Page 8 - DEHN-protects-technical-building-equipment

Lightning equipotential protection bonding /

surge protection

Consistent lightning equipotential bonding is an important basis for the safe func-
tioning of the entire lightning protection system. For an effective surge protection 3
concept, it is important to ensure that the three-stage protection principle is ob-
served.

The consequences of a lightning strike are particularly Three-stage protection principle
serious in buildings designed in accordance with Industry In addition to taking the different lightning protection zones 2 5
4.0, in systems for renewable energy generation or in into account, an effective surge protection concept is also
systems with a modern building infrastructure. It is not only based on three protection stages, in which the incoming 4
a matter of destroying valuable system technology, but also energy is gradually reduced to a low level that is safe for 1
of damage resulting from the interruption of operations terminal devices: 6 7
such as failure of work processes, IT systems and manufac- 6 7
turing systems. An important basis for the necessary system ƒ Stage 1: Type 1 lightning current arresters / combined 5 7
availability of such modern building equipment as well as for arresters at the entrance point into the building (lightning
the safe functioning of the entire lightning protection equipotential bonding).
system is a consistent lightning equipotential bonding for all ƒ Stage 2: Type 2 surge arresters usually installed in the
electrical cables entering the building from outside.
downstream sub-distribution boards. Lightning equipotential bonding / surge potection Application / interface Type Part No.
Lightning equipotential bonding (according to IEC 62305-3) ƒ Stage 3: Type 3 surge arresters, which can be installed
is an extension of protective equipotential bonding accor- directly at the terminal device or in socket outlets. 1 DEHNvenCI 1 255 FM Power supply line DVCI 1 255 FM 961 205
ding to IEC 60364-4-41. In addition to all those extraneous Spark-gap-based combined arrester 230 / 400 V
with integrated lightning current
conductive parts which are directly connected to the Interaction of the individual protection stages ensures the arrester backup fuse.
equipotential bonding, the lightning equipotential bonding best possible protective effect. To this end, the relevant
must also encompass the supply lines of the network arresters must be energy coordinated according to
operator, communication lines and other electrical interfaces IEC 60364-5-53 clause 534.
and systems which inject lightning currents into the 2 LSA-plus technology Telecommunication line DRL 10 B 180 FSD 907 401
building. The connection must be made as closely as Modular system of lightning current EF 10 DRL 907 498
and surge arresters, can be combined
possible to the entrance point into the building by way of to a single combined arrester. DRL PD 180 907 430
type 1 lightning current arresters.
3 DEHNgate SAT system / radio-relay DGA GFF TV 909 705
The DEHNgate GFF TV combined arres- system / BOS (emergency
ter protects the SAT system / radio-relay service) radio
antenna at the entrance point into the
Type 1 Type 2 Type 3 building.
lightning current arrester surge arrester surge arrester
4 High-performance isolating spark Gas network TFS 923 023
gap
For indirect connection/earthing of
Sub-distribution board functionally isolated system parts.
Main distribution board terminal device Terminal device
5 DEHNshield TNS AC-supplied charging post or DSH TNS 255 941 400
Allows compact lightning equipotential outdoor lighting system
bonding including protection of termi- 230 / 400 V
nal devices. Supply line

6 DEHNshield TN Power supply toll barrier DSH TN 255 941 200
Prewired, application-optimised
combined arrester for single-phase TN
systems.

7 BLITZDUCTORconnect Data and communication line BCO ML2 BD 24 927 244
Space-saving, modular combined arres-
Charging post or toll barrier
6/4 kV 4/2.5 kV ≤ 1.5 kV ter with a width of 6 mm and push-in
connection technology.
Example of a three-stage protection concept

More information at: Use our online configurators
de.hn/configurators for easy and fast selection

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