AIR-TERMINATION SYSTEMS AND ACCESSORIES

Transcription

1 A Concrete Bases For air termination rods, for protection of minor roof superstructures on flat roofs or for installing distance holders of the DEHNiso Distance Holder programme for e.g. isolated ring conductors B A B C D E Diameter Wedge/Adapter PU Part Weight Ø Material material pc(s) No. A MODEL Wedged, stackable, for air-termination rods Ø16 mm, chamfered or diminished, or DEHNiso distance holder Ø16 mm 17 kg 337 mm concrete (B55) StSt (V2A) C D B MODEL Wedged, for air-termination rods, 1000 mm long, Ø10 mm or DEHNiso distance holder, up to 675 mm long, Ø16 mm (distance 1 m) 8.5 kg 240 mm concrete (B55) StSt (V2A) C MODEL Wedged, with adapted flat washer, stackable 17 kg 337 mm concrete (B55) StSt (V2A) D MODEL With threaded adapter, for air-termination rods with M16 thread 17 kg 337 mm concrete (B55) plastic E MODEL With threaded adapter, for air-termination rods with M16 thread and additional fixing with e.g. distance holder 8.5 kg 240 mm concrete (B55) plastic E 27

2 Flat Washer For protection of the roof sheetings under the concrete base A A B Diameter Diameter PU Part Ø (d1) Ø (d2) Material Colour pc(s) No. A MODEL For concrete bases (Part Nos , ) 370 mm 360 mm EVA B B MODEL For concrete bases (Part Nos , ) 280 mm 270 mm EVA

3 Installation Installation of air-termination rods or ring conductors with concrete bases under consideration of the different wind load zones according to DIN 4131 zone IV Kiel Rostock zone III Bremen Hamburg Schwerin zone II Berlin Hannover Potsdam Magedburg Essen Dortmund Düsseldorf Köln Erfurt Halle Leipzig Dresden Chemnitz Bonn Wiesbaden Frankfurt zone I Würzburg Nürnberg Saarbrücken Mannheim Stuttgart Regensburg Freiburg Augsburg München Zone I II III IV Dynamic pressure q [kn/m 2 ] Wind Wind velocity strength v [km/h] Fig. 1: Division of Germany into wind load zones and corresponding values of dynamic pressure and maximum wind velocity Ref.: DIN 4131: Steel radio towers and masts, Berlin: Beuth-Verlag GmbH The following data about the height of the ring conductor (solid round conductor Al D = 8 mm), distance and type or quantity of concrete bases are based on wind load zone II. The calculations are based on the following parameters: Ground level up to 600 m above sea level (asl) Ground level up to 40 m Constant dynamic pressure No natural oscillations No additional safety coefficients as well as No ice foundations Air-termination rod Zone I Zone II Zone III Zone IV Height of ring conductor Distance of concrete bases Middle/Middle 1.5 m 2.0 m 2.5 m on request 675 mm 1000 mm 1000 mm 1200 mm 1500 mm 1200 mm 3.0 m on request on request The above applies to all reduced air-termination rods. The distance holder has to be installed approximately in the middle of the air-termination rod. Legend: 1 x Concrete Base (weight 8.5 kg), Part No x Concrete Base (weight 17 kg), Part No x Concrete Base, stacked (weight 34 kg), Part No x Concrete Base (weight 17 kg), Part No with distance holder out of GFP, Part No

4 Adapter for Air Termination Rods For uprighting air termination rods at roof inclinations up to 10, for wedged concrete bases (Part No or ) Angle of Support Clamping Bolt Screw PU Part inclination material range material type Screw pc(s) No. up to 10 degrees St/tZn 16 mm StSt (V2A) M8/M10 mm StSt (V2A) Rod Holder for Gable Roofs For use as foot for fixing air termination rods on gable roofs with protection against twisting (toothed washer) and lock nut. The air termination rod has to be fixed additionally, e.g. to the chimney with DEHNiso distance holder Bolt Brace CH Screw/Nut PU Part Material material length Rd material Screw pc(s) No. St/tZn StSt (V2A) 475 mm 16 mm StSt (V2A) di M8x

5 For sealing the ends of air termination conductors Air Termination Tips A A B B Conductor PU Part Material Rd Length Outer Ø pc(s) No. A MODEL For steel or aluminium conductors ZDC 7-10 mm 29 mm 15 mm B MODEL For copper conductors Ms/gal Cu 8 mm 29 mm 14 mm Mushroom-type Collectors For walkable and drivable flat roofs, e.g. parking levels Clamp Collector Rd/Fl Installation Levelling PU Part material material connection depth range Standard pc(s) No. St/tZn G-AlMg / 30 mm min. 60 mm 25 mm DIN For details please see also installation instructions No

6 Roof Bushings For penetrating and sealing roofs to install down conductor systems A A B Bushings Bushings Diameter PU Part Material Colour Rd Fl Ø pc(s) No. A MODEL For flat roofs (height approx. 113 mm) plastic 1 8 / 10 / 16 mm 20x2.5 / 30x3.5 mm 250 mm B B MODEL For tile roofs and corrugated roof sheetings (borehole Ø16 mm) plastic mm 34 mm Note on Part No : For installation heights of more than 100 mm, wrap the roof bushing and conductor with a self-adhesive universal sealing tape (aluminium fixing tape). 32

7 DEHNiso Distance Holder Angled support with saddle clamp Distance holder with attachment, fixing socket connector and tightning strap Angled fixing plate Variable angled support with pipe clamp Installed air-termination system with distance holders and concrete bases Ref.: Wettingfeld Lightning Protection, Krefeld, Germany 33

8 DEHNiso Distance Holder I Variable range of holders for conductors and air termination rods for keeping the separation distance. Allows for fixing of air-termination rods, distance rod made of glass fibre reinforced plastic (GFP), Ø16 mm, UV-stabilised, light grey colour For determining the separation distance (length of the distance rod), the material factor k m = 0.7 is used. 1 m distance rod corresponds to an equivalent clearance of 0.7 m. A A B C D B CH CH CH Length Insolating Fixing Plate PU Part Rd height material (l1) distance hole Ø material pc(s) No. A MODEL Distance holder with twin screw cleat and fixing plate 16 mm 20 ZDC-St/tZn 530 mm 445 mm 8x5.1 / 4x7 / 2x11 mm StSt (V2A) mm 20 ZDC-St/tZn 690 mm 605 mm 8x5.1 / 4x7 / 2x11 mm StSt (V2A) mm 20 ZDC-St/tZn 1030 mm 945 mm 8x5.1 / 4x7 / 2x11 mm StSt (V2A) mm 20 ZDC-St/tZn 530 mm 445 mm 8x5.1 / 4x7 / 2x11 mm StSt (V2A) mm 20 ZDC-St/tZn 690 mm 605 mm 8x5.1 / 4x7 / 2x11 mm StSt (V2A) mm 20 ZDC-St/tZn 1030 mm 945 mm 8x5.1 / 4x7 / 2x11 mm StSt (V2A) B MODEL Distance holder with DEHNgrip conductor holder and fixing plate, loose conductor leading 8 mm 20 StSt (V2A) 690 mm 605 mm 8x5.1 / 4x7 / 2x11 mm StSt (V2A) C MODEL Distance holder for concrete bases (Part No ) with DEHNgrip conductor holder, loose conductor leading 8 mm 20 StSt (V2A) 675 mm 590 mm C D MODEL Distance holder for concrete bases (Part No ) with MMV clamp, fixed conductor leading, e.g. for crossovers 6-10 mm StSt (V2A) 675 mm 590 mm Distance rods with other lengths available on request. D 34

