This Outline of Investigation applies to Fuses for Photovoltaic Systems rated up to 1500 V dc. Fuses for Photovoltaic Systems are intended to be used for the protection of strings or arrays of Photovoltaic cells and their associated wiring to provide protection against overloads or low-level short circuits. These types of fuses are not intended to protect downstream inverter components@ such as capacitors or the discharge of such capacitors back into the arrays or the array wiring. Such protection must be achieved by providing suitable separate capacitor fuses designed@ intended and rated for that purpose.
UL 2579 BULLETIN-2009 history
2009UL 2579 BULLETIN-2009 UL Standard for Safety OUTLINE OF INVESTIGATION FOR LOW-VOLTAGE FUSES – FUSES FOR PHOTOVOLTAIC SYSTEMS