Page 257 - Surge-Protection-E_0.pdf

Ex Pipe Clamps

Pipe Clamps for Ex Zones 1/21, 2/22
• For use in Ex zones 1 and 2 (gases, vapours, mists) as well as
Ex zones 21 and 22 (dusts)
• Tested according to explosion group IIB
• Time-saving installation – no need to deactivate systems /
areas for welding or drilling work

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EX BRS 27: Clamping range from Ø6-27 mm ( /4“)
EX BRS 90: Clamping range from Ø27 (3/4“) to 89 mm (3“)
EX BRS 300: Clamping range from Ø89 (3“) to 300 mm
EX BRS 500: Clamping range from Ø300 to 500 mm
Separate Pipe clamp for electrical contacting pipes in hazardous areas for implementing
clamping body: Clamping range from Ø27 ( /4“) to 500 mm lightning equipotential bonding according to IEC / EN 62305-3
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SIn the past, connections for equipotential bonding and lightning equipo- The Ex pipe clamp provides the following connection possibilities:
tential bonding in Ex zones were often welded or threaded bushing con- – Round conductors made of Cu, St/tZn, Al, StSt with Ø8/10 mm or
nections. Clamps may only be used if absence of ignition sparks in case flexible / stranded copper conductors, cross section 16-35 mm², with
of lightning currents is proven. DEHN has provided evidence of absence E-Cu crimping cable lug (DIN 46235)
of ignition sparks under lightning current load for the pipe clamps. The – Flat copper conductors, min. 20 x 2.5 mm, with bore Ø10.5 mm
clamp has been tested according to EN 50164-1 title English: Lightning
Protection Components (LPC) - Part 1: Requirements for connection com-
ponents in a potentially explosive atmosphere (clamps and connectors)
and the absence of ignition sparks under lightning current load of up to
50 kA (10/350 μs) has been proven. This novel, patented pipe clamp for
hazardous areas not only ensures safe electrical contact by means of two With regard to corrosion resistance, it must be checked whether the materials
contact clips, but also adequate mechanical fixing by an electrically insu- used for the Ex pipe clamps Ex BRS ... (e.g. Cu/galSn, brass/galSn, StSt, polyamide)
lated clamping body. can be used in the existing ambient conditions.

Ex Pipe Clamps

DECLARATION OF MANUFACTURER

Product: Pipe clamp for explosive zones
Product description: Part No. 540 821
Part No. 540 801
Part No. 540 803
Part No. 540 805
Part No. 540 810
Manufacturer: DEHN + SÖHNE GmbH + Co.KG.
Hans-Dehn-Str. 1
92318 Neumarkt i.d.OPf., Germany
Application:
The pipe clamp for explosive zones is used for connecting pipes of different materials and
diameters to the lightning equipotential bonding structure in explosive atmospheres.
Installed at a StSt pipe. Lightning currents are discharged without formation of sparks as specified in the technical
data sheet.
We herewith confirm that the pipe clamp for explosive zones is suitable for the use in explo-
sive zones 1 and 2 (gas, vapour, mist) and explosive zones 21 and 22 (combustible dust) in
connection with the installation instructions, P

not legally admissi-
ble and not necessary with respect to explosion protection.

Neumarkt i.d.OPf., 12 Okt. 2009
Dr.-Ing. Ralph Brocke
Director R&D
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Valid as of August 1, 2020 You will find detailed product information on our website 253