9 A DEHNiso Distance Holder II Variable range of holders for conductors and air termination rods for keeping the separation distance. Distance rod made of glass fibre reinforced plastic (GFP) Ø16 mm, UV-stabilised, light grey colour. A B C B CH CH CH Length Isolating Pipe clamping Socket Fixing element PU Part Rd height material (l1) distance range Ø material material pc(s) No. A MODEL Distance holder with pipe clamp 1 to 2 16 mm 20 ZDC-St/tZn 530 mm 445 mm 1 to mm ZDC StSt (V2A) mm 20 ZDC-St/tZn 690 mm 605 mm 1 to mm ZDC StSt (V2A) mm 20 ZDC-St/tZn 1030 mm 945 mm 1 to mm ZDC StSt (V2A) B MODEL Distance holder with pipe clamp 2 to 3 16 mm 20 ZDC-St/tZn 530 mm 445 mm 2 to mm ZDC StSt (V2A) mm 20 ZDC-St/tZn 690 mm 605 mm 2 to mm ZDC StSt (V2A) mm 20 ZDC-St/tZn 1030 mm 945 mm 2 to mm ZDC StSt (V2A) C MODEL Distance holder with pipe clamp 16 mm 20 ZDC-St/tZn 530 mm 445 mm mm ZDC StSt (V2A) mm 20 ZDC-St/tZn 690 mm 605 mm mm ZDC StSt (V2A) mm 20 ZDC-St/tZn 1030 mm 945 mm mm ZDC StSt (V2A) C 35

10 DEHNiso Distance Holder Single Parts Distance Rod For cutting variable lengths Diameter PU Part Material Colour Ø Length pc(s) No. GFP 1 16 mm 3000 mm Fixing Socket Connector For variable fixing of conductor and rod holders at the distance rod (Ø16 mm), with female M8 thread Socket conn. Female Diameter Screw Screw PU Part material thread Ø type material pc(s) No. ZDC M8 23 mm di M8x12 mm StSt (V2A) Fixing Plate Base plate for fixing the distance holder or distance rod (Ø16 mm), e.g. at parts of the construction Base plate Socket conn. Fixing Dimension Screw Screw PU Part material material hole Ø (l x w x t) type material pc(s) No. StSt (V2A) ZDC 8x5.1 / 4x7 / 2x11 mm 170x40x3 mm di M8x12 mm StSt (V2A) Conductor Holder For fixing conductors at the fixing socket connector with M8 screw CH CH CH Conductor Screw Screw PU Part material Rd height leading type material pc(s) No. ZDC-St/tZn 7-10 mm 20 mm fixed g M8x30 mm StSt (V2A) Rod Holder For fixing air termination rods at the fixing socket connector with M8 screw CH CH CH Conductor Screw Screw PU Part material Rd height leading type material pc(s) No. ZDC-St/tZn 16 mm 20 mm fixed g M8x30 mm StSt (V2A) Distance Holder with Conductor Holder For fixing conductors on different base parts, fixed conductor leading CH CH CH Isolating Socket conn. PU Part Rd height material Length distance material pc(s) No mm 20 mm ZDC-St/tZn 515 mm 435 mm Al mm 20 mm ZDC-St/tZn 675 mm 595 mm Al mm 20 mm ZDC-St/tZn 1015 mm 935 mm Al Distance Holder with Rod Holder For fixing air termination rods on different base parts, fixed conductor leading CH CH CH Isolating Socket conn. PU Part Rd height material Length distance material pc(s) No. 16 mm 20 mm ZDC-St/tZn 515 mm 435 mm Al mm 20 mm ZDC-St/tZn 675 mm 595 mm Al mm 20 mm ZDC-St/tZn 1015 mm 935 mm Al

11 DEHNiso Distance Holder Single Parts Clamping Bolt Threaded (M10), nut, toothed lock washer and screw for support of the distance rod Bolt Clamping Screw Screw/Nut PU Part material range Rd type material pc(s) No. Al 16 mm di M8x12 mm StSt (V2A) Angled Fixing Plate With clamping bolt for distance rod (Ø16 mm) Fixing Dimension PU Part Material Angle hole Ø (l x w x h) pc(s) No. StSt (V2A) 90 4x5.1 / 2x6.5 / 2x11 mm 110x60x30 mm Angled Fixing Plate For DEHNiso and DEHNiso Combi, hole Ø11 mm Fixing Dimension PU Part Material Angle hole Ø (l x w x h) pc(s) No. StSt (V2A) 90 4x5.1 / 2x6.5 / 2x11 mm 110x60x30 mm Angled Fixing Plate For DEHNiso, hole Ø11 mm Fixing Dimension PU Part Material Angle hole Ø (l x w x h) pc(s) No. StSt (V2A) 45 4x5.1 / 2x6.5 / 2x11 mm 104x54x30 mm Y-shape Angled Fixing Plate With clamping bolt for distance rod (Ø16 mm) Fixing Dimension PU Part Material Angle hole Ø (l x w x h) pc(s) No. StSt (V2A) 90 8x5.1 / 4x6.5 / 4x11 mm 132x155x30 mm Pipe Clamps With fixing socket connector for distance rod (Ø16 mm), for pipes up to 2 Clamp Clamping range Socket conn. Screw Screw/Nut PU Part material Ø pipe material type material pc(s) No. StSt (V2A) mm ZDC e M8x50 / di M8x12 mm StSt (V2A)

12 DEHNiso Distance Holder Single Parts Pipe Clamps With fixing socket connector for distance rod (Ø16 mm), for pipes up to 3 Clamp Clamping range Socket conn. Screw Screw/Nut PU Part material Ø pipe material type material pc(s) No. StSt (V2A) mm ZDC e M8x70 / di M8x12 mm StSt (V2A) Fixing Equipment for Railings For square pipes with socket for distance rod Clamping range Screw PU Part Material of square profile Screw material pc(s) No. ZDC / StSt (V2A) 20x20 to 50x50 mm e M8x70 / di M8x12 mm StSt (V2A) Clip for fixing the Distance Holder at Pipes Fixing with tensioning straps up to 30 mm (e.g. downpipe clamp, Part No , or tensioning strap with grip holder, Part No ), with clamping bolt Clip Bolt Slot width PU Part material material (l x w) pc(s) No. StSt (V2A) Al 32x6 mm Attachment with Fixing Socket Connector For fixing distance holders at pipes, e.g. with tensioning strap, Part No Slot width Clamping Socket conn. PU Part Material (l x w) range Rd material pc(s) No. StSt (V2A) 26x6 mm 16 mm ZDC Pipe Clamp for Attachment and Clip For fixing (tensioning) the clip (Part No ) or the attachment with fixing socket connector (Part No ) at different pipes Head/Strap Clamping Strap Screw Screw PU Part material range Ø (l x w x t) type material pc(s) No. StSt (V2A) 90 to 300 mm 1100x25x0.3 mm di M8x20 mm StSt (V2A)

13 DEHNiso Distance Holder Single Parts Pipe Clamp for Attachment and Clip Separate grip holder, for combination with continuous tensioning strap (Part No ) for greater pipe diameters, e.g. for attachment with fixing socket connector (Part No ) Head/Strap Strap Screw Screw PU Part material (l x w x t) type material pc(s) No. StSt (V2A) for 25x0.3 mm di M8x20 mm StSt (V2A) Earthing Pipe Clamps Continuous tensioning strap (100 m long) Strap dimension PU Part Material (l x w x t) pc(s) No. StSt (V2A)... x25x0.3 mm Adapter for Angled Support For air termination rods (Ø16 mm), with 2 clamping bolts for distance rod (Ø16 mm) Clamping Screw Screw/Nut PU Part Material range Rd type material pc(s) No. StSt (V2A) 16/16 mm dj M6x12 / di M8x12 mm StSt (V2A) Adapter for Angled Support For DEHNiso Combi insulating pipes (Ø50 mm), with 2 clamping bolts for distance rod (Ø16 mm) Clamping Screw Screw/Nut PU Part Material range Rd type material pc(s) No. StSt (V2A) 50/16 mm di M8x12 mm StSt (V2A) Adapter for Support of DEHNiso Combi pipe (Ø50 mm) and distance rod with cleat (Ø16 mm) Clamping Screw Screw/Nut PU Part Material range Rd type material pc(s) No. StSt (V2A) 50/16 mm di M8x12 / dj M6x12 mm StSt (V2A) Air Termination Rod Air termination rod for distance rod (Ø16 mm) e.g. for installation with concrete base Rod Rod Socket conn. PU Part material (l x Ø) material pc(s) No. StSt (V2A) 500x8 mm ZDC

14 DEHNiso Distance Holder Single Parts Fixing Adapter For saddle clamps and terminals, angled Fixing Socket conn. PU Part rod Rod Ø Angle material pc(s) No. StSt (V2A) 8 mm 90 ZDC Fixing Adapter For saddle clamps and terminals, angled Fixing Socket conn. PU Part rod Rod Ø Angle material pc(s) No. StSt (V2A) 8 mm 130 ZDC Fixing Adapter For saddle clamps and terminals, straight Fixing Socket conn. PU Part rod Rod Ø Angle material pc(s) No. StSt (V2A) 8 mm 0 ZDC MV Terminal Especially for fixing air termination rods at the distance rod without fixing socket connector CH Conductor Screw Screw PU Part Material Rd leading type material pc(s) No. StSt (V2A) 16/16 mm fixed e M10x50 mm StSt (V2A)

15 DEHNiso Combi Isolated air-termination system for roof superstructures Equipment for fixing insulating pipes at railings Angled fixing plate for insulating pipes Isolated air-termination system for septic tanks 41

16 DEHNiso Combi Sets A Components for separate (isolated) air termination systems for protection of major roof-mounted elements, e.g. air conditioning systems, recooling plants, etc. For determining the separation distance (length of the distance rod), material factor km = 0.7 is used. A 1 m distance rod corresponds to an equivalent air clearance of 0.7 m. B C Total Quantity of Quantity of Length of Insulating pipe PU Part length distance holders angled fixing plates insulating pipe material pc(s) No. A MODEL 1-part unit, total length 4200 mm, consisting of 1x air termination tip Al, L = 1000 mm (Part No ) 1x insulating pipe GFP/Al, L = 3200 mm (Part No ) 2x angled fixing plate for wall mounting StSt (V2A) (Part No ) 1x distance holder GFP/Al, L = 1030 mm (Part No ) 4200 mm mm GFP/Al B MODEL 1-part unit, total length 5700 mm, consisting of 1x air termination tip Al, L = 1000 mm (Part No ) 1x insulating pipe GFP/Al, L = 4700 mm (Part No ) 3x angled fixing plate for wall mounting StSt (V2A) (Part No ) 2x distance holder GFP/Al, L = 1030 mm (Part No ) 5700 mm mm GFP/Al C MODEL 2-part unit, total length 7200 mm (transport length 3200 mm) consisting of 1x air termination tip Al, L = 1000 mm (Part No ) 1x insulating pipe GFP/Al, L = 6200 mm (Part No ) 3x angled fixing plate for wall mounting StSt (V2A) (Part No ) 3x distance holder GFP/Al, L = 1030 mm (Part No ) 7200 mm mm GFP/Al For further details, please see also installation instructions No

17 DEHNiso Combi I Components for separate (isolated) air terminations systems for protection of major roof superstructures, e.g. air conditioning systems, recooling systems, etc Air-termination Tip with MV Terminal For screwing into the top of the insulating pipe and for fixing the air termination conductors (wires or stranded conductors) with M10 threads Tip Material of Tip Clamping PU Part material MV terminal (l x Ø) range Rd Thread pc(s) No. Al StSt (V2A) 1000x10 mm 8-10 mm M MV Clamp for Spanning For screwing into the top of the insulating pipe with M10 screws, in order to support spanning of conductors Clamping Screw Screw PU Part Material range Rd type material pc(s) No. StSt (V2A) 8-10 mm M10x30 StSt (V2A) tested Insulating Pipes GFP/Al For isolated construction of air-termination systems and fixing of the HVI conductor. Single-part unit Insulating pipe Length of Transport Isolating PU Part material insulating pipe Outer Ø length clearance pc(s) No. GFP / Al 3200 mm 50 mm 3200 mm 1535 mm GFP / Al 4700 mm 50 mm 4700 mm 1535 mm part unit Insulating pipe Length of Transport Isolating PU Part material insulating pipe Outer Ø length clearance pc(s) No. GFP / Al 6200 mm 50 mm 3200/3000 mm 1535 mm Angled Fixing Plate For fixing the insulating pipes at the construction to be protected or at walls Plate Fixing Clamping range of Wall / Angle Screw PU Part material holes Ø Length insulating pipe distance material pc(s) No. StSt (V2A) 8x5.1 / 4x11 mm 320 mm 50 mm 80 mm StSt (V2A) Tested according to DIN EN (VDE 0185 Part 201): tested 43

