Variable sealing end in HVI Lightning Protection

Switch to the new sealing end system and reap the benefits:

With the variable sealing end system, you are much more flexible during installation and save valuable space on the roof. Rigid specifications concerning the separation distance are a thing of the past. This simplifies your day-to-day work and reduces installation time and material expenses.

Gain space

Example of application with separation distance (S_air) of 30 cm: Compared with the previous installation, the variable sealing end saves you 50 % overall length.

HVI light with variable sealing end — With variable sealing end

HVI light - without variable sealing end

HVI light - with variable sealing end

Simplify installation

The sealing end is installed at a ratio of 2:1 – for the entire HVI system.
The length L of the sealing end or adjustment range results from the double radius s (s =equivalent separation distance).

Variable sealing end

Installation instructions

Applications

When do you need an additional sealing end range?

If the HVI Conductor is not connected to the earth-termination system, but to parts carrying lightning voltage, for example, capping of a roof parapet or ring conductor, an additional sealing end range is always required at the exit point.

All versions at a glance

Variable sealing end in HVI Lightning
Protection

Flyer

Online catalogue

HVI light Conductor

HVI light Conductor also allows installations without an equipotential bonding connection to the building or structure at the end of an adjustment range.

The HVI light Conductor is a supplement to the tried and tested HVI Conductor. Due to the defined coupling point, e.g. at the tripod, an equipotential bonding (functional earth conductor) is not necessary. This results in easier installation options and, subsequently, significant time savings during set-up.

Building roof surfaces are commonly the last installation level nowadays. Irrespective of the hazard of possible lightning strikes, pipelines, electrical and information technology systems as well as PV systems are installed on the roof surface. All these systems have conductive connections on the inside of the structure. Partial lightning currents can therefore also get into the interior of the building, where they can compromise or even destroy the sensitive electrical/electronic equipment. Through isolated air-termination systems, this carryover of partial lightning currents into the inside of buildings is prevented.

The HVI light Conductor is the system for maintaining the separation distance on flat roofs. The high-voltage-resistant insulation of the HVI light Conductor prevents uncontrolled flashovers; e.g. through the roofing to metal or electric parts underneath it.

High-voltage-resistant insulated HVI light Conductor for maintaining the separation distance from electrically conductive parts according to IEC 62305-3.
For use up to an equivalent separation distance of s ≤ 45 cm (in air) or s ≤ 90 cm (solid building material).

The HVI light Conductor meets the requirements of DIN IEC/TS 62561-8 (VDE V 0185-561-8).

Processing temperature -5 to +40 °C and permanent temperature range (in case of fixed installation) of -30 to +70 °C to be observed.

HVI long Conductor

HVI Conductor / HVI long Conductor

High-voltage-resistant, insulated down conductor for maintaining the separation distance from electrically conductive parts according to IEC 62305-3.

For use up to an equivalent separation distance of s ≤ 75 cm (in air) or s ≤ 150 cm (solid building material).
The HVI long Conductor meets the requirements of DIN IEC/TS 62561-8 (VDE V 0185-561-8).
Processing temperature -5 to +40 °C and permanent temperature range (in case of fixed installation) of -30 to +70 °C to be observed.

Variable tripod with EB element for HVI Conductor

Stands for holding HVI supporting tubes for internally/externally routed HVI Conductors in/on the supporting tube, with double clamp for connection of 2x Rd 8–10 mm. Adjustable to the roof slope up to max. 10° using a variable fixing on the base holder.

The stackable concrete bases, the plastic base plates and the base holder set for holding additional concrete bases are each available separately in the accessories.

Note: Please contact us here at DEHN to find out whether the material of the roof conductor holders and plastic base plates is compatible with the roof elements.

Spacer for HVI Conductor

Spacer with EB element for HVI power Conductor

Antennas with a radiation characteristic of 360° are used in different fields of radio application. Such antennas usually are known as “omnidirectional antennas” (omni antennas). Typical applications of omnidirectional antennas in practice are private mobile radio (PMR) systems, safety nets and sometimes also GSM networks. In GSM networks, however, they are only applied if there is a low frequency of radio waves.

