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EN
Contents
Safety rules ................................................................................................................................................ 7
General information 11
Protection of people and equipment .......................................................................................................... 13
Safety.................................................................................................................................................... 13
Protection of people and equipment ..................................................................................................... 13
Galvanic (electrical) isolation ................................................................................................................ 13
Monitoring the grid ................................................................................................................................ 13
Warning notices on the device.............................................................................................................. 14
Proper use ................................................................................................................................................. 16
Proper use ............................................................................................................................................ 16
Application area ................................................................................................................................... 16
Regulations governing the photovoltaic system.................................................................................... 16
Functional principle .................................................................................................................................... 17
Functional principle ............................................................................................................................... 17
Cooling of the inverter through forced-air ventilation ............................................................................ 17
Power derating...................................................................................................................................... 17
Solar module grounding........................................................................................................................ 17
The inverter in a photovoltaic system ........................................................................................................ 18
General ................................................................................................................................................. 18
Tasks .................................................................................................................................................... 18
Converting DC to AC current ................................................................................................................ 18
Display function and data communication ............................................................................................ 18
System add-on...................................................................................................................................... 18
Description of the device............................................................................................................................ 19
Outside of inverter................................................................................................................................. 19
Inverter interior...................................................................................................................................... 20
Connection compartment...................................................................................................................... 21
Data communication area ..................................................................................................................... 22
Possible relay contact functions............................................................................................................ 24
Data communication and Solar Net ........................................................................................................... 26
Solar Net and data interface ................................................................................................................. 26
Overcurrent and undervoltage cut-out .................................................................................................. 26
Description of the 'Fronius Solar Net' LED............................................................................................ 26
Example ................................................................................................................................................ 27
Installation and commissioning 29
Choice of location ...................................................................................................................................... 31
General comments regarding choice of location...................................................................................31
Cabling into the inverter ........................................................................................................................ 31
Criteria influencing choice of location ................................................................................................... 31
Unsuitable locations.............................................................................................................................. 32
Transport.................................................................................................................................................... 33
Transport............................................................................................................................................... 33
Transporting by its lifting eyes using a crane........................................................................................ 33
Transporting by crane using pallet fork................................................................................................. 33
Transporting by forklift truck or lift truck ................................................................................................ 34
Positioning the inverter .............................................................................................................................. 35
Prerequisites ......................................................................................................................................... 35
Positioning the inverter ......................................................................................................................... 35
Notes regarding the air supply .............................................................................................................. 35
Connecting the inverter to the public grid (AC) .......................................................................................... 36
Monitoring the grid ................................................................................................................................ 36
Mains connections ................................................................................................................................ 36
Connecting aluminium cables ............................................................................................................... 36
Max. cross-section of AC cables........................................................................................................... 36
Safety.................................................................................................................................................... 37
Connecting the inverter to the public grid ............................................................................................. 37
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