18 DEHNiso-Combi I Single Parts Angled Fixing Plate For fixing the insulating pipes at the construction to be protected or at walls Plate Fixing Clamping range of Wall / Angle Screw PU Part material holes Ø Length insulating pipe distance material pc(s) No. StSt (V2A) 8x5.2 / 4x11 mm 152 mm 50 mm 80 mm StSt (V2A) Angled Fixing Plate For fixing the insulating pipes at the construction to be protected or at walls Plate Fixing Clamping range of Wall / Angle Screw PU Part material holes Ø Length insulating pipe distance material pc(s) No. StSt (V2A) 8x5.1 / 4x7 / 2x11 mm 170 mm 50 mm 46 mm StSt (V2A) N Fixing Clamp with Tensioning Strap For fixing the insulating pipes at construction elements, e.g. antenna poles Clip Clamping Material of Screw PU Part material range tensioning strap material pc(s) No. StSt (V2A) mm StSt (V2A) StSt (V2A) Fixing Clamp with Tensioning Strap For fixing the insulating pipes at construction elements, e.g. antenna masts With additional spacer to adjust supports of sector antennas at poles Clip Clamping Material of Screw PU Part material range tensioning strap material Spacer pc(s) No. StSt (V2A) mm StSt (V2A) StSt (V2A) 30 mm (Al) Fixing Clamp with Tensioning Strap For fixing the insulating pipes at construction elements, e.g. antenna masts With additional long spacer to adjust supports of sector antennas at poles Clip Clamping Material of Screw PU Part material range tensioning strap material Spacer pc(s) No. StSt (V2A) mm StSt (V2A) StSt (V2A) 95 mm (Al) N 44 N New Products

19 DEHNiso-Combi I Single Parts Fixing Equipment for Railings For fixing the insulating pipes at construction elements, e.g. railing pipes For pipes Clamping range Screw Clamping range of PU Part Material Ø pipe Screw material insulating pipe pc(s) No. StSt (V2A) 1 to mm em8x40/e M8x50 mm StSt (V2A) 40 / 50 mm For pipes Clamping range Screw Clamping range of PU Part Material Ø pipe Screw material insulating pipe pc(s) No. StSt (V2A) 2 to mm em8x40/em8x70 mm StSt (V2A) 50 mm For square pipes Clamping range Screw Clamping range PU Part Material of square profile Screw material of insulating pipe pc(s) No. StSt (V2A) 20x20 to 50x50 mm em8x40/em8x70 mm StSt (V2A) 50 mm For square pipes with socket for distance rod Clamping range Screw PU Part Material of square profile Screw material pc(s) No. ZDC / StSt (V2A) 20x20 to 50x50 mm e M8x70 / di M8x12 mm StSt (V2A) Clamp for insulating pipe with distance rod (Ø16 mm, length 200 mm), for fixing the insulating rods, e.g. at projections Screw Clamping range PU Part Material Screw material of insulating pipe pc(s) No. StSt (V2A) di M8x16 mm StSt (V2A) 50 mm

20 DEHNiso-Combi I Single Parts Pipe Clamps With fixing socket connector for distance rod (Ø16 mm), for pipes up to 2 Clamp Clamping range Socket conn. Screw Screw/Nut PU Part material Ø pipe material type material pc(s) No. StSt (V2A) mm ZDC em8x50 / di M8x12 mm StSt (V2A) Pipe Clamps With fixing socket connector for distance rod (Ø16 mm), for pipes up to 3 Clamp Clamping range Socket conn. Screw Screw/Nut PU Part material Ø pipe material type material pc(s) No. StSt (V2A) mm ZDC em8x70 / di M8x12 mm StSt (V2A) Distance Holder for Insulating Pipes For isolated fixing of the conductor at the insulating pipe, clamping range: 50 mm Holder Fixing element CH CH CH Isolating Clamping range Part material material material Rd height Length distance of insulating pipe No. GFP StSt (V2A) ZDC-St/tZn 7-10 mm mm 445 mm 50 mm GFP StSt (V2A) ZDC-St/tZn 7-10 mm mm 605 mm 50 mm GFP StSt (V2A) ZDC-St/tZn 7-10 mm mm 945 mm 50 mm Tripod Support for DEHNiso Combi For free installation of the insulating pipes (Part No or ), without additional fixing at construction elements. Allows for adjusting to roof inclinations up to 10. For insulating pipes, length 3200 mm Ø50 mm Support Quantity of Space requirements PU Part material bases Radius of support pc(s) No. St/tZn 6/9 560 mm 1180x1320 mm

21 For preventing dangerous flashovers among parts of external lightning protection systems and internal conductive parts (electrical installation, conduits, etc.), keeping the separation distance s is an important requirement to be considered when designing and realising a lightning protection system. Keeping the separation distance s is often a problem for both new and existing installations. With the innovative solution of HVI Conductor of the DEHNconductor System range, this requirement can be fulfilled. Function of HVI Conductor: Without additional protective measures, high impulse voltages cause flashovers on surfaces of insulating materials. This effect is known as a creeping flashover. If the so-called creepage discharge inception voltage is exceeded, a surface sparkover is initiated that can range over a distance of some metres without problem. DEHNconductor System For avoiding creepage discharges, the new HVI Conductor is supplied with a special external coating that allows to direct high lightning impulse voltages to a reference potential. For this purpose, the special external coating is connected with the equipotential bonding of the building (free of partial lightning currents) in the area of the sealing unit. This can be performed at e.g. metal, earthed roofmounted elements situated in the protection area of the lightning protection system, at earthed parts of the building construction which is free of lightning currents, or at the protective conductor of the low voltage system. No metal parts may be situated within separation distance s from the sensitive sealing unit area. Isolated air-termination system with isolated down conductor system for a cell site installation Insulating pipe with HVI conductor at a cell site mast 47

22 DEHNconductor System air-termination rod Al L = 1000 mm Part No α α protective angle acc. to IEC Part 3, Table 3 sealing unit area head piece cable tie terminal plate Part No connection to equipotential bonding of the building EB connecting element e.g. fixing clamp; StSt 90 mm to 300 mm, Part No insulating pipe; GFP/AI, L = 3200 mm Part No Fixing clamp with tensioning strap for insulating pipes antenna HVI Conductor I EB terminal Part No equipotential bonding e.g. to the earthed radio base station (RBS) earth connection element earth-termination system Schematic illustration HVI Conductor Parallel leading Isolated air-termination system at a roof superstructure with HVI Conductor HVI Conductor I along brickwork 48

