OBO Bettermann isCon Guida utente
07/2018 EN
isCon® lightning protection
System instructions
Building Connections
© 2018 OBO Bettermann Holding GmbH & Co. KG
Reprinting, even of extracts, as well as photographic or electronic reproduction are prohibited!
isCon® is a registered brand of OBO Bettermann Holding GmbH & Co. KG
OBO isCon
® lightning protection
System instructions
System instructions OBO isCon® lightning protection EN | 3
Table of contents
Inhaltsverzeichnis
1 About these instructions . . . . . . . . . . . . . . . . . . . . .5
1.1 Target group . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
1.2 Using these instructions . . . . . . . . . . . . . . . . . . . . . . . . . 5
1.3 Types of safety information . . . . . . . . . . . . . . . . . . . . . . . . 5
1.4 Correct use . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
1.5 Declaration of conformity . . . . . . . . . . . . . . . . . . . . . . . . . 6
1.6 Basic standards . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
2 General safety information . . . . . . . . . . . . . . . . . . . .7
3 Product description . . . . . . . . . . . . . . . . . . . . . . . .8
3.1 Basic principles . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
3.2 isCon® conductor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
3.3 Insulated air-termination rods . . . . . . . . . . . . . . . . . . . . . . 12
3.4 System accessories for fastening . . . . . . . . . . . . . . . . . . . . 14
3.4.1 Air-termination rod stand . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
3.4.2 Air-termination rod support for isFang mounting . . . . . . . . . . . . . . . . . 17
3.4.3 Bracket for the isCon® conductors . . . . . . . . . . . . . . . . . . . . . . . . 18
3.5 System accessories for connection . . . . . . . . . . . . . . . . . . . 19
4 Planning an installation. . . . . . . . . . . . . . . . . . . . . 20
4.1 Schematic diagram of the isCon® system using the example of the isCon
Pro+ 75 SW . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
4.2 Calculating, checking and maintaining the separation distance . . . . 23
4.3 Conductor lengths and lightning protection classes . . . . . . . . . . 23
4.4 Installation in potentially explosive areas . . . . . . . . . . . . . . . . 25
4.5 Soft-covered roofs . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
5 Installing the isCon® system . . . . . . . . . . . . . . . . . . 28
5.1 Cutting and stripping the isCon® conductor . . . . . . . . . . . . . . . 28
5.1.1 Removing the grey external jacket (isCon Pro+ 75 GR) . . . . . . . . . . . . . 28
5.1.2 Revealing the copper core for connection . . . . . . . . . . . . . . . . . . . . 29
5.2 Mounting the connection elements isCon connect, isCon con 2 and isCon
con PRE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
6 Assembling the air-termination rod . . . . . . . . . . . . . . 33
6.1 Air-termination rod with internal isCon® conductor . . . . . . . . . . . 33
6.2 Air-termination rod with external isCon® conductor . . . . . . . . . . . 39
6.3 Fastening the air-termination rod in the air-termination rod stand . . . 43
6.3.1 Mounting the concrete base . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
6.3.2 Erecting the air-termination rod stand . . . . . . . . . . . . . . . . . . . . . . 43
6.3.3 Fastening the air-termination rod in the air-termination rod stand . . . . . . . . 46
6.4 Fastening the air-termination rod to pipes, a wall or T support . . . . . 48
6.5 Routing the isCon® conductor. . . . . . . . . . . . . . . . . . . . . . 49
6.6 Attaching the potential connection . . . . . . . . . . . . . . . . . . . 50
6.6.1 Installing the potential connection on an insulated air-termination rod . . . . . . 50
OBO Bettermann
4 | EN
Table of contents
6.6.2 Installing the potential connection on the end of the isCon® conductor . . . . . 52
6.6.3 Including the air-termination rod stand in the functional equipotential bonding . 55
6.6.4 Installing additional potential connections . . . . . . . . . . . . . . . . . . . . 55
6.6.5 Creating additional equipotential bonding for isCon Pro+ in potentially explosive
areas . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56
7 Mounting variants . . . . . . . . . . . . . . . . . . . . . . . . 58
7.1 Separate lightning protection ring conductor . . . . . . . . . . . . . . 58
7.2 Metallic roof parapet . . . . . . . . . . . . . . . . . . . . . . . . . . 59
7.3 Internal and external isCon® conductor . . . . . . . . . . . . . . . . . 61
7.4 Lightning protection class I . . . . . . . . . . . . . . . . . . . . . . . 62
7.5 isCon® conductor included in the ring conductor . . . . . . . . . . . . 63
7.6 Protection against touch voltages . . . . . . . . . . . . . . . . . . . . 63
8 Checking the lightning protection system . . . . . . . . . . 65
9 Testing report for the OBO isCon® system . . . . . . . . . . 66
10 Selection aid . . . . . . . . . . . . . . . . . . . . . . . . . . . 67
System instructions OBO isCon® lightning protection EN | 5
About these instructions
1 About these instructions
1.1 Target group
These mounting instructions are intended for specialists, who are
qualified to erect lightning protection systems, e.g. lightning protection
specialists. These specialists must know the lightning protection
standards applicable at the mounting location, as well as the generally
recognised rules of technology.
