These supplementary requirements apply to fuse-links for protecting PV strings and PV arrays
in equipment for circuits of nominal voltages up to 1 500 V d.c.
Their rated voltage may be up to 1 500 V d.c.
The object of these supplementary requirements is to establish the characteristics of PV fuselinks
in such a way that they can be replaced by other fuse-links having the same
characteristics, provided that their dimensions are identical. For this purpose, this standard
refers in particular to
a) the following characteristics of fuses:
1) their rated values;
2) their utilisation category;
3) their temperature rises in normal service;
4) their power dissipation;
4) their time-current characteristics;
6) their breaking capacity;
7) their dimensions or size (if applicable).
b) type tests for verification of the characteristics of fuses;
c) the markings on fuses.