Fronius String Control 250/30 DCD DF - Manual (Page 49)

47
EN
Contents
Safety rules ................................................................................................................................................ 49
Explanation of safety symbols .............................................................................................................. 49
General ................................................................................................................................................. 49
Proper use ............................................................................................................................................ 50
Environmental conditions...................................................................................................................... 50
Qualified service engineers................................................................................................................... 50
Safety measures at the installation location.......................................................................................... 50
EMC Device Classifications .................................................................................................................. 51
EMC measures ..................................................................................................................................... 51
Electrical installations............................................................................................................................ 51
Protective measures against ESD ........................................................................................................ 51
Safety measures in normal operation ................................................................................................... 51
Safety symbol ....................................................................................................................................... 51
Disposal ................................................................................................................................................ 52
Data protection...................................................................................................................................... 52
Copyright............................................................................................................................................... 52
General ...................................................................................................................................................... 53
Device concept ..................................................................................................................................... 53
Functional principle ............................................................................................................................... 53
Inverter.................................................................................................................................................. 53
Other system requirements................................................................................................................... 53
Proper use ............................................................................................................................................ 53
Scope of supply .................................................................................................................................... 54
Option ................................................................................................................................................... 54
Terms and abbreviations used.............................................................................................................. 54
Warning notices on the device.............................................................................................................. 55
Description of the device............................................................................................................................ 56
Safety.................................................................................................................................................... 56
Description of the device: housing ........................................................................................................ 56
Description of the device: inside the device.......................................................................................... 57
Installing the Fronius String Control 250/30 DCD DF
Installing the Fronius String Control 250/30 DCD DF ................................................................................
59
Selecting wall plugs and screws ........................................................................................................... 59
Installation position ............................................................................................................................... 59
Selecting a location............................................................................................................................... 59
Installing the Fronius String Control 250/30 DCD DF ........................................................................... 59
Fitting metric screw joints to the Fronius String Control 250/30 DCD DF .................................................. 61
General ................................................................................................................................................. 61
Recommended order in which to insert the metric screw joints............................................................ 61
Fitting metric screw joints to the Fronius String Control 250/30 DCD DF ............................................. 61
Tightening torques for metric screw joints ............................................................................................ 62
Connecting the Fronius String Control 250/30 DCD DF to the inverter ..................................................... 63
Safety.................................................................................................................................................... 63
Connecting aluminium cables ............................................................................................................... 63
Preparation ........................................................................................................................................... 63
Connection with V-type terminal lug ..................................................................................................... 64
Connection with cable lug ..................................................................................................................... 64
Connecting the Fronius String Control 250/30 DCD DF to the inverter ................................................ 64
Connecting solar module strings to the Fronius String Control 250/30 DCD DF ....................................... 65
Safety.................................................................................................................................................... 65
Notes on connecting the solar module strings to the Fronius String Control 250/30 DCD DF ............. 65
Connecting solar module strings to the Fronius String Control 250/30 DCD DF ................................. 66
Criteria for selecting the right string fuses.................................................................................................. 67
General ................................................................................................................................................. 67
Criteria for selecting the right string fuses............................................................................................. 67
Effects of using underrated fuses ......................................................................................................... 67
Fuse recommendations ........................................................................................................................ 67
Application example.............................................................................................................................. 67