1.2 Using these instructions
• These instructions are based on the standards valid at the time of
compilation (July 2018).
• Before commencing work, read these instructions through once com-
pletely. In particular, please observe the safety instructions.
• Keep all the documents supplied with the isCon® system safe, so that
the information is available should you need it.
• We will not accept any warranty claims for damage caused through
non-observance of these instructions.
• Regional and seasonal factors were not taken into account.
• To find out more about planning and installation of the OBO isCon®
system, we recommend a comprehensive training course.
1.3 Types of safety information
WARNING
Type of risk!
Shows a possibly hazardous situation. If the situation is not avoided, then
death or serious injury may result.
CAUTION
Type of risk!
Shows a possibly hazardous situation. If the situation is not avoided, then
light or minor injury or damage to property may result.
ATTENTION
Type of risk!
Shows a possibly damaging situation. If the situation is not avoided, then
damage to the product or the surroundings may occur.
Note! Indicates important information or assistance!
1.4 Correct use
The OBO isCon® system is a lightning protection system for the external
lightning protection of buildings and systems, which, in the case of direct
lightning strikes, can conduct the lightning surge currents into the earth,
thus protecting the building, the system and people against the impacts of
the lightning strike, e.g. fires, mechanical building damage and possibly
lethal voltages and current pulses.
OBO Bettermann
6 | EN
About these instructions
The system is not designed for any other purpose than the one described
here. If the system is installed and used for another purpose, any liability,
warranty or damage claims shall be rendered null and void.
If you require information on the use of the OBO isCon® system for some-
thing other than under the conditions of use described here, please speak
to your OBO contact.
1.5 Declaration of conformity
Lightning protection components are not subject to an EU directive. In-
stead, OBO makes the manufacturer's declarations of conformity avail-
able for the appropriate components of the lightning protection systems.
These declarations of conformity certify the agreement with the named
standards and stored documents, but do not, however, contain any guar-
antee of properties.
You can find individual proofs for lightning protection components on the
OBO web pages (www.obo-bettermann.com).
1.6 Basic standards
Comply with the following standards*, amongst others, during the plan-
ning, mounting, maintenance and repair of lightning protection systems:
• DIN EN 62305-1 ED2 (IEC 62305-1, VDE 0185-305-1),
Protection against lightning Part 1: General principles
• DIN EN 62305-2 ED2 (IEC 62305-2, VDE 0185-305-2),
Protection against lightning Part 2: Risk management
• DIN EN 62305-3 ED 2(IEC 62305-3, VDE 0185-305-3),
Protection against lightning ‒ Part 3: Protection of structural facilities
and persons
• DIN EN 62305-4 ED 2 (IEC 62305-4, VDE 0185-305-4),
Protection against lightning ‒ Part 4: Electrical and electronic systems
within structures
• DIN EN 62561-1 ED 2 (IEC 62561-1, VDE 0185-561-1),
Lightning protection system components – Part 1: Requirements for
connection components
• DIN EN 62561-2 ED2 (IEC 62561-2, VDE 0185-561-2),
Lightning protection system components – Part 2: Requirements for
conductors and earth electrodes
• DIN EN 62561-4 ED2 (IEC 62561-4, VDE 0185-561-4),
Lightning protection system components – Part 4: Requirements for
conductor fasteners
• DIN 18014, Foundation earthers
• IEC TS 62561-8:1-2018, Lightning Protection System Compo-
nents (LPSC) – Part 8: Requirements for components for isolated
LPS
• DIN 18531-1, Waterproofing of roofs, balconies and walkways – Part
1: Non-utilised and utilised roofs – Requirements and principles for
execution and design
• IEC 60332-1-2, Tests on electric and optical fibre cables under fire
conditions – Part 1–2: Test for vertical flame propagation for a single
insulated wire or cable
* Status of standards: July 2018
System instructions OBO isCon® lightning protection EN | 7
General safety information
2 General safety information
Observe the following general safety information on handling the OBO
isCon® system:
• The work may only be carried out by lightning protection specialists
who have been trained for the installation of standard-conformant
lightning protection systems.