23 A DEHNconductor System HVI Conductor High-voltage resistant insulating down conductor HVI conductor for keeping the separation distance from conductive parts according to DIN VDE V Equivalent separation distance s = 0.75 m (in air). Patent No. DE Minimum order length: 4 m. Please confirm the length required when placing your order. 3 different types of HVI Conductor are available: HVI Conductor I can be used for connecting the airtermination system of the external lightning protection system directly to the earthing system of the building. B HVI Conductor II is used for connecting e.g. several parts of the installation to be protected, not individually but together, to the earthing system of the building via an isolated ring conductor. HVI Conductor III with a fixed sealing unit and a sealing end to be established on site, is usually used where the total conductor length cannot be defined exactly when designing the installation. HVI Conductor III can be used just like HVI Conductor II. HVI Conductors I and III may be shortened but not extended. A B C C Conductor Insulation Coating Colour of Core Outer Ø PU Part material material material conductor cross section of conductor pc(s) No. A MODEL HVI Conductor I with one head piece and one connection element for equipotential bonding Cu PE PVC 1 19 mm 20 mm Cu PE PVC 1 19 mm 23 mm B MODEL HVI Conductor II with two head pieces and two connection elements for equipotential bonding Cu PE PVC 1 19 mm 20 mm Cu PE PVC 1 19 mm 23 mm C MODEL HVI Conductor III with one head piece, one connection element and two connection elements for equipotential bonding. One connection element for equipotential bonding and one connection element are loosely included in delivery Cu PE PVC 1 19 mm 20 mm Cu PE PVC 1 19 mm 23 mm For further information about the DEHNconductor System please see also installation instructions No For being a customised product (with specified conductor length), please understand that the conductors cannot be returned. 49

24 HVI Conductor in Insulating Pipe Visually adapted installation of HVI conductor inside of an insulating pipe. A D A B C D E F B E Insulating pipe Length of Outer Ø of Colour of PU Part material insulating pipe conductor conductor pc(s) No. A MODEL HVI Conductor I Installed into the insulating pipe, with special internal sealing unit and air termination tip GFP/Al 3200 mm 20 mm GFP/Al 3200 mm 23 mm B MODEL HVI Conductor II Installed into the insulating pipe, with special internal sealing unit and air termination tip GFP/Al 3200 mm 20 mm GFP/Al 3200 mm 23 mm C MODEL HVI Conductor III Installed into the insulating pipe, with special internal sealing unit and air termination tip GFP/Al 3200 mm 20 mm GFP/Al 3200 mm 23 mm C F D MODEL HVI Conductor I Installed into the insulating pipe, with special internal sealing unit and air-termination tip D 16/10 mm, length 2500 mm GFP/Al 3200 mm 20 mm E MODEL HVI Conductor II Installed into the insulating pipe, with special internal sealing unit and air-termination rod D 16/10 mm, length 2500 mm GFP/Al 3200 mm 20 mm F MODEL HVI Conductor III Installed into the insulating pipe, with special internal sealing unit and air-termination rod D 16/10 mm, length 2500 mm GFP/Al 3200 mm 20 mm N N N Minimum order length 6 m, please confirm the conductor length required when placing your order. Note: For being customised products (length according to specification), please understand that the conductors cannot be returned. 50 N New Products

25 DEHNconductor System Single Parts Air Termination Tip with Lock Nut For screwing into the top of the insulating pipe and for connecting the HVI conductor Diameter Nut PU Part Material Ø Length Thread material pc(s) No. Al 10 mm 1000 mm M10 StSt (V2A) Insulating Pipes GFP/Al For isolated construction of air-termination systems and fixing the HVI conductor. Single-part unit Insulating pipe Length of Transport Isolating PU Part material insulating pipe Outer Ø length clearance pc(s) No. GFP / Al 3200 mm 50 mm 3200 mm 1535 mm GFP / Al 4700 mm 50 mm 4700 mm 1535 mm part unit Insulating pipe Length of Transport Isolating PU Part material insulating pipe Outer Ø length clearance pc(s) No. GFP / Al 6200 mm 50 mm 3200/3000 mm 1535 mm Insulating Pipes GFP/Al For isolated construction of air-termination systems and fixing the HVI conductor. Single-part unit with air-termination tips on the side, D8 mm, length 500 mm, StSt (V2A) N Insulating pipe Length of Transport Isolating PU Part material insulating pipe Outer Ø length clearance pc(s) No. GFP / Al 3235 mm 50 mm 3235 mm 1535 mm Insulating Pipes GFP/Al For isolated construction of air-termination systems and fixing of the HVI conductor. Single-part unit combined with air-temination rod D16/10 mm, length 2500 mm N Insulating pipe Length of Transport Isolating PU Part material insulating pipe Outer Ø length clearance pc(s) No. GFP / Al 3200 mm 50 mm 3200 mm 1535 mm New Products N 51

26 DEHNconductor System Single Parts Fixing Clamp with Tensioning Strap For fixing the insulating pipes at construction elements, e.g. antenna poles Clip Clamping Material of Screw PU Part material range tensioning strap material pc(s) No. StSt (V2A) mm StSt (V2A) StSt (V2A) Fixing Clamp with Tensioning Strap With additional spacer to adjust supports of sector antennas at poles Clip Clamping Material of Screw PU Part material range tensioning strap material Spacer pc(s) No. StSt (V2A) mm StSt (V2A) StSt (V2A) 30 mm (Al) Fixing Clamp with Tensioning Strap With additional long spacer to adjust supports of sector antennas at poles Clip Clamping Material of Screw PU Part material range tensioning strap material Spacer pc(s) No. StSt (V2A) mm StSt (V2A) StSt (V2A) 95 mm (Al) N Angled Fixing Plate For fixing the insulating pipes at the construction to be protected or at walls Plate Fixing Clamping range of Wall / Angle Screw PU Part material holes Ø Length insulating pipe distance material pc(s) No. StSt (V2A) 8x5.1 / 4x11 mm 320 mm 50 mm 80 mm StSt (V2A) Connecting Plate For connecting the HVI conductor to the air termination tip with two KS connectors including spring washer tested Plate KS connector Clamping Dimension PU Part material material range Rd Spring washer (l x w x t) pc(s) No. StSt (V2A) StSt (V2A) 6-10 mm 3 63x30x3 mm tested Tested according to DIN EN (VDE 0185 Part 201): N New Products

