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Surge Protection
Main Catalogue 2014 / 2015
New ProductsEM 2 DRL earthing module
تلفن: ******** - ********
i [kA] 1 2
Ref.: EN 61643-11 t [μs]
Wave form [μs] 10/350 8/20
imax
[kA] 100 20
Prüfstoßstrom für
Blitzstrom-Ableiter
Test impulse current
for lightning current arresters
Test impulse current
for surge arresters
Figure 4: Test impulse currents for lightning current and surge
arresters.
Air-termination system
Shielding
Lightning equipotential bonding
Lightning current arrester (type 1)
Local equipotential bonding
Surge arrester (type 2/3)
Lightning protection zone
Low-voltage supply system
Information technology system
LPZ 0B
LPZ 0A
LPZ 0B
arresters used at the transition from lightning protection zone 0A to 1 or
0A to 2. These arresters must be capable of conducting partial lightning
currents of 10/350 μs wave form several times without being destroyed
in order to prevent the ingress of destructive partial lightning currents
into the electrical installation of a building. At the transition point from
LPZ 0B to 1 or downstream of the lightning current arrester at the transition point from LPZ 1 to 2 and higher, surge arresters are used to protect against surges. Their task is both to reduce the residual energy of the
upstream protection stages even further and to limit the surges induced
or generated in the installation itself.
The lightning and surge protective measures at the boundaries of the
lightning protection zones described above equally apply to power supply and information technology systems. All measures described in the
EMC compatible lightning protection zone concept help to achieve continuous availability of electrical and electronic devices and installations.
For more detailed technical information, DEHN + SÖHNE offers a free
“Lightning Protection Guide“ which can be downloaded at www.dehninternational.com/en/downloads.
MEB HES
LPZ 0B
LPZ 0B
LPZ 1
LPZ 1
LPZ 1
LPZ 0A
Figure 5.1: Transition from LPZ 0A to LPZ 0B (above): Transitions from LPZ 0A to LPZ 1 and LPZ 0B to LPZ 1 (below)www.dehn.de 9
Planned Safety
Table 1: Definition of lightning protection zones.
IEC 62305-4:2010
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