Fronius String Control 250/25 DCD DF - Manual (Page 79)

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Inserting String Fuses
Selecting
String Fuses Only use fuses for solar modules that meet the proper requirements for
string fuses from the solar module manufacturer or as per the „Criteria for
the Proper Selection of String Fuses“ section:
-
max. 20 A per fuse holder
- max. 25 solar module strings
- max. 50 A per measuring channel
- max. 250 A of total input current
- Fuse dimensions: Diameter 10 x 38 mm
Important
-
Please follow solar module safety instructions
- Follow all solar module manufacturer requirements
Inserting
String Fuses NOTE Insert string fuses in the fuse holders corresponding to the
number of available solar modules.
WARNING! An electrical shock can be fatal. Danger from DC
voltage from solar modules.
-
Make sure that the input and output sides in front of the
device are not charged before conducting any connection
or maintenance work.
- Never remove or insert a fuse while it is under load.
- Any and all connections should only be carried out by quali-
fied electricians.
- Follow the safety rules in these operating instructions.
Safety