27 DEHNconductor System Single Parts Connecting Plate For connecting the HVI conductor to the air termination tip with two KS connectors including spring washer Plate KS connector Clamping Dimension PU Part material material range Rd Spring washer (l x w x t) pc(s) No. StSt (V2A) StSt (V2A) 16 / 6-10 mm 3 63x30x3 mm tested KS Connector Single-part unit, with M10 screw and nut KS Clamp Clamping Spring Nut PU Part screw material range Rd washer material pc(s) No. StSt (V2A) StSt (V2A) 6-10 mm 3 StSt (V2A) tested EB Terminal For connecting the special coating of the HVI conductors to the equipotential bonding Clamp Clamping Cross-sectional Cleat Screw PU Part material range Ø area material Screw material pc(s) No. St/tZn 20 mm 4-95 mm 2 StSt (V2A) dm M6x16 mm StSt (V2A) Holder for HVI Conductor For wall mounting and for mounting within sealing unit ranges CH CH Fixing Screw PU Part material Rd Thread hole type pc(s) No. PA 20 mm M8 6.5 mm r M6x16 mm PA 23 mm M8 6.5 mm r M6x16 mm Holder for HVI Conductor StSt for wall mounting with twin screw cleat (outside of the sealing unit range) CH CH Fixing Screw PU Part material Rd hole type pc(s) No. StSt (V2A) 20 mm 6.5x16 mm dm M6x14 mm Holder for HVI Conductor ZDC-StSt for wall mounting with twin-screw cleat (outside of the sealing unit range) CH CH Fixing Screw PU Part material Rd Thread hole type pc(s) No. ZDC / StSt (V2A) 20 mm M8 6.5 mm dm M6x16 mm Tested according to DIN EN (VDE 0185 Part 201): tested 53

28 DEHNconductor System Single Parts Holder for HVI Conductor With frame dowel for heat insulation interconnected systems CH CH Fixing Screw PU Part material Rd hole type pc(s) No. PA 20 mm 8.5 mm b l (TX40) 7x180 mm PA 23 mm 8.5 mm b l (TX40) 7x180 mm Holder for HVI Conductor For solid brickworks for fixing the conductor holder (Part No or ) for sealing unit ranges Note: For installation at honeycomb bricks, no driving when drilling CH Fixing PU Part material Thread hole pc(s) No. GFP M8x6 mm 8 mm Conductor Holder with Tensioning Strap With PA conductor holder CH CH Clamping range Screw PU Part material Rd Ø pipe Screw material pc(s) No. PA 20 mm mm r M6x16 mm StSt (V2A) PA 23 mm mm r M6x16 mm StSt (V2A) Conductor Holder with Tensioning Strap With metal conductor holder CH CH Clamping range Screw PU Part material Rd Ø pipe Screw material pc(s) No. ZDC / StSt (V2A) 20 mm mm dm M6x16 mm StSt (V2A) Adapter for installing HVI Conductors on flat Roofs Rod adapter for fixing conductor holders (e.g. Part No or ) in wedged concrete bases (Part No ) Diameter PU Part Material Thread Length Ø pc(s) No. Al M8 150 mm 16 mm Roof Conductor Holder, for flat Roofs With single conductor holder Type FB, in accordance with DIN Conductor CH CH CH Dimension PU Part leading material colour Rd Stone Weight (l x w x h) pc(s) No. loose plastic 1 8 mm concrete (B45) 1 kg 100x100x70 mm

29 DEHNconductor System Single Parts Adapter for installing HVI Conductors on flat Roofs Adapter for installation on flat roofs with roof conductor holder Type FB (Part No ) Snap-on unit CH PU Part Material Colour Rd pc(s) No. plastic 1 20 mm Adapter for installing HVI Conductors on flat Roofs Adapter for installation on flat roofs with roof conductor holder Type FB (Part No ) N CH PU Part Material Colour Rd pc(s) No. plastic 1 23 mm Adapter for Roof Conductor Holders Adapter for fixing plastic conductor holders with M8 thread on different roof conductor holder bases (standard conductor holder is removed) N Female PU Part Material Thread thread Length Colour pc(s) No. plastic M8 M6 30 mm light beige Roof Conductor Holder with Brace for HVI Conductor For installing the HVI conductor on roof surfaces of gable roofs With straight brace RCH CH Conductor CH Brace Brace PU Part material material leading Rd height length pc(s) No. St/tZn PA fixed 20 mm 55 mm 260 mm St/tZn PA fixed 23 mm 55 mm 260 mm Roof Conductor Holder with Brace for HVI Conductor For installing the HVI conductor on roof surfaces of gable roofs With angled brace RCH CH Conductor CH Brace Brace PU Part material material leading Rd height length pc(s) No. St/tZn PA fixed 20 mm 55 mm 115 mm St/tZn PA fixed 23 mm 55 mm 115 mm Roof Conductor Holder with Brace for HVI Conductor For installing the HVI conductor on roof surfaces of gable roofs With cranked brace RCH CH Conductor CH Brace Brace PU Part material material leading Rd height length pc(s) No. St/tZn PA fixed 20 mm 55 mm 260 mm St/tZn PA fixed 23 mm 55 mm 260 mm New Products N 55

30 DEHNconductor System Single Parts Distance Holder for HVI Conductor With polyamide conductor holder (Part No or ) for sealing unit ranges Distance holder CH Conductor Screw PU Part material Length Support Rd leading Grooved pin pc(s) No. GFP 1000 mm 20 mm fixed r M6x16 mm GFP 1000 mm 23 mm fixed r M6x16 mm Distance Holder for HVI Conductor For conductor holders (Part No or ) at distance rods (Ø16 mm) for cutting to length, made of GFP (Part No ) for sealing unit ranges CH / Adapter Screw PU Part material Length Thread Grooved pin pc(s) No. plastic 30 mm M8 straight grooved pin 5 mm mm Concrete Bases Wedged, stackable, for air-termination rods Ø16 mm, chamfered or diminished, or DEHNiso distance holder Ø16 mm Diameter Wedge/Adapter PU Part Weight Ø Material material pc(s) No. 17 kg 337 mm concrete (B55) StSt (V2A) Flat Washer For concrete bases (Part Nos , ) Diameter Diameter PU Part Ø Ø (d2) Material Colour pc(s) No. 370 mm 360 mm EVA Clip For fixing HVI conductor at e.g. premounted C rails Clamp with cable duct element CH CH Screw Screw PU Part material Rd type material pc(s) No. St/tZn-S 20/23 mm dj M6x25 St/tZn

