Fronius DC Box 60/12 MET, Operating Instructions Manual

Page: 62 / 68

60
Replacing String Fuses, Maintenance
Safety
Preparation Interrupt the connection to the AC supply lines using the inverter AC disconnector
Disconnect solar module strings from the Fronius DC Box 60/12
Attach a clearly legible and easy-to-understand warning sign to prevent anyone
switching it on again or from reconnecting any open/interrupted connections
Check to make sure that solar module strings are deenergized
Short circuit solar module strings
Remove the cover
Test the fuse holder at the terminal for continuity
Replacing String
Fuses
Find out and correct the cause for the defective fuse
WARNING! Work performed incorrectly can cause serious injury and damage.
Only trained and qualified personnel may carry out the activities described in the
following. Follow the safety rules in these operating instructions.
WARNING! An electric 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 maintenance work.
- Never remove a fuse while it is under load.
1
2
3
4
5
6
7
NOTE! Only use fuses for solar modules that meet the proper requirements for
string fuses.
Fuse dimensions: Diameter 10.3 x 35 - 38 mm
1 2
3