Fitting String Fuses; Safety; Selecting String Fuses - Fronius String Control 250/30 DCD DF Instructions De Service

Fitting string fuses

Safety

Selecting string Select the string fuses to protect the solar modules in accordance with the module manu-
fuses facturer's instructions or as described in the 'Criteria for selecting the correct string fuses'
section:
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IMPORTANT!
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Fitting string fus-
es
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WARNING! An electric shock can be fatal. Danger from DC voltage in solar mod-
ules.
- Make sure that both the input side and output side of the device are de-ener-
gised before attaching any connections.
- Never fit or remove fuses while under load.
- All connections must be made by qualified electricians.
- Note the safety rules in these operating instructions.
max. 20 A per fuse holder
max. 30 solar module strings
max. 50 A per measuring channel
max. 250 A total input current
Fuse dimensions: diameter 10 x 38 mm
Note the safety requirements for the solar modules
Note the requirements of the solar module manufacturer
NOTE! Fit string fuses in the fuse holders according to the number of solar mod-
ules in use.
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