DC - distribution and protection

Protection on the DC side of a PV system

The direct current section of a typical photovoltaic system consists of a generator formed by the parallel of the strings of solar panels connected in series.

Along with the specific characteristic of the solar modules (inability to shut off the voltage other than by obscuring the solar panels and generation, by the strings, of short-circuit currents with values very near to those produced in normal conditions), the presence of voltage as high as 300-600 V d.c. and beyond requires a very careful assessment of the protection and isolating devices, which must be able to suppress direct fault currents under high voltages within a very short time.

Features of ETI junction boxes

• Easy to install and operate,

• Short mounting times,

• Ample wiring space

How to choose correct protection for PV junction boxes

Standard junction box 1 x OUTPUT

Standard junction box 2 x OUTPUTS

Standard junction box 3 x OUTPUTS

Catalog

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