• If there is a lightning strike, lethal currents can flow through the light-
ning protection system. Never work on the elements of the lightning
protection system during a thunderstorm or if there is the risk of one.
• Lethal voltages can occur during the handling of electrical resources.
Therefore, never work on parts through which power is flowing. Wear
suitable protective clothing and comply with all the required safety
guidelines!
• To install the OBO isCon® system, use only components of the OBO
product range, as otherwise there is no guarantee that safe installation
is possible.
• The jacketing of the grey isCon® conductor may be painted a different
colour. It does not possess any electrical properties which could be
at risk from paint. This does not apply when the conductor is used as
protection against touch voltages.
• The production method means that metallic objects may have areas
with sharp edges. Wear suitable protective gloves to avoid cutting
injuries.
• When erecting systems for maintaining electrical functionality, take the
necessary fire protection regulations into account. These instructions
do not mention any fire protection standards which are to be complied
with. Read the OBO fire protection guide (order no.: 9134859) for more
information.
• The arresting system and any possible fire insulation must be
matched.
OBO Bettermann
8 | EN
Product description
3 Product description
3.1 Basic principles
Without any additional countermeasures, the high voltage pulses which
occur when there is a direct lightning strike will cause arcing to insulation
surfaces. This effect is termed a creep flashover. When the so-called
creep discharge inception voltage has been exceeded, surface discharge
is initiated, which can bridge a gap of several metres. To avoid dangerous
arcing between conductive parts (electrical systems, pipelines, etc.), the
maintenance of the separation distance is a key requirement when plan-
ning and implementing a lightning protection system.
These days, the roof level of building complexes is used as an installation
area for air-conditioning, ventilation, transmission and energy collection
systems, meaning that the structural features may be in the way of the
required spacing between the air-termination systems and the electrical
installations.
The isCon® insulated lightning protection system is used to maintain the
required separation distance. Depending on the design, after the first
potential connection behind the connection element on the air-termination
rod, the isCon® conductor reflects an equivalent separation distance of
up to 0.45‒0.9 metres in the air or double that in solid matter. This means
that installation is possible directly on metallic and electrical structures. If
there is a direct lightning strike, the incoming energy is arrested through
the isCon® conductor to the building's earthing system. There is no direct
arcing between the conductor and the building to be protected.
The isCon® system is tested according to IEC TS 62561-8 and has an
arresting capacity of 150‒200 kA lightning surge current (10/350 μs),
depending on the conductor. It primarily consists of the following compo-
nents:
– isCon® conductor
– Insulated air-termination rods
– System accessories for fastening (air-termination rod stand, support
and holder)
– System accessories for connection
3.2 isCon® conductor
According to DIN EN 62305-3/VDE 0185-305-3/IEC 62305-3, the insu-
lated isCon® conductor implements a separation distance of 0.45‒0.9
metres in the air and 0.9‒1.8 metres in the case of solid materials, de-
pending on the product design. The isCon® conductor is equipped with an
external semi-conductive jacket, allowing it to limit high lightning voltage
pulses against a reference potential, by creating a connection between
the external semi-conductive jacket and the building's equipotential
bonding, which is not energised with lightning current, in the area of the
connection element.
