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Internal
Polyethylene
layer
Aluminium
layer
External
Polyethylene
layer
Email
sales@marshall-tufflex.com
www.marshall-tufflex.com
Conduit systems
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Technical information
General information
MT Supertube provides LSOH
polyethylene-coated aluminium cable
protection for installation where
halogen free products are a
requirement.
Material
Conduit: A seamless aluminium tube
sandwiched between two layers of
extruded LSOH polyethylene.
Fittings: LSOH polycarbonate or cast
metal with paint finish. (black or white).
Sheilding effectiveness
Sheilding effectiveness (attenuation in
dB) measures the ratio between the
external environment field strength
and the field strength after passing
through any material. This is recorded
in a logarithmic scale.
MT Supertube can
be shaped and slow
bends formed by
hand but care needs
to be taken to avoid
kinking.
For tighter radius
bends use compact
hand bender or
inspection elbows
and bends.
Shielding effectiveness
Attenuation
Field strength
in dB
reduction
6
2
20
10
40
100
60
1000
80
10000
0
1
10
100
1000
0
10
20
30
40
50
60
70
80
90
100
Frequency (MHz)
Attenuation dB
MT SUPERTUBE
SHIELDING EFFECTIVENESS IEC1196-1
Supertube
Supertube
with
coupler
8-10mm
Inspection Hole
Stripping Tool 12 – 16mm
Electrical breakdown resistance
20,000 V
Temperature range °C
-45 +120
Thermal expansion coefficient
2.0 x 10-6mm/m/K
Thermal conductivity
0.45 W (mK)
Earth bonding/continuity test results (per fitting)
< 0.05 Ω (0.00256 Ω)
Standards
BS EN 50086-2-1 1996 CLAUSE 12.1
DIN EN 50086-2-1 1995
IEC 601196–1
WARNING
NAIL PENETRATION: MT Supertube FR Plus complies with requirements for BS 7671, BS 8436
and BS EN 61386.
Electrical
Fittings
Mechanical
1. For EMC screening system
a.
Cut the tube squarely to the required length
(Tool No. 20001).
b.
Remove 12-16mm of insulation, taking care not
to cut the aluminium layer (Tool No. 20002).
c.
Push conduit firmly into fitting and secure using
screw located in spout.
d.
Fasten tube with a saddle within 150mm of
spout.
2. For halogen free system
a.
Cut the tube squarely to the required length.
Tool no. 20001.
b.
Apply sealant (20006) to the end of the tube.
c.
Push the tube firmly into the fitting spout.
d.
Fasten tube with a saddle within 150mm of
spout.
Tube reference
22010/22003
22505/22503
Outside diameter
(mm) OD
20
25
Internal diameter
(mm) ID
15.5
20
Wall thickness
(mm) W
2.25
2.5
Minimum bend radius
(8 x dia)
160
200
Weight per metre
(g)
145
184
Lengths
(m)
100/3
50/3
Suspension distance (maximum)Horizontal (mm)
1000
Vertical
(mm)
1200
MT Supertube multi layer conduit
systems absorbs and reflect emitted
radiation from sources of interference,
where an attenuation of 80dB would
reduce the resultant field within MT
Supertube by a factor of 10,000.
(See tables.)
The graphs above show that the shielding effectiveness of MT
Supertube is highly effective throughout the entire frequency
range and will provide protection from interference for data, telecoms
and signal cables.
Retention screw
Installation
MT Supertube
Conduit
