Aerial (Overