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Lightning protection/earthing

Installation instructionsHVI®power HVI®power long

Publication No. 1829 / Update 05.16 Mat. No. 3004317 © Copyright 2016 DEHN + SÖHNE

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CONTENTS

1. Application of HVI®power Conductors ........................................................................ 4

2. Safety notes ................................................................................................................. 4

3. SpecificationofHVI®power Conductors ..................................................................... 6

3.1 Design of HVI®power Conductors ............................................................................... 6

3.2 Technical data .............................................................................................................. 7

3.3 Chemical properties ..................................................................................................... 7

4. Different types ............................................................................................................. 8

4.1 Pre-assembled HVI®power Conductors ....................................................................... 8

4.2 Pre-assembled HVI®power Conductors for installation inside the supporting tube .. 9

4.3 Pre-assembled HVI®power Conductors for installation outside the supporting

tube............................................................................................................................ 10

4.4 HVI®power long - on a reel ....................................................................................... 11

4.5 Required accessories, tools and mounting parts ....................................................... 12

4.6 HVI®power Conductors for installation inside / outside the supporting tube .......... 14

5. Assembly of HVI®power Conductors ......................................................................... 16

5.1 Cutting HVI®power Conductors to length / stripping HVI®power Conductors ......... 16

5.2 Mounting the head piece / connection element ........................................................ 17

5.3 Wrapping a heat shrinkable sleeve around the head piece / connection element ... 18

6. Installation ................................................................................................................. 19

6.1 Installing HVI®power Conductors in the supporting tube ......................................... 19

6.2 Installing HVI®power Conductors outside the supporting tube ................................ 21

6.3 Sealing end ................................................................................................................ 22

6.3.1 Sealing end range at the supporting tube based on the example of an antenna ........................22

6.3.2 Variable sealing end ................................................................................................................26

6.3.3 Sealing end at a building’s structure .........................................................................................29

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6.4 Installing HVI®powerConductors ............................................................................... 30

6.5 Installation with regard to the wind zone / wind speed ........................................... 30

7. Checklist for installing HVI® Conductors ................................................................... 32

4

1. Application of HVI®power Conductors

To avoid dangerous flashover between parts of the external lightning protection system and internal in-stallations such as conductive parts (electrical installation, pipework, etc.), the separation distance “s” must be observed when installing lightning protection systems.

High impulse voltages cause flashover on the surface of insulating material if no additional measures are taken. This effect is also referred to as creeping flashover. If the creeping discharge inception volta-ge is exceeded, a surface discharge is initiated which can easily flash over a distance of several metres. To prevent creeping discharges, HVI®power Conductors feature a special outer sheath which allows high lightning impulse voltages to be discharged to a reference potential. For functional reasons, a connection is established in the sealing end range between the semiconductive outer sheath and the building’s equipotential bonding system (no lightning voltage). This connection to the functional equi-potential bonding system can be made e.g. at earthed metal roof-mounted structures located in the protected zone of the lightning protection system, earthed parts of the building’s structure that do not carry lightning voltage or the protective conductor of the low-voltage system.

No conductive or earthed parts may be located in the sensitive sealing end range within the separation distance “s”.

2. Safety notes

 IEC 60417-6182:Installation, electrotechnical expertise

 HVI®power Conductors may only be installed under the conditions shown and referred to in these installation instructions.

 Only qualified and trained personnel (lightning protection specialists) may install HVI®power Con-ductors. We recommend to visit a special training course on HVI® products held by DEHN + SÖHNE (http://www.dehn.de/de/dehnacademy).

 For safety reasons, installation work must be stopped as soon as a thunderstorm approaches / is noticed.

The components of the HVI®power system have been tested as a complete system. Mixing com-ponents of the HVI®power system with components from other manufacturers is not permitted.

5

 Prior to installation, HVI®power Conductors must be examined for good order and condition. If da-mage or any other defect is found, HVI®power Conductors must not be installed. The black sheath of HVI®power Conductors must not be damaged by compressive deformation or cuts.

 When using HVI®power Conductors fire and explosion protection measures must be taken.

 If HVI®power Conductors are installed on thatched roofs (e.g. reed, straw), special installation conditions must be observed for these flammable locations. The special installation conditions for HVI Conductors are described in our Lightning Protection / Earthing main catalogue (HVI Lightning Protection for Thatched Roofs). These conditions also apply to HVI®power Conductors.

 If the supporting tube is led through a roof, the roof must be properly sealed. Warm roofs must be properly sealed and insulated.

 HVI®power Conductors are suitable for outdoor use and can be installed downstream of the sealing end e.g. on roofs, in walls, in concrete (mechanically protected, if required) or on facades / facade constructions. However, the conductors are not suitable for permanent exposure to moisture. HVI®power Conductors must not be installed in the soil.

 Soiled HVI®power Conductors can be cleaned with a cloth soaked with a special cleaning agent (Part No. 297 199). To be able to comply with dangerous goods regulations, this product is only transported within Germany and Austria. ISOPROPYL ALCOHOL (99.1 to 99.9 %) (CSA No. 67-63.0) can be used as an alternative!

 HVI®power Conductors must not be painted due to the special design of the outer sheath.

 The function of HVI®power Conductors is to maintain the separation distance. They do not have a magnetic shielding effect due to their design. Therefore, induction effects in secondary conductors / loops must be observed. If required, surge protection measures must be taken.

 For application-specific questions, please contact the relevant sales team or the DEHN representati-ve in your country.

 It has not yet been checked whether HVI®power Conductors are suitable for use in hazardous areas. Therefore, it is not allowed to use HVI®power Conductors in these areas.

6

3. SpecificationofHVI®power Conductors

3.1 Design of HVI®power Conductors

HVI®power Conductors are high-voltage-resistant, insulated down conductors with a semiconducti-ve outer sheath (see Fig. 1).

They are typically used as insulated down conductors for lightning protection systems to maintain the separation distance in accordance with IEC 62305-3. At first, the separation distance “s” must be calculated as described in 6.3 of the IEC 62305-3standard using a material factor km = 1 in air, or km = 0.5 for solid material. It must be checked whether this calculated separation distance can be imple-mented by means of the equivalent separation distance of the HVI®power Conductor (see technical data, Table 1, page 7):

calculatedseparationdistance≤equivalentseparationdistance.

If this is not the case, the measures described in 6.3, page 22 must be taken.

The length which is required for calculating the separation distance “s” is measured from the head piece to the next lightning equipotential bonding level, e.g. the earth-termination system.

In case of a down conductor with kc = 1, the following maximum conductor lengths are permitted de-pending on the class of LPS:LPS I max. 11.25 mLPS II max. 15.0 mLPS III max. 22.5 m

Figure 1 Design of HVI®power Conductors

stranded copper conductor (25 mm²)

semiconductive outer sheath (outer semiconductor, black)

insulating layer

smoothing layer

7

3.2 Technical data

Outer sheath black, RAL 9011

Equivalent separation distance of the HVI®power Conductor

Air ≤ 0.9 m

Solid material ≤ 1.8 m

Outer diameter 27 mm

Minimum bending radius 270 mm

Permanent temperature range (fixed installation) -30° to +70°C

Ambient temperature and conductor temperature during installation and processing

-5° to +40°C

Maximum tensile load 1,200 N

Stranded inner conductor (copper) 25 mm²

Table 1 Technical data of HVI®power Conductors

3.3 Chemical properties

Halogen-free yes

Reaction to fire not self-extinguishing

Weather-proof (UV-stabilised) yes

Fire load 6.4 kWh/m

Diluents none

Table 2 Chemical properties of HVI®power Conductors

8

4. Different types

The component range of the HVI®power Conductor system consists of a HVI®power Conductor and a range of connection and fixing elements matched to this conductor. Special know-how is required to design and install HVI®power Conductors. HVI®power Conductors are available as pre-assembled conductors or on a 100 m reel (HVI®power long). More detailed information about the component range of the HVI®power Conductor system can be found in our brochures DS210/E and DS212/E, our Lightning Protection / Earthing main catalogue or at www.dehn-international.com.

As a basic principle, all HVI®power Conductors can be shortened, but not extended!

4.1 Pre-assembled HVI®power Conductors

In general, one conductor end of the pre-assembled HVI®power Conductor is fitted with the relevant connection element as (Table 3, page 9 and Table 4, page 10). Thus, the head piece is firmly mounted and a heat shrinkable sleeve is wrapped around it. If required, the second conductor end can be shor-tened to exactly match the loose connection element to the design of the installation.

When ordering HVI®power Conductors, the conductor / minimum length must be observed / indi-cated. This information is binding. Conductors cannot be returned since they are tailored to customer needs (pre-assembled conductor lengths). Pre-assembled HVI®power Conductors are available with a standard / minimum length of 6 m. Customised conductors can be ordered in 0.5 m steps. The stan-dard / minimum length of 6 m must be used in combination with a 3.5 m long supporting tube. A mi-nimum conductor length of 8 m is recommended for a 5 m long supporting tube.

A connection element, heat shrinkable sleeve and hexagon socket wrench are loosely delivered (see also Table 3).

Special tools (HVI®cutter and HVI®strip 27) should be used to cut HVI®power Conductors to length / shorten HVI®power Conductors and the connection element / heat shrinkable sleeve should be at-tached by means of the relevant connection element (see 5., page 16 ff.).

9

4.2 Pre-assembled HVI®power Conductors for installation inside the supporting tube

Pre-assembled HVI®power Conductor for installation inside the supporting tube are used to directly connect the air-termination system of the external lightning protection system to the earth-termination system, e.g. isolated air-termination system of a mobile phone antenna with HVI®power Conductor installed inside the supporting tube.

Pre-assembled HVI®power Conductors for installati-on inside the supporting tube

Part No. Standard / minimum length

Delivery includes

Installation inside the suppor-ting tube

819 160 6 m + x m (max. 22.5 m in case of kc = 1)

• 1 fixed head piece with heat shrinka-ble sleeve

• 1 connection element, 1 heat shrin-kable sleeve and 1 hexagon socket wrench (loose)

Table 3 Table 3 Pre-assembled HVI®power-Leitung for installation inside the supporting tube

HVI®power Conductor with special sheath

Fixed head piece

Loosely delivered:- Connection element- Heat shrinkable sleeve- Hexagon socket wrench

Head piece and HVI®power Con-ductor with heat shrinkable sleeve

inst

alla

tion

insi

de t

he

supp

orti

ng t

ube

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4.3 Pre-assembled HVI®power Conductors for installation outside the supporting tube

Pre-assembled HVI®power Conductors for installation outside the supporting tube are used to di-rectly connect the air-termination system of the external lightning protection system to the earth-ter-mination system, e.g. isolated air-termination system of a mobile phone antenna with HVI®power Conductors installed inside the supporting tube.

HVI®power Conductors may only be installed outside the supporting tube if GRP/Al HVI-power supporting tubes are used.

Pre-assembled HVI®po-wer Conductor for in-stallation outside the supporting tube

Part No. Standard-/ minimum length

Delivery includes

Installation outside the supporting tube

819 165 6 m + x m(max. 22.5 m, in case of kc = 1)

• 1 fixed head piece with heat shrinka-ble sleeve

• 1 fixing ring, 1 contact pin, 1 connec-tion element, 2 threaded pins, 1 heat shrinkable sleeve, 2 hexagon socket wrenches, 2 lock nuts (loosely delivered)

Table 4 Pre-assembled HVI®power Conductor for installation outside the supporting tube

Loosely delivered:-Fixing ring-Contact pin-Connection element-2 threaded pins-Heat shrinkable sleeve-2 hexagon socket wrenches-2 lock nuts

inst

alla

tion

out

side

th

e su

ppor

ting

tub

e

Head piece and HVI®power Con-ductor with heat shrinkable sleeve

Fixed head piece

HVI®power Conductorwith special sheath

11

4.4 HVI®power long - on a reel

HVI®power long Conductors are delivered on a disposable reel or are cut to length. It must be ob-served that the connection set required for installation is not included in delivery. Consequently, the connection set and the required EB connection element(s) must be ordered separately depending on the requirements, type and configuration of the installation (see Table 5). General accessories and tools are listed in Table 6, page 12/13.

HVI®power long Part No. Length Delivery includes Field of application

819 137 100 m Disposable reel with an ou-ter diameter of approxima-tely 900 mm Width: about 474 mm 1 Al-len key and installation ins-tructions

For on-site assembly

819 165 6 m HVI®power, pre-assembled

Installation outside the suppor-ting tube

819 142 Connection set:1 head piece1 connection element2 heat shrinkable sleeves

Head piece and connec-tion element for connec-tion to both ends of the HVI®power Conductor for in-stallation inside the supporting tube

819 149 Connection set, HVI®power long

Installation outside the suppor-ting tube

410 239 EB connection element EB connection element (Ø 27 mm) for controlling the electrical field in the sealing end range. Required for the second sealing end.

105 279 Variable tripod with EB ele-ment for the sealing end, variable height from 610 to 1095 mm (top edge of the concrete base)

Table 5 HVI®power long - Reel and required accessories

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4.5 Required accessories, tools and mounting parts

HVI®power Conductors can be installed using the following mounting parts and tools:

Part No. Delivery includes Description

275 240 Metal conductor holder HVI®power Conductor

Stainless steel conductor holder (Ø 27 to 30 mm), M8 thread

275 249 Metal conductor holder HVI®power Conductor

Stainless steel conductor holder (Ø 27 to 30 mm), M8 thread with plastic base

275 241 Metal conductor holder HVI®power Concdutor

Stainless steel conductor holder (Ø 27 to 30 mm), M6 thread

275 242 Metal conductor holder HVI®power Conductor

Stainless steel conductor holder (Ø 27 to 30 mm), with slot (Ø 5.5 x 10 mm)

597 227 HVI®strip 27 Stripping tool for stranded conductors (Ø 27 mm) con-sisting of a handle and a stripping insert

597 127 HVI®head 27 Stripping insert (Ø 27 mm) for HVI®strip 27 stripping tool

597 032 HVI®cutter Cable pliers for stripping HVI®power Conductors

253 334 Holder for flat roofs (SET) For installing conductors on flat roofs, weight: 8.5 kg

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Part No. Delivery includes Description

253 333 Holder for flat roofs (SET) For installing conductors on flat roofs, weight: 4.6 kg

202 857 Holder for gable roofs Brace with perforated bending points for installing HVI®power Conductors on gable roofs

459 200

459 219

Disconnecting clamp Rd/Rd Rd/Fl

UNI disconnecting clamp Rd

Stainless steel disconnecting clamp (8 to 10 / 8 to 10 mm) with intermediate plate for two round conductors or 8 to 10 / 30 mm for round and flat conductors (200 kA for LPS I)

Stainless steel UNI disconnecting clamp 8 to 10 / 16 mm for connecting an air-termination rod or earth entry rod to a round conductor (200 kA for LPS I)

301 209 KS connector Rd Stainless steel KS connector (10 mm) for connecting round conductors to flat profiles (200 kA for LPS I)

390 209 MV clamp Rd/Rd Stainless steel MV clamp for round conductors (8-10 mm) for universal use as cross, T and parallel clamp(200 kA for LPS I)

392 209 MV clamp Rd/Rd Stainless steel MV clamp for round conductors (8-10 mm / 16 mm) for universal use as cross, T and parallel clamp(200 kA for LPS I)

105 279 Variable tripod with EB ele-ment

For establishing the variable sealing end

105 344 Wall mounting bracket for supporting tubes

Wall mounting bracket, adjustment range from 150 to 200 mm

105 160 Fixing clamp with tensio-ning strap

Clamping range: 50 to 300 mm

Table 6 Accessories and tools

14

4.6 HVI®power Conductors for installation inside / outside the supporting tube

The supporting tubes in which the HVI®power Conductors are integrated house an EB element in the form of a spring element. The head of the supporting tube is mechanically sealed and thus water-proof.

For static reasons, spanning cables over several supporting tubes to split the current is not possible in every situation! Please contact us for more detailed information.

Different types of supporting tubes are available for installing HVI®power Conductors inside / outside the supporting tube (see Table 7., page 14 and Table 8., page 15): HVI®power Conductors may only be installed outside the supporting tube if GRP/Al HVI-power supporting tubes are used.

Types of stainless steel supporting tubes for installation inside the supporting tube

Part No. Consisting of: Component length

To t a l length

Minimum length of the HVI®power Conductors

105 320 Supporting tube 3.5 m 4.5 m 6 m + x m

105 392 Supporting tube with side outlet

Air-termination tip (Ø 10 mm)

1.0 m

105 321 Supporting tube 3.5 m 6.0 m 6 m + x m

105 393 Supporting tube withside outlet

Air-termination tipØ 22/16/10 mm

2.5 m

105 322 Supporting tube 5.0 m 6.0 m 6 m + x m(recommended mi-nimum length: 8 m) 105 394 Supporting tube with

side outlet

Air-termination tip (Ø 10 mm)

1.0 m

105 323105 395

Supporting tubeSupporting tube with side outlet

5.0 m 7.5 m 6 m + x m(recommended mi-nimum length: 8 m)

Air-termination tip Ø 22/16/10 mm

2.5 m

Table 7 Types of stainless steel supporting tubes

optio

nally

ava

ilabl

e w

ith s

ide

outle

t

optio

nally

ava

ilabl

e w

ith s

ide

outle

t

15

Types of aluminium supporting tubes for installation inside / outside the supporting tube

Part No. Consisting of: Com-ponent length

Total length

Minimum length of the HVI®power Conductors

105 503 Supporting tube with side outlet

3.5 m 3.5 m 6 m + x m

105 513 Supporting tube with side outlet and air-termination tip (Ø 10 mm)

3.5 m1.0 m

4.5 m 6 m + x m

105 543 Supporting tube with side outlet and air-termination rod Ø 22/16/10 mm

3.5 m 2.5 m

6.0 m 6 m + x m

105 505 Supporting tube with side outlet

5.0 m 5.0 m 6 m + x m(recommended mini-

mum length: 8 m)

105 515 Supporting tube with side outlet and air-termination tip (Ø 10 mm

5.0 m1.0 m

6.0 m 6 m + x m(recommended mini-

mum length: 8 m)

105 545 Supporting tube with side outlet and air-termination rod Ø 22/16/10 mm

5.0 m2.5 m

7.5 m 6 m + x m(recommended mini-

mum length: 8 m)

105 553 Supporting tube 3.5 m 3.5 m 6 m + x m

105 563 Supporting tube with air-termination tipØ 10 mm

3.5 m1.0 m

4.5 m 6 m + x m

105 573 Supporting tube with air-termination rod Ø 22/16/10 mm

3.5 m2.5 m

6.0 m 6 m + x m(recommended mini-

mum length: 8m)

105 555 Supporting tube 5.0 m 5.0 m 6 m + x m(recommended mini-

mum length: 8m)

105 565 Supporting tube with air-termination tip Ø 10 mm

5.0 m1.0 m

6.0 m 6 m + x m(recommended mini-

mum length: 8m)

105 575 Supporting tube with air-termination rod Ø 22/16/10 mm

5.0 m2.5 m

7.5 m 6 m + x m(recommended mini-

mum length: 8m)

Table 8 Types of aluminium supporting tubes

side

out

let

16

5. Assembly of HVI®power Conductors

5.1 Cutting HVI®power Conductors to length / stripping HVI®power Conduc-tors

The HVI®cutter (cable pliers, Part No. 597 032) can be used to cut HVI®power Conductors to the required length. Ensure right-angled cut!

The stripping tool (Part No. 597 227) allows the outer semiconductive sheath and the PE insulation of the HVI®power Conductor to be easily and reliably stripped without damaging the copper conductor underneath it.

The HVI®strip 27 tool consists of a handle and an exchangeable stripping insert. This HVI®strip 27 stripping insert (Part No. 597 127) can be reordered individually. The stripping insert is plugged into the handle without tools via a bayonet coupling. The stripping length can be adjusted in steps of 0.2 mm by means of the knob housed in the handle. The chosen stripping length is visible on the scale of the handle. The effective stripping length corresponds to the set length with a tolerance of ± 2 mm (see Fig. 2).

The HVI®strip 27 tool is handled as follows: Â Set the stripping length (35 mm) on the tool or check whether the set length is correct. Â Attach the stripping insert of the tool to the cut conductor end. Â The sheath is cut / stripped by turning the handle clockwise and applying light pressure by means of the tool.

Figure 2 HVI®head 27 tool

HVI®power Conductor

bayonet coupling

HVI®head 27stripping insert

Safety note:Do NOT place your finder in the stripping insert.

Risk of injury!!

knob for adjusting the stripping length

scale

HVI®strip 27handle

17

5.2 Mounting the head piece / connection element

To mount the head piece / connection element, the insulation of HVI®power Conductors must be removed by 35 mm.

After removing the insulation, the head piece / connection element is mounted on the conductor ends of the HVI®power Conductor.

The following steps must be observed (see also Fig. 3):

 Position the head piece / connection element above the HVI®power Conductors and turn it clock-wise onto the relevant conductor end as far as it will go. To this end, an open-end wrench (wrench size 19) can be used at the wrench contact surface of the head piece / connection element.

 Tighten the two threaded pins using a tightening torque of 5 Nm. Thus, the copper conductor of the HVI®power Conductors is safely electrically connected (capable of carrying lightning currents).

Figure 3 Mounting the head piece / connection element

35 mm

Ø 10 mm

head piece

connection element

connection element

wrench contact surfacewrench size 19

wrench contact surfacewrench size 19

wrench contact surfacewrench size 19

stranded copper conductor

HVI®power Conductor

threaded pins (coated),tightening torque of 5 Nm

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5.3 Wrapping a heat shrinkable sleeve around the head piece / connection element

Applying heat shrinkable sleeves

After mounting the head piece / connection element to the HVI®power Conductor, a heat shrinkable sleeve must be wrapped around the relevant mounting areas to protect them from mechanical, en-vironmental or chemical influences. The connection set includes two heat shrinkable sleeves.

The following must be observed when wrapping a heat shrinkable sleeve around the head piece / connection element:

 The indicated shrinking area between the head piece / connection element and the HVI®power Conductor must be observed (Fig. 4).

 The heat shrinkable sleeve is applied between the front shrinking area of the relevant head piece / connection element and the HVI®power Conductor. The heat shrinkable sleeves must flush with the shrinking area. If required, they must be repositioned during the shrinking on process.

 The specified shrinking temperature of max. 150 °C must be observed!  The shrinking temperatures in the shrinking area of the HVI®power Conductor must not be too high. In case of excessive shrinking temperatures, the semiconductive sheath of the HVI®power Conductor can be damaged or destroyed and the function of the HVI®power Conductor may not be ensured any more.

 The heat shrinkable sleeve must not trap air or form bubbles!

Figure 4 Wrapping around a heat shrinkable sleeve around the head piece / connection element

Shrinking area of the

head piece

Shrinking area of the

connection elementShrinking area of the

connection element

Incorrect shrinking

Correct shrinking

19

6. Installation

6.1 Installing HVI®power Conductors in the supporting tube

Before installing the supporting tube, insert and fix the head piece of the pre-assembled HVI®power Conductor into the supporting tube and fix it (see also page Figure 5., page 20).

The following steps must be observed:

 Unscrew the locking screw of the head piece (M8 x 25 mm) at the head of the supporting tube.

 Insert the HVI®power Conductor from below into the supporting tube. To this end, the compressive strength of the integrated EB spring element must be overcome. The conductor can be inserted and removed several times. To contact the head piece, insert the HVI®power Conductor into the sup-porting tube as far as it will go and hold it there.

 Firmly tighten the locking screw (M8 x 25 mm) again using a tightening torque of 15 Nm. This en-sures that the head piece is fixed in the supporting tube and that is electrically connected (capable of carrying lightning currents). Make sure that there is a sufficient distance (about 7 mm) between the screw head and the supporting tube after tightening the locking screw. The adhesive coating of the screw only hardens after about 5 minutes so that the screw can be correctly positioned and tightened during this period. After hardening of the adhesive coating, the screw must be replaced by a new one when the screw is removed.

 Check whether the HVI®power Conductor is properly fixed in the supporting tube (see Fig. 5). Proper installation can be verified by slightly pulling the conductor at the point where it leaves the supporting tube.

 The relevant air-termination tip or rod must be installed before or after the supporting tube has been installed depending on the configuration of the installation.

 Insert the air-termination tip or rod from above into the head of the supporting tube and tighten the two locking screws (M8 x 16 mm / M8 x 10 mm) using a tightening torque of 15 Nm.

20

Figure 5 Installation of the head piece in the supporting tube

As-delivered condition Assembled condition

Correct assembly

approx. 13 mm

approx. 0 mm

approx. 7 mm

Incorrect assembly

locking screwhead piece, hexagon screw M8 x 25 mm,tightening torque of 15 Nm

locking screwstightening torque of 15 Nm-air-termination tip 2x M8x16 mm-air-termination rod 2x M8x10 mm

locking screwhead piece(hexagon screw M8x25 mm, tightening torque of 15 Nm)

air-termination rodø = 22/16/10 mm

air-termination tip ø 10 mm

GRP / StSt supporting tube

head of the supporting tube

water-proof

HVI®power Conductor

(as-delivered condition)

optio

nally

ava

ilabl

e w

ith s

ide

outle

t

21

6.2 Installing HVI®power Conductors outside the supporting tube

Attach the fixing ring Remove the Allen screws Tighten the threaded pins M8 x 50

(tightening torque of 15 Nm) Place the contact plate on the threaded pins Install the HVI®power Conductor Mount the self-locking nuts with serrated bea-

ring using a tightening torque of 15 Nm to fix the connection part

Fix the conductor at the fixing ring

Figure 6 Installing the HVI®power Conductor outside the supporting tube

1.

2.3.

4.

5.

6. 15 Nm

7.

sectional view

22

6.3 Sealing end

The calculated separation distance “s" from conductive / earthed parts must be maintained in the sealing end range.

No conductive or earthed parts such as metal con-ductor holders, structural parts, reinforcement, etc., may be installed in the sealing end range, for example:

 At the supporting tube between the head piece and EB connection element (see 6.3.1, page 22)

 Variable sealing end at the ring conductor / capping of the roof parapet (see 6.3.2, page 26)

 Sealing end at the building’s structure bet-ween the EB connection element and the earth connection element.

6.3.1 Sealing end range at the supporting tube based on the example of an antenna

The sealing end range ranges from the connection of the head piece to the EB spring element inte-grated in the supporting tube (see Fig. 7, detail A and B) and can be assumed to run along the entire route of the GRP tube.Due to the mechanical spring contact, acting as an EB element, the HVI®power Conductor (se-miconductive special sheath) is connected to the supporting tube. To this end, the supporting tube must be conductively connected to the next equi-potential bonding system of the installation

The conductive connection between the suppor-ting tube and the earthed metal antenna mast is established by means of e.g. a pipe clamp (Part No. 105 360) (mechanical and electrical connection).

Figure 7 Sealing end range in the supporting tube

seal

ing

end

rang

e

Detail A:connection of the head piece

Detail B:EB spring elementmechanical spring contact

connection of the head pieceDetail A s

α α

EB elementDetail B

antenna mast

pipe clamp

supporting tube

HVI®power Conductor

connection with the equipotential bonding system of

the installation

connection to the earth-termination

system

23

An antenna pipe clamp (Part No. 540 100), for example, can be used to connect the antenna mast to the equipotential bonding system (functional equipotential bonding system).

HVI®power Conductor installed inside the supporting tube with pipe clamp on a mobile pho-ne antenna

Figure 8 Isolated air-termination system with a HVI®power Conductor installed on a mobile phone an-tenna – Pipe clamp

Note:Observe antenna earthing as per DIN VDE 0855!

protective angle acc. to IEC 62305 -3, Table 2

e.g. air-termination tip StSt,(Ø 10 mm, L = 1000 mm), Part No. 101 001

GRP / StSt supporting tube, e.g. Part No. 105 320,supporting tube L = 3500 mm

seal

ing

end

rang

e18

00 m

m

s

e.g. stainless steel pipe clamp,Part No. 105 360clamping range supporting tube Ø = 50 to 300 mm

earth connection element

HVI®power Conductor

connection to the building`s equi-pontential bonding system

earth-termination system

e.g. antenna

α α

24

HVI®powerConductorintegratedinthesupportingtubewithwallfixingbracket

Figure 9 Isolated air-termination system with HVI®power Conductor and wall fixing bracket

protective angleacc. to IEC 62305-3, Table 2

e.g. air-termination rod (Ø 22/16/10 mm, L = 2500 mm), Part No. 103 239

e.g. wall fixing bracket, StSt,clamping range supporting tube Ø = 40 to 50 mm, with double cleat, Part No. 105 344

double cleat for connecting 2x Rd 8 to 10 mm to the equipotential bonding system

earth connection element

HVI®power Conductor

connection to the building´s equipoten-tial bonding system

earth-termination system

α α

seal

ing

end

rang

e18

00 m

m

s

supporting tube with air-termination rod, GRP / StSt,e.g. Part No. 105 321, supporting tube L = 3500 mm + air-termination rod L = 2500 mm

25

HVI®power long Conductor installed inside the supporting tube with side outlet / installation in a tripod or four-legged stand

Figure 10 Tripod / four-legged stand (e.g. Part Nos. 105 390 / 105 391 / 105 490 / 105 491)

Note:For more detailed information on the installation of tripods and four-legged stands, please refer to installation instructions No. 1842 which can be downloaded at www.dehn-international.com in the Download section or enter the relevant Part No. in the Product search on our homepage.

supporting tube

unscrewed clamp

insert supporting tube

tighten supporting tube

stand pipestand pipe

HVI®power Conductor HVI®power Conductor

supporting tube

Example of:tripods / four-legged stands (height of 1750 mm)

26

6.3.2 Variable sealing end

If the HVI®power Conductor is not connected to the earth-termination system, but to parts carrying lightning voltage (e.g. capping of the roof parapet, ring conductor), Table 9 is decisive for the effective length of the sealing end (see also Fig. 11, page 27 and Fig. 12, page 28).No special installation conditions must be observed in the area below the separation distance “s” of 17.5 cm (in air) on the earth connection element (direct connection).Due to the routing of the HVI®power Conductor and the resulting reduced separation distance, it is not common to establish a second sealing end if the separation distance ”s” is ≥ 75 cm (in air).

Table 9 Variable sealing end

The length of the variable sealing end is determined by multiplying the separation distance sair by the factor 2.

Length L of the sealing end = separation distance Sair x 2

Length of the variable sealing end (cm)

200

180

100

35

10 17.5 50 90 Equivalent sepa-ration distance “s” (in air)

maximumHVI®power Conductor

150

75

maximumvariablesealing endHVI®power Con-ductorPart No. 105 279

com

mon

var

iabl

e se

alin

g en

d of

the

HVI

®po

wer

Con

duct

or

27

Variable sealing end at isolated ring conductors / cappings of the roof parapet

If several parts of an installation are to be protected, it is not advisable to lead the HVI®power Con-ductor from each air-termination system to the earth-termination system. The HVI®power Conductor from the air-termination system can be connected to e.g. an isolated ring conductor or to the capping of the roof parapet. From this isolated ring conductor (capping of the roof parapet), several down conductors can routed to the earth-termination system. In this case, the partitioning coefficient kc is reduced downstream of the isolated ring conductor. As a result, the separation distance “s” is also reduced. Pre-assembled HVI®power Conductor or HVI®power long Conductor can be used for this purpose (see Fig. 11 and 12, page 28).

The isolated ring conductor must be installed on spacers and concrete bases e.g. on the roof level while maintaining the calculated separation distance “s”.

Figure 11 Variable sealing end on an isolated ring conductor with HVI®power Conductor

variable sealing endL=Sair x 2

350 mm - max. 1500 mm (standard)

s air

HVI®power Conductor

connection with the building´s equipotential bonding system

isolated ring conductor

spacer

variable tripod stand with EB elementPart No. 105 279

conductor holdere.g. Part No. 253 333

connection element

min

. len

gth,

L =

Sai

r

28

Figure 12 Variable sealing end on the capping of the roof parapet

variable sealing endL=Sair x 2

350 mm - max. 1500 mm (standard)

s air

HVI®power Conductor

connection to the building´s equipotential bonding system

capping of the roof parapet

conductor holdere.g. Part No. 253 333

variable tripod stand with EB elementPart No. 105 279

connection element

min

. len

gth,

L =

Sai

r

29

6.3.3 Sealing end at a building’s structure

If HVI®power Conductor are installed on a building’s structure, the calculated separation distance “s” in the sealing end range must be maintained from the metal parts in the building´s structure.

The sealing end range ranges from the EB connection element to the connection of the earth connec-tion element (see Fig. 13).

The mechanical contact with the EB element (semiconductive sheath) allows to discharge lightning impulse voltages to a reference potential. To this end, a conductive connection to the next equipotential bonding system (equipotential bonding level) of the installation is required.

A UNI disconnecting clamp (Part No. 459 200, 200 kA) is used to connect the earth connection element of the HVI®power Conductor to the earth-termination system.

Figure 13 Sealing end range on a building’s structure

down conductor

seal

ing

end

rang

e35

cm

-180

0 m

m

s

EB

EB connection element Detail A (Part No. 410 239)

earth connection elementDetail B

HVI®power Conductor

connection to the earth-termination system

connection to the building´s equipoten-tial bonding system

Detail A: EB element

Detail B:connection of the earth connection element

holder, e.g. Part No. 275 249

disconnecting clamp, Part No. 459 200

building’s structure

s

30

The following must be observed: Â VThe black surface of the HVI®power Conductor must be cleaned before installing the EB connec-tion element (Part No. 410 329).

 The surface must be smooth and free of grease.  Possible grease must be removed using a cloth soaked with a special cleaning agent (Part No. 297 199).  The EB connection element must not be soiled..  The EB connection element must firmly enclose the HVI®power Conductor.

6.4 Installing HVI®powerConductors

The entire HVI®power Conductor must be installed in the protected zone of the air-termination sys-tem of the external lightning protection system and must not contact parts of the air-termination system, down conductor or structural parts that carry lightning voltage. An exception can be made if the separation distance ”s” at the point where the HVI®power Conductor crosses the part carrying lightning voltage (air-termination system, capping of the roof parapet, down conductor) is ≤35cm(inair)or≤70cm(incaseofsolidmaterial). In this case, the sheath of the HVI®power Conductor can be connected to the part carrying lightning voltage.

If installed downstream of the sealing end range, the HVI®power Conductor must be fixed at inter-vals of ≤ 1 m. The fixing screws of the metal conductor holders must be tightened with a tightening torque of max. 5 Nm.

If the HVI®power Conductor is installed in a structure, protection measures, e.g. fire barriers, must be taken.

6.5 Installation with regard to the wind zone / wind speed

When installing / dimensioning air-termination systems, the wind load or wind power according to Eurocode must be observed. The relevant product is dimensioned for the maximum bending stress and the relevant tilting moment. The wind power is determined based on locational and environmental parameters such as the base wind speed, terrain category and height of the location and object. The combination of the different factors results in the gust wind speed which must be used as a basis for dimensioning and installing air-termination systems and installations. Consequently, the determination of the gust wind speed depends on the relevant object.

More detailed information on this topic can be found in the relevant product catalogue.

31

Note:Wind load calculations based on Eurocode differ due to country-specific definitions. The values given were determined based on the national Annexes for Germany (see lightning protection/earthing cata-logue as of 01.01.2016). Country-specific differences must be observed.

Figure 14 Wind speed – Version I and II for installation on the supporting tube

≤ 2

,5 m

≥ 0

,5 m

antenna mast

antenna

GFK/NIRO supporting tube

1000

mm

≤ 2

.5 m

≥ 0

.5 m

2500

mm

α

α

α

α

connection to the building’s equipo-

tential bonding system earth-termination system

Version Isupporting tube with air-termination tip,

Part No. 105 320 / 105 322, StSt, ø 10 mm, L = 1000 mm

Version IIsupporting tube with air-termination rod,

Part No. 105 321 /105 323, StSt, ø 22/16/10 mm, L = 2500 mm

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7. Checklist for installing HVI® Conductors

If all questions in the below checklist are answered with "yes", it can be assumend that the HVI®po-wer Conductor is installed correctly. The checklist can be downloaded from the Download section of our homepage.

Figure 15 Check list

Checklist for HVI® InstallationAddress of the test object:

Name:

Contact partner:

Street:

Postcode, Place:

Phone:

Item QuestionRating

YES NO

1 Is the whole system positioned in the protected area?

2 Has the separation distance been calculated?(down conductor to the earth­termination system, isolated system with connection to existing external lightning protection system or lightning equipotential bonding on roof level)

3 Is the maximum equivalent separation distance specified by DEHN + SÖHNE for the application of the HVI®Conductor kept? HVI®light Conductor / DEHNcon H s ≤ 0.45 m in air s ≤ 0.9 m solid material HVI®Conductor s ≤ 0.75 m in air s ≤ 1.5 m solid material HVI®power Conductor s ≤ 0.9 m in air s ≤ 1.8 m solid material

4 Is the calculated separation distance kept in the range of the sealing end?

5 Is the supporting tube and, if required, the equipotential bonding element of the sealing end correct, i.e. only connected with the equipotential bonding / the lightning equipotential bond­ing of the system?

6 Is the minimum distance of 0.2 m kept between HVI®Conductors routed in parallel and has the connection to opposite down conductors been considered?

7 Has the minimum bending radius been kept? HVI®light Conductor (dark grey outer coating) 200 mm HVI®Conductor (black outer coating) 200 mm HVI®Conductor (grey outer coating) 230 mm HVI®power Conductor (black outer coating) 270 mm

8 Is the equipotential bonding element of the sealing end in contact with the semiconductive layer (not grey coating)?

9 Has the supplementary information in DEHN installation instructions No. 1501/No.1892been considered for installation of the HVI®/HVI®power Conductor in hazardous areas?

10 Did you exclusively use (tested) components of the manufacturer DEHN + SÖHNE?

DEHN Form No. 2848/E/0815

Company

Place Date

Signature of tester

33

34

35

Surge Protection DEHN + SÖHNE Hans-Dehn-Str. 1 Tel. +49 9181 906-0Lightning Protection GmbH + Co.KG. Postfach 1640 Fax +49 9181 906-1444Safety Equipment 92306 Neumarkt sales@dehn.deDEHN protects. Germany www.dehn-international.com