted in every input of the inverter.
The insulation of the assembly is sufficient. See Checking the insulation of the assembly
on page 58.
The inverter has a proper connection to Protective Earth. See Grounding safety (PE) on
page 14.
The AC power cable connections at L, N and PE and their tightening torques are OK. See
AC cabling connection procedure on page 65.
The power cables are routed separately from other cables. See Routing the cables on
page 58.
The external control connections to the inverter are OK. See Connecting the control
cables on page 66.
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