Table of Contents
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Contents
Safety rules ................................................................................................................................................
Protection of Persons and Equipment .......................................................................................................
Safety....................................................................................................................................................
Protection of Persons and Equipment ..................................................................................................
Galvanic isolation..................................................................................................................................
Monitoring the Grid ...............................................................................................................................
FCC compliance ...................................................................................................................................
Ground fault detector / interrupter.........................................................................................................
Standards and regulations ....................................................................................................................
Declaration of conformity ......................................................................................................................
The Fronius IG Unit in the PV System .......................................................................................................
General .................................................................................................................................................
Tasks ....................................................................................................................................................
Converting DC to AC Current ...............................................................................................................
Fully automatic operation management................................................................................................
Display function and data communication ............................................................................................
Data Communications Components .....................................................................................................
Forced Ventilation .................................................................................................................................
Power derating......................................................................................................................................
Fronius IG Installation and Connection ......................................................................................................
Safety....................................................................................................................................................
Connection diagram..............................................................................................................................
Overview ...............................................................................................................................................
Connection Options and Knockouts...........................................................................................................
Connection Options and Knockouts......................................................................................................
Choosing the Location ...............................................................................................................................
Choosing the location in general...........................................................................................................
Choosing a Location for Inside Installation ...........................................................................................
Choosing a location for outdoor installation ..........................................................................................
Fronius IG Installation ................................................................................................................................
General ................................................................................................................................................
Recommended screws for mounting plate assembly ...........................................................................
Attaching the mounting plate - mounting height....................................................................................
Inverter Installation................................................................................................................................
Connecting the Fronius IG to the Public Grid (AC) ....................................................................................
General ................................................................................................................................................
Inverter configuration for connection to grids without neutral ...............................................................
Overview of available grids ...................................................................................................................
Monitoring the Grid ...............................................................................................................................
Systems with more than one inverter....................................................................................................
AC-side terminals and grounding terminals ..........................................................................................
Cross section of AC wires.....................................................................................................................
Safety....................................................................................................................................................
Removing knockouts and mounting conduits .......................................................................................
Connecting the inverter to the public grid (AC) .....................................................................................
Recommendation for the AC-side overcurrent protection.....................................................................
Additional external AC and/or DC disconnect.......................................................................................
Connecting Solar Module Strings to the Fronius IG (DC) ..........................................................................
General information about solar modules .............................................................................................
Safety....................................................................................................................................................
DC terminals .........................................................................................................................................
Solar module ground.............................................................................................................................
Wire cross section of solar module strings ...........................................................................................
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