|
MT SUPERTUBE is a new type of conduit. Its uniqueness is in
its three layer construction, incorporating a welded hermetically sealed
aluminium tube providing the very latest method of EMI screening covered both
internally and externally with a layer of LSOH Polyethylene. This gives the
product comparable strength to that of a metal conduit with the flexibility of a
PVC-U conduit
click to
enlarge
Shielding effectiveness
(attenuation in dB) is a measurement of the ratio between the external
environment field strength and that field strength measured after passing
through any material. This is recorded in a logarithmic scale. MT SUPERTUBE
multi layer conduit systems are designed to absorb and reflect emitted radiation
from sources of interference, whereby with an attenuation of 80dB would reduce
the resultant field within the Supertube by a factor of 10,000 (See tables).
|
SHIELDING EFFECTIVENESS |
|
Attenuation |
Field strength |
|
in dB |
reduction |
|
6 |
2 |
|
20 |
10 |
|
40 |
100 |
|
60 |
1000 |
|
80 |
10000 |
It can be clearly seen from the
graph that the shielding effectiveness of MT SUPERTUBE System is highly
effective throughout the entire frequency range, and will provide protection
from interference for data, telecommunication and signal cables and is far
superior in comparison to any other similar product currently available. This is
supplemented by the cost savings that can be made during installation and the
greater flexibility of the range. With MT SUPERTUBE, its unique construction and
smooth internal bore makes the stripping of cable insulation a thing of the
past, compared to steel conduit. Add to this the greater lengths through more
bends which can be achieved without stretching the cables, the pulling of cable
could not be easier. MT SUPERTUBE is a simple tubing product which can be
installed with no mess, minimal wastage and in a fraction of the time taken for
conventional systems, for cable protection, screening, fire protection and
halogen free applications.
INSTRUCTIONS FOR JOINTING MT
SUPERTUBE
-
FOR EMC SCREENING SYSTEM
-
Cut the tube squarely to
the required length. Tool no. 20001.
-
Remove 8mm of insulation
taking care not to cut the aluminium layer.
-
Push and rotate the
conduit into the fitting. Rotate through 90° (quarter of a turn)
clockwise until it seats on the flange in the fitting (avoid over
tightening).
-
FOR HALOGEN FREE SYSTEM
-
Cut the tube squarely to
the required length. Tool no. 20001.
-
Apply sealant (20006) to
the end of the tube.
-
Push the tube firmly into
the fitting spout.
|
|
FORMING/BENDING OF MT SUPERTUBE
|
|
|
|
MT SUPERTUBE can be formed by hand, although
care needs to be taken to avoid kinking. |
A tighter radius (90°) can be
achieved using the
MT SUPERTUBE
compact hand held bender. |
|
Marshall Tufflex Products