Fronius Fronius IG Plus 100, Operating Instructions Manual

Page: 11 / 157

3
Solar Module Ground at Positive Pole: Connecting Solar Module Strings ....................... 50
General ........................................................................................................................ 50
Cable Cross Section of Solar Module Strings .............................................................. 50
Solar Module Ground at Positive Pole: Connecting Solar Module Strings ................... 50
Selecting String Fuses ................................................................................................. 52
Using String Fuses in Fronius IG Plus ......................................................................... 53
Criteria for the Proper Selection of String Fuses .............................................................. 54
General ........................................................................................................................ 54
Criteria for the Proper Selection of String Fuses ......................................................... 54
Effects of using underrated fuses ................................................................................ 54
Fuse Recommendations - Application Example .......................................................... 54
Fuses ........................................................................................................................... 55
Solar Module Ground at Positive Pole: Connecting Solar Module Strings with a Cable
Cross Section > 16 mm² .................................................................................................. 56
General ........................................................................................................................ 56
Additional Required Components ................................................................................ 56
Solar Module Ground at Positive Pole: Connecting Solar Module Strings with a Cable
Cross Section > 16 mm² .............................................................................................. 57
Solar Module Ground at Positive Pole for Fronius IG Plus .............................................. 60
General ........................................................................................................................ 60
Solar Module Ground at Positive Pole ......................................................................... 60
Solar Module Ground at Positive Pole for Fronius IG Plus .......................................... 60
Safety........................................................................................................................... 61
Setting Inverters for Grounded Solar Modules............................................................. 61
Solar Module Ground: Inserting Fuses ........................................................................ 61
Opening Fronius IG Plus for Service/Maintenance ...................................................... 62
Closing Fronius IG Plus ................................................................................................... 63
Closing Fronius IG Plus ............................................................................................... 63
Inserting Option Cards ..................................................................................................... 64
Suitable Option Cards .................................................................................................. 64
Safety........................................................................................................................... 64
Opening Fronius IG Plus ............................................................................................. 64
Inserting Option Cards ................................................................................................. 65
Closing Fronius IG Plus ............................................................................................... 65
Solar Net and Data Interface ....................................................................................... 66
Example ....................................................................................................................... 67
Commissioning ................................................................................................................ 68
Factory Configuration .................................................................................................. 68
Commissioning ............................................................................................................ 68
Operation 69
Fronius IG Plus Device Description ................................................................................. 71
Controls and Indicators ................................................................................................ 71
Display ......................................................................................................................... 71
Startup Phase .............................................................................................................. 73
Test Procedure............................................................................................................. 73
LED Operating Status .................................................................................................. 75