SR EN 50539-11:2013
Descărcătoare de joasă tensiune. Descărcătoare pentru aplicaţii specifice care includ curentul continuu. Partea 11: prescripţii şi încercări pentru descărcătoarele din instalaţii fotovoltaice
This European Standard defines the requirements and tests for SPDs intended to be installed on the d.c. side of photovoltaic installations to protect against induced and direct lightning effects. These devices are connected to d.c. power circuits of photovoltaic generators, rated up to 1 500 V. It takes into account that photovoltaic generators: • behave like current generators, • that their nominal current depends on the light intensity, • that their short-circuit current is almost equal to the nominal current, • are connected in series and/or parallel combinations leading to a great variety of voltages, currents and powers from a few hundreds of W (in residential installations) to several MW (photovoltaic fields). The very specific electrical parameters of PV installations on the d.c. side require specific test requirements for SPDs. SPDs with separate input and output terminal(s) that contain a specific series impedance between these terminal(s) (so called two port SPDs according to EN 61643-11) are currently not sufficiently covered by the requirements of this standard a
Status :
Anulat
Data aprobării : 30.09.2013
Data anulării : 03.05.2022
Număr de pagini : 55
ICS : 29.120.50 Sigurante fuzibile si alte aparate de protectie la scurtcircuit
Comitet tehnic : 346 - Protecţia împotriva trăsnetului
- Inlocuit prin SR EN 61643-31:2019
- Modificat de SR EN 50539-11:2013/A1:2015