For omnidirectional antennas it has to be taken into account that metal structures in the direct vicinity have a negative, i.e. attenuating influence on the radiation characteristics. Hence, the father from the antenna, the lower the influence of these structures on the radiation characteristics.
Together with the Kathrein company in Rosenheim, Germany, DEHN carried out measurements for evaluating what kind and size of nearby metal structures interfere the radiation characteristics.

When installing an isolated air-termination systems at an omnidirectional antenna it has to be minded that an isolated air-termination rod provides a sufficient protective angle for the antenna to be protected. A sufficient separation distance s has to be kept as well.

Variable tripod with EB element for HVI power Conductor

Tripod (hinged) with variable spacer for establishing the sealing end of the HVI Conductor.
With UNI earthing clamp for connecting 1x Rd 8-10 mm and 1x conductor 4-50 mm².
Adjustable to the roof inclination up to max. 10°.
The three concrete bases (Part No. 102 075, weight 8.5 kg) and the base plate (Part No. 102 060) must be ordered separately.

Variable tripod with EB element for HVI power Conductor

Tripod (hinged) with variable spacer (small) for establishing the variable sealing end of the HVI power Conductor.
With UNI earthing clamp for connecting 1x Rd 8-10 mm and 1x conductor 4-50 mm².
Adjustable to the roof inclination up to max. 10°.
The three concrete bases (Part No. 102 075, weight 8.5 kg) and base plates (Part No. 102 060) must be ordered separately.

Spacer for HVIpower conductor

Spacer for additional mechanical fastening in the variable sealing end range.
The spacer is erected with two concrete bases (Part No. 102 010, weight 17 kg). Concrete bases and base plate (Part No.Nr. 102 050) must be ordered separately.

Switch to the new sealing end system now and reap the benefits

Create space

Thanks to the flexible installation ratio, you only need the distance actually stipulated. This saves you valuable centimetres. You don’t waste any of the space previously required to meet rigid specifications. Space on roofs is often restricted due to existing rooftop installations.

The result: in the past, alternative cable routes or even conversion work, e.g. on PV and cooling systems, were required to ensure that a lightning protection system was installed in line with the manufacturer’s specifications. In many cases, this additional work and expense can be avoided using the variable sealing end.

Save costs

The space gained saves time and real money. The new sealing end prevents long cable routes or expensive cable systems: Measures which, until now, were necessary when space was limited and which entailed high additional costs.

The variable sealing end goes easy on your resources: It avoids alternative cable routes and the associated additional expense of planning, material and installation.

Increase safety

Another important aspect: The variable sealing end makes it easier for you to meet the manufacturer’s specifications. In the past, lack of space did, on occasion, lead to installation errors. The extra space helps you to correctly install a HVI Lightning Protection system so that it is fully functional and can protect people and buildings from the consequences of a direct lightning strike.

Dimensioning according to EUROCODE also increases your safety. The gust wind speeds are specified in our installation instructions. These are based on the established EUROCODE specifications. Known methods which help you to ensure the correct design of the installation and weight of the concrete base/tripod.

Allow flexibility

The new sealing end in the HVI Lightning Protection portfolio not only provides flexibility due to the flexible installation ratio of 2:1. By gaining space on the roof and avoiding additional installations, you also create space for future roof superstructures.

Requirements on a building change. Space on the roof is required, for example, for retrofitting air-conditioning systems, cell sites or necessary barrier-free conversions (lift shafts). The variable sealing end thus increases space and flexibility in terms of future space requirements on the roof.

Everything to do with HVI Lightning Protection

HVI light

S ≤ 45 cm | HVI light

HVI Conductor

S ≤ 75 cm | HVI Conductor

HVI power

S ≤ 90 cm | HVI power

HVI Lightning Protection – more info

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DEHN Nederland B.V.

T. 085-07 10 280

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