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TECHNICAL INFORMATION
Technical information
Conduit systems
| 309
Internal
Polyethylene
layer
Aluminium
layer
External
Polyethylene
layer
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).
Shielding effectiveness
Shielding 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.
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
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.
MT Supertube
MT Supertube FR Plus performance
Fire Performance
Oxygen Index
BS EN ISO 4589-2
46.5%
Flammability Temperature BS EN ISO 4589-3
289
º
C
(Temperature Index)
Annex A
Elemental composition
Lassaigne Sodium Nitrogen
Negative
Fusion
Chloride
Negative
Bromide
Negative
Fluoride
Negative
Sulphur
Negative
Smoke Density
Low Smoke
Conduit Performance (BS EN 50086.1.2)
Cold temperature impact test
Heavy gauge performance
Compression
Low compression
Resistance to flame propagation
Pass
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
WARNING
NAIL PENETRATION: MT Supertube FR Plus complies with
requirements for BS 7671, BS 8436 and BS EN 61386. Screening to ENIEC 1196-1.
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.
8-10mm
Stripping Tool 12 – 16mm
Fittings
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.
Inspection Hole
Retention screw
Installation
Conduit
Mechanical
MT Supertube & MT Supertube &
MT Supertube FR MT Supertube FR
Electrical breakdown resistance
20,000 V
20,000 V
Temperature range °C
-45 +120
-45 +289
Thermal expansion coefficient
2.0 x 10-6mm/m/K 2.0 x 10-6mm/m/K
Thermal conductivity
0.45 W (mK)
0.45 W (mK)
Earth bonding/continuity test results
<0.05 Ω
<0.05 Ω
Standards
EN 61386-21
EN 61386-21
IEC 601196-1
IEC 601196-1
Electrical
MT Supertube MT Supertube FR
p220
Product
Information