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This Technical Specification deals with the protection of PV installations against overvoltages. It deals with the protection of the PV installation against surge overvoltages induced by direct and indirect lightning strikes. If such a PV installation is connected to an AC-supply system, this document is applicable as a complement to HD 60364-4-443, HD 60364-5-534, HD 60364-7-712 and CLC-TS 61643-12. Surge protective devices (SPDs) installed on the AC side shall comply with the requirements of EN 61643-11. Because of the special electrical configuration on the DC side of PV installations, only surge protectors which are specially approved for use in PV installations can be used, in order to protect the DC side of such installations. Due to the exposed set up and installation site of the photovoltaic modules particular measures for the protection of the structural installation, even against direct lightning strikes, must be adhered to. Information for this is provided in the EN 62305 standard series. The responsible Committee is Subcommittee UK 441.1 "Überspannungsableiter bis 1 000 V" ("Surge arresters up to and including 1 000 V") of the DKE (German Commission for Electrical, Electronic and Information Technologies) at DIN and VDE.
This document has been replaced by: DIN CLC/TS 50539-12:2014-09; VDE V 0675-39-12:2014-09 .
This document has been corrected by: DIN CLC/TS 50539-12 Berichtigung 1:2011-01; VDE V 0675-39-12 Berichtigung 1:2011-01 .