14
Criteria for the
Proper Selection
of String Fuses
The following criteria must be met for each solar module string when using fuse protection:
-
I
N
> 1.8 x I
SC
-
I
N
< 2.4 x I
SC
-
V
N
>/= maximum open circuit voltage of pv generator
-
Fuse dimensions: Diameter 10 x 38 mm
I
N
Nominal current of the fuse
I
SC
Short circuit current for standard test conditions (STC) according to solar module
data sheet
V
N
Nominal voltage of the fuse
NOTE!
The nominal current value of the fuse must not exceed the maximum fuse protection
value specified in the solar module manufacturer's data sheet.
If a maximum fuse protection value is not specified, please request it from the solar module
manufacturer.