31 DEHNconductor System Single Parts C Rail Separate, for cutting to length C Rail PU Part material Length pc(s) No. St/tZn 2000 mm Tripod Support for HVI Conductor in Insulating Pipe Special type for HVI Conductor integrated into insulating pipe (length 3200 mm). In order to keep the bending radius of the HVI Conductor at the bottom of the tripod support, 2 concrete bases are installed below and one above the limb. The stackable concrete base (Part No ) and the flat washer (Part No ) have to be ordered separately. N Support Quantity of Space requirements PU Part material bases Radius of support pc(s) No. St/tZn mm 1180x1320 mm New Products N 57

32 Conductor Holder for HVI Conductor in explosive Zones Note: Observing the installation instructions No is absolutely mandatory. A A B C Base part Cleat CH Brace Fixing Dimension PU Part material material Rd material holes Ø Screw (l x w x t) pc(s) No. A MODEL With distance sleeve, distance: 50 mm, for fixing on metal construction parts (façades) in Ex zones 2 and 22 ZDC StSt (V2A) 20 mm StSt (V2A) 4x5.1 / 2x7 mm dm M6x16 mm B B MODEL With distance rod, distance 200 mm, for fixing with e.g. fixing plate for DEHNiso distance holder (Part No , to be ordered separately) at metal construction parts (façades) in Ex zones 2 and 22 ZDC StSt (V2A) 20 mm Al dm M6x16 mm C MODEL Connecting brace for installing HVI conductors with conductor holders with distance sleeve (Part No ) on a non-conductive structure, e.g. stone, wood StSt (V2A) 4x5.1 / 2x7 mm 478x30x3 mm C 58

33 Conductor Holder for HVI Conductor in explosive Zones Fixing Plate Base plate for fixing the distance holder or distance rod (Ø16 mm), e.g. at parts of the construction Base plate Socket conn. Fixing Dimension Screw Screw PU Part material material hole Ø (l x w x t) type material pc(s) No. StSt (V2A) ZDC 8x5.1 / 4x7 / 2x11 mm 170x40x3 mm di M8x12 mm StSt (V2A) Attachment with Fixing Socket Connector For fixing distance holders at pipes, e.g. with tensioning strap, Part No Slot width Clamping Socket conn. PU Part Material (l x w) range Rd material pc(s) No. StSt (V2A) 26x6 mm 16 mm ZDC Pipe Clamp for Attachment and Clip For fixing (tensioning) the clip (Part No ) or the attachment with fixing socket connector (Part No ) at different pipes Head/Strap Clamping Strap Screw Screw PU Part material range Ø (l x w x t) type material pc(s) No. StSt (V2A) 90 to 300 mm 1100x25x0.3 mm di M8x20 mm StSt (V2A)

34 Air-termination Masts with HVI Conductor A Especially for use at e.g. fermenters or gas holders of biogas plants. Transport length 6000 mm The maximum free length of the complete air-termination system must not exceed 8.5 m. It has to be fixed with 3 variable supports (Part No ) The separable air-termination mast consists of air-termination rod Al Ø16/10 mm, length 2500 mm insulating pipe GFP/Al Ø50/60 length 2050 mm (inserted by 200 mm into mast pipe)) mast pipe St/tZn Ø60, length 6000 mm with locking screws M10, out of StSt (V2A) HVI conductor, installed inside and outside B A B Length of Length of Length of Length of Transport PU Part HVI Conductor (l1) air-termination rod insulating pipe (l1) mast pipe length pc(s) No. A MODEL With HVI Conductor I for a total height of maximum 12.5 m of the air-termination system With 1x HVI Conductor I, conductor length 10 m, integrated mm 2500 mm 2050 mm 6000 mm 6000 mm N B MODEL With two HVI Conductors I for a total height of maximum 16.0 m of the air-termination system With 2x HVI Conductor I, conductor length 10 m, internal and external installation. The further required conductor lengths of the HVI Conductors have to be ordered separately (double). Maximum total length of the HVI Conductors 13.5 m mm 2500 mm 2050 mm 6000 mm 6000 mm N For further details please see also installation instructions No Variable Supports for Air-termination Masts supports to be installed per air-termination mast Clip Clamping Clamping range of Fixing Screw Screw PU Part material range air-termination mast holes Ø Profile type material pc(s) No. St/tZn mm 60 mm 12x25 mm 40x40x4 / 30x30x3 di M10x30 StSt (V2A) N 60 N New Products

35 Fig. 3: Design of a CUI conductor Fig. 4: Rain test Fig. 5: Detail picture of Fig. 4 DIN EN (VDE ) points out that in special cases, shock voltages outside of the building and close to the down-conductor systems, can become highly dangerous, although the lightning protection system was designed according to the latest state of standardisation. Special cases are e.g. entrance areas, sheltering roofs of buildings with high frequency of visitors, like theatres, cinemas, malls, where bare/non-insulated downconductor systems and lightning protection earthing electrodes are installed close to them. For buildings especially exposed (to lightning), and which are freely accessible to the public, e.g. shelters, also measures against impermissibly high shock voltages can become necessary. Touch voltages are voltages affecting a human being between his standing surface on the ground (distance approx. 1 m from the down conductor system) when contacting the down conductor. The current flows via the hand to the body and to the feet (see Fig. 1). The hazardous area for persons being outside of a building is defined to earth level within a height of approx. 3 m and a distance of 3 m around the down conductor. ϕ foundation earthing electrode = earth surface potential According to DIN EN (VDE ) Subclause E , the area to be protected against touch voltages corresponds to the height of the finger tips of a person with outreached hand and additionally to separation distance s (see Fig. 2). Additionally, the step voltage in the surroundings of the building/down conductor has also to be taken into account. Ut s DEHNconductor System CUI Conductor Effective measures for protection against injuries to persons due to touch voltages are defined by standardisation as follows: The bare down conductor is coated with an insulating material with an impulse withstand voltage of 100 kv at 1.2/50 μs, e.g. at least 3 mm cross-linked polyethylene; Lockings and/or warning signs to reduce the probability of touching the down conductors. The CUI conductor has an inner conductor out of copper with a diameter of 8 mm and a high-voltageresistant insulation (see Fig. 3). Requirements on these conductors are the surge withstand capability of 100 kv (1.2/50 μs) and the avoiding of a creepage sparkover even in rain. The surge withstand capability of 100 kv (1.2/50 μs) is achieved by an insulation out of special cross-linked polyethylene (XLPE). Without additional measures, high impulse voltages cause sparkovers at insulating surfaces. This effect is known as a creeping discharge. If the creeping discharge inception voltage is exceeded, a surface discharge is initiated, which can cover a distance of several metres to earthed parts without problem. In order to avoid the upcoming of creeping discharges even in rain, the CUI conductor is supplied with an additional shield to form a dry area. This shield on the conductor and the drops after the rain test are shown in Fig. 4. The development of the CUI conductor was based on the rain test according to DIN IEC 60 Part 1 (VDE 0432 Part 1) Subclause 9. During this test, a defined volume of water is sprayed onto the conductor in an angle of approx. 45. This test is shown in Figs. 4 and 5. The CUI conductor is available in two standard lengths of 3.5 m and 5 m and is installed vertically at the wall with the corresponding conductor holders. The manufacturer has premounted a head piece and the shield. The conductor can be shortened on site but not be extended. For connecting to the down conductor, e.g. disconnecting or MV clamps can be used. When connecting the CUI conductor to the earth-termination system,e.g. cross units can be used, which have additionally to be supplied with anticorrosive measures m Fig. 1: Schematic diagram Touch voltage U t Fig. 2: Protected area for one person 61

36 DEHNconductor System CUI Conductor With the new CUI conductor, touch voltages at down conductors can be avoided. The hazardous area of touch and step voltages for living beings is defined on earth level within a height of approx. 3 m and a distance of 3 m around the down conductor. The CUI conductor has an inner conductor out of copper and a high-voltage-resistant insulation. Requirements on these conductors are surge withstand capability of 100 kv (1.2/50 μs) and the avoiding of a creepong sparkover even in rain Conductor Insulation Outer Ø Colour of Core Total PU Part material material of conductor conductor cross section length (l1) pc(s) No. Cu PU 20 mm 1 50 mm mm Cu PU 20 mm 1 50 mm mm For further information about the DEHNcondctor system please see also installation instructions No

37 Conductor Holder for CUI Conductor A For installing the CUI conductor at walls or façades. B A B C CH CH Fixing PU Part material Rd CH height hole Thread pc(s) No. A MODEL Height 19 mm PA 20 mm 19 mm 6.5 mm M C B MODEL Height 10 mm StSt (V2A) 20 mm 10 mm 6.5x16 mm C MODEL Twin screw cleat for direct wall mounting StSt (V2A) 20 mm 6.5 x 8 mm

38 Isolated Air-termination Systems for Omnidirectional Antennas When installing isolated air-termination systems for omnidirectional antennas, it has to be ensured that an isolated air-termination rod covers the antenna to be protected with a sufficient protective angle. Furthermore, a sufficient separation distance s has to be kept. Antennas with 360 emitting characteristics are used for different radio applications. These antennas are also known as omnidirectional antennas on the market. Typical applications for omnidirectional antennas in practice are e.g. private mobile radio (PMR) systems, emergency call networks and sometimes also GSM networks. However, they are only applied in GSM networks, if there is a low frequency of radio waves. For omnidirectional antennas it has to be considered that metal structures situated close to them have a negative influence on the emitting characteristics, i.e. they are attenuated by the structures. The more far away the metal structures are situated from the antenna, the less they interfere with the emitting characteristics. To evaluate how and how much influence close metal structures have on the emitting performance, products of DEHN + SÖHNE have been tested under these criteria together with the company Kathrein in Rosenheim, Germany. If the HVI Conductor of the DEHN Conductor System is used for isolated air-termination systems, a maximum separation distance of 0.75 m in air has to be maintained. For maximum wind velocities of 145 km/h, a mechanical distance of 1 m between the antenna and isolated airtermination system was defined under consideration of the mechanical deflection of the antenna and air-termination system when being stressed by wind loads. The result of a radio-specific evaluation is a distance corresponding to a quarter of the wave length. The following illustrations will show the calculation of the wave length and a table. Private mobile radio systems often work in a frequency range of 40 MHz. The presently existing emergency call networks (fire brigade, police, etc.) work typically in frequency ranges of 80 MHz and 160 MHz. The future digital emergency call networks for authorities, organisations and emergency call networks will work with a frequency of 400 MHz. Present GSM networks communicate with 900 MHz, 1800 MHz and UMTS networks with 2 GHz. The corresponding wave length can be taken from the above table. As can be read from the table, the quarterwave distance is more critical for applications with a lower transmission frequency, than e.g. GSM and UMTS networks. velocity of light wave length = frequency m c λ = s f 1 s velocity of light c = km/s = 3 x 10 8 m/s Calculation of the wave length Table 1 Frequency (Hz = s ) Wave length (m) x x x x x

39 Isolated Air-termination Systems for Omnidirectional Antennas Examinations have been performed for application of an air-termination system which is installed in parallel to the antenna with a diameter of 50 mm (metal mast) and the HVI conductor with a diameter of 20 mm (copper conductor with a diameter of 5 mm). The detailed test results can be requested from DEHN + SÖHNE. The technical implementation of the isolated air-termination system is shown in Fig. 1. It is based on an omnidirectional antenna with a length of approx mm and an insulating pipe with a 1000 mm long airtermination tip. Part Nos , or can be used for the design shown according to the used HVI conductor I, II or III (e.g. black). The lengths of the omnidirectional antennas can be up to approx mm. These lengths require customised types of the insulating pipe with an air-termination rod up to 2500 mm for covering the corresponding protective area. Fig. 2 shows a possible design and the required types. For connecting the HVI conductor to the airtermination rod, a special connecting element is required. This connecting plate for the HVI conductor consists of a terminal bolt (D = 16 mm) and a KS connector (6-10 mm). Fixing the construction with the insulating pipe at the anntenna mast in a distance requires special supports. The type of these distance holders is shown in Fig. 3. Minimum two distance holders per insulating pipe of the isolated air-termination system must be mounted. This can be obtained according to the diameter of the mast. The DEHN installation instructions No has to be observed for installing the isolated air-termination system. omnidirectional antenna length approx mm distance holder, Part No , Ø mm Part No , Ø mm Part No , Ø mm 1000 mm approx mm air-termination rod Al Ø10 mm L = 1000 mm GFP Ø50x4 mm L = 1500 mm e.g. HVI conductor I in insulating pipe, Part No L = 3200 mm Al Ø50x4 mm HVI conductor Fig. 1: Construction for omnidirectional antenna, length 1000 mm (example) omnidirectional antenna length approx mm distance holder, Part No , Ø mm Part No , Ø mm Part No , Ø mm 1000 mm approx mm Fig. 2: Construction for omnidirectional antenna, length 3000 mm (example) α α air-termination rod Al Ø10 mm L = 1000 mm air-termination rod Al Ø16 mm L = 1500 mm GFP Ø50x4 mm L = 1500 mm e.g. HVI conductor I in insulating pipe, Part No L = 3200 mm Al Ø50x4 mm HVI conductor For the entire topic of isolated air-termination systems for omnidirectional antennas and the above shown design, the wind load and the resulting statics have to be approved by the operator or owner of the installation. Further information about the own weight and surface exposed to the wind loads available on request. Our components and configurations of the structure are dimensioned according to DIN 4131 for wind load zones II with a wind velocity of 145 km/h mm Fig. 3: Distance holder in detail 65