The isCon® conductor is flame-resistant according to DIN EN 60332-1-2,
weather-resistant and halogen-free. It is suitable for routing in external
areas and can be routed on roofs, in walls, in concrete, in facade installa-
tions or in buildings.
System instructions OBO isCon® lightning protection EN | 9
Product description
The isCon® conductor is sold by the metre and in five variants:
Conductor type Characteristic Article no.
isCon PR 90 SW (Premium) Black 5408 018
isCon Pro 75 SW Black 5408 008
isCon Pro+ 75 SW Black 5408 002, 5408 004,
5408 006
isCon Pro+ 75 GR Grey 5407 995, 5407 997
isCon BA 45 SW (Basic) Black 5408 014
Tab. 1: Product variants, isCon® conductor
The grey isCon® conductor is also suitable for routing in the earth. The
conductor was tested according to VDE 0185-305-3 (IEC/EN 62305-3)
with a pulse voltage of min. 100 kV (1.2/50 μs) in rain and can be used
up to a length of max. 5 m for protection against touch voltages. If the
conductor is not used as protection against touch voltages, then colour-
ed painting, e.g. with facade paint, is also possible. As the external grey
jacket is non-conductive, it must be removed in the contact areas.
35 mm²
Ø 23 mm
Ø 26 mm
1
2
3
6
5
4
Fig. 1: Schematic diagram of the isCon® conductors Pro+ 75 SW and
Pro+ 75 GR
35 mm²
x
x = Ø 20 mm
(Pro 75 SW/BA 45 SW)
x = Ø 23 mm
(PR 90 SW)
1
2
3
4
Fig. 2: Schematic diagram of the isCon® conductors Pro 75 SW, BA 45 SW and
PR 90 SW
Legend:
1
Round conductor, multi-wire, 35 mm2, Cu
2
Inner conductive layer
3
Insulation
4 Black, weakly conductive layer
OBO Bettermann
10 | EN
Product description
5
Protective jacket
6
External jacket, grey
The isCon® conductor may only be connected to air-termination rods or
forwarding systems using system-tested OBO connection elements (see
also “5.2 Mounting the connection elements isCon connect, isCon con 2
and isCon con PRE” on page 30).
Type isCon BA 45
SW
isCon Pro 75
SW
isCon Pro+ 75
SW
isCon Pro+ 75
GR
isCon PR 90
SW
Colour Black Black Black Grey Black
Equivalent separation distance,
air (cm)
≤ 45 ≤ 75 ≤ 75 ≤ 75 ≤ 90
Equivalent separation distance,
solid materials (cm)
≤ 90 ≤ 150 ≤ 150 ≤ 150 ≤ 180
Equivalent separation distance,
mixed materials See EN 62305-3
External diameter ~ 20 mm ~ 20 mm ~ 23 mm ~ 26 mm ~ 23 mm
Round conductor, multi-wire, Cu 35 mm2
Cable weight ~ 0.570 kg/m ~ 0.570 kg/m ~ 0.694 kg/m ~ 0.868 kg/m ~ 0.666 kg/m
Temperature range for routing min. –5 °C, max. 40 °C
Operating temperature min. –30 °C, max. 70 °C
Bend radius min. 200 mm min. 200 mm min. 230 mm min. 260 mm min. 230 mm
Maximum tensile load 1, 750 N
Routing in the earth No No No Yes No
Can be painted No No No Yes
(does not apply
when used as
protection
against touch
voltages)
No
Protection against touch
voltages
No No No Yes No
Weathering resistance (UV-
stabilised)
Ozone resistant according to DIN EN 60811-2-1 Section 8
Sunlight Resistance Test according to UL 1581 Section 1200
Coldness impact resistance according to-DIN EN 60811-1-4 Section 8.5
Fire load (kWh/m) 3.3 4.3 5.1 4.2
Fire behaviour
Self-extinguishing
n/a n/a Yes Yes n/a
Lightning current carrying
capacity (class/Iimp (kA)
H1/150 H1/150 H1/150 H2/200
Testing certificate according to
IEC TS 62561-8 Yes
Halogen-free Yes
Softener None
Tab. 2: Technical data of the isCon® conductors
Indice
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