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Supplement 3 of the German DIN EN 62305-2 stand- electrodes, manually or industrially produced components and
ard (Supplement 3 of the German VDE 0185-305-2 corrosion protection measures were also added or illustrated
standard): Additional information for the application in figures.
of DIN EN 62305-2 (VDE 0185-305-2)
This supplement includes information and figures to make it Supplement 2 of the German DIN EN 62305-3
easier to use and understand the standard and considers new standard (Supplement 2 of the German VDE 0185-
findings. 305-3 standard): Additional information for special
structures
IEC 62305-3 (EN 62305-3): Physical damage to This supplement includes information on special structures
structures and life hazard such as hospitals, sports grounds, swimming baths, silos with
This part deals with the protection of structures and persons potentially explosive areas, high-rack warehouses, sewage
from material damage and life-threatening situations caused plants and biogas plants, thus taking into account the techno-
by the effects of lightning currents or dangerous sparking, logical development over the last years.
especially in the event of direct lightning strikes. A lightning
protection system comprising external lightning protection Supplement 3 of the German DIN EN 62305-3 stand-
(air-termination system, down-conductor system and earth- ard (Supplement 3 of the German VDE 0185-305-3
termination system) and internal lightning protection (light- standard): Additional information for the testing
ning equipotential bonding and separation distance) serves and maintenance of lightning protection systems
as a protection measure. The lightning protection system is This supplement gives information on the inspection of light-
defined by its class of LPS, class of LPS I being more effective ning protection systems and provides flow charts. Moreover,
than class of LPS IV. The class of LPS required is determined terms and their meaning (e.g. lightning protection specialist)
with the help of a risk analysis carried out in accordance with are defined. This supplement includes figures on the different
IEC 62305-2 (EN 62305-2), unless otherwise laid down in reg- measuring methods for inspecting lightning protection sys-
ulations (e.g. building regulations). tems (contact resistance, earth resistance) and information on
the documentation.
Supplement 1 of the German DIN EN 62305-3 stand-
ard (Supplement 1 of the German VDE 0185-305-3 Supplement 4 of the German DIN EN 62305-3 stand-
standard): Additional information for the application ard (Supplement 4 of the German VDE 0185-305-3
of DIN EN 62305-3 (VDE 0185-305-3) standard): Use of metallic roofs in lightning protec-
Supplement 1 provides more detailed information on Annex E tion systems
“Guidelines for the design, construction, maintenance and Metallic roofs can be used as a natural component of a light-
inspection of lightning protection systems” of the standard. ning protection system. The aim of this supplement is to pro-
It focuses on the dimensioning of the air-termination system, vide additional information on the use of metallic roofs ac-
use of metal components, positioning of air-termination con- cording to the IEC 62305 (EN 62305) standard.
ductors and rods, use of protected volumes, etc. Moreover,
information on the fire behaviour of construction materials Supplement 5 of the German DIN EN 62305-3 stand-
and components is provided. To define the scope of the stand- ard (Supplement 5 of the German VDE 0185-305-3
ard, the fields where special regulations apply are listed (e.g. standard): Lightning and overvoltage protection for
railway systems, electrical transmission, distribution and gen- photovoltaic power supply systems
eration systems outside a structure, pipelines, vehicles, ships, This supplement describes the protection of photovoltaic pow-
aircrafts and offshore systems). er supply systems in case of lightning interference and surges
Moreover, different terms and definitions were defined more of atmospheric origin. The requirements and measures for en-
exactly (e.g. down-conductor system, earth electrode, light- suring the protection, operation and availability of photovol-
ning equipotential bonding) and notes on the correct use of taic power supply systems are described.
aluminium conductors mounted on, in or under the surface,
mortar and concrete were added. The note that it is basically IEC 62305-4 (EN 62305-4): Electrical and electronic
not allowed to use aluminium in the ground is paramount. systems within structures
The use of connecting lines for single earth electrodes is ex- This part deals with the protection of structures with electri-
plained based on several sample figures. cal and electronic systems against the effects of the lightning
electromagnetic impulse. Based on the protection measures
Protection measures against touch and step voltage and the according to IEC 62305-3 (EN 62305-3), this standard also
use of gutters, downpipes and steel columns, natural earth considers the effects of electrical and magnetic fields as well

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