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Photovoltaic fuses

gPV curve from 1 to 600 A, up to 1500 VDC

SOCOMEC gPV fuses protectphotovoltaic installations against overcurrents caused by reverse currents that can occur in PV applications.

Advantages

High breaking capacity

Up to 50 kA to 1000 VDC, 30 kA to 1500 VDC.

Product dedicated to photovoltaic applications

Operating ranges adapted to low overcurrents specific to photovoltaic systems.

High reliability

• Absolute protection over time guaranteed by the simplicity of manufacture and function (Joule effect).
• No downgrading of fuse characteristics over time.

Improved safety

The energy released whilst eliminating the fault (fuse blowing) is contained within the cartidge (no degassing).

  • Technical Data

    Characteristics used
    • ISC: short circuit current of the string.
    • ISC MAX: short circuit current of the string related to maximum sunlight density.
    • IRM: maximum admitted reverse current.
    • In: fuse rating or fuse rated current (at 25°C in a RM fuse base).
    • Nc: number of strings in parallel.
    • Ue: fuse maximum operating voltage.
    • UOC MAX: maximum open circuit voltage in the lowest temperature conditions.
    When to protect
    A PV string requires an overcurrent protection when its own maximum admissible reverse current characteristic (Irm) is less than the current generated by the rest of the installation (current generated by the other "Nc-1" strings).
    How to protect
    Protection against overcurrents has to be applied to both polarities, regardless of wheather the DC installation is earthed or not.