User Manual

1
Contents
General .............................................................................................................................. 3
Functional Principle ....................................................................................................... 3
Other System Requirements.......................................................................................... 3
Device Concept ............................................................................................................. 3
FCC Compliance ........................................................................................................... 4
Standards and Regulations ............................................................................................ 4
Intended Use ................................................................................................................. 4
Abbreviations and Descriptions Used ............................................................................ 4
Product listings and compliance .................................................................................... 4
Scope of Supply............................................................................................................. 4
Product Description ............................................................................................................ 5
Safety............................................................................................................................. 5
Fronius String Control 250/25 - Housing ........................................................................ 5
Fronius String Control 250/25 - Connection Area .......................................................... 6
Selecting a Location ...................................................................................................... 8
Fronius String Control 250/25 Installation .......................................................................... 8
Wall anchors and Screws .............................................................................................. 8
Recommended Screws for Mounting ............................................................................. 8
Installation Position ........................................................................................................ 8
Drilling Pattern ............................................................................................................... 8
Attaching the Fronius String Control 250/25 to a Concrete or Brick Wall ...................... 9
Attaching the Fronius String Control 250/25 to a Wooden Wall ..................................... 9
Attaching the Fronius String Control 250/25 to a Metal Carrier................................... 10
Knocking out Cable Input Openings and Mounting Conduits on the
Fonius String Control 250/25 ............................................................................................ 11
General .........................................................................................................................11
Cable Input Areas ......................................................................................................... 11
Maximum Conduit Size ................................................................................................ 12
Recommendation for Inserting Cables ........................................................................ 12
Preparation .................................................................................................................. 12
Knocking out Cabel Input Openings on the Fonius String Control 250/25 ................... 13
Mounting Conduits on the Fronius String Control 250/25 ........................................... 13
Connecting Solar Module Strings to the Fronius String Control 250/25 ........................... 14
General Information About Solar Modules ................................................................... 14
Safety........................................................................................................................... 14
Necessary Inside Cable Length of the Fronius String Control 250/25 ......................... 15
Notes for Connecting Solar Module Strings to the Fronius String Control 250/25 ....... 16
Connecting Solar Module Strings to the Fronius String Control 250/25 ....................... 16
Connecting the Fronius String Control 250/25 to the Inverter .......................................... 18
Safety........................................................................................................................... 18
Cable Lugs for DC Cable ‘OUT’ ................................................................................... 19
Preparation .................................................................................................................. 19
Connecting DC Cable ‘OUT’ to the Fronius String Control 250/25 .............................. 20
Connecting the Fronius String Control 250/25 to the Inverter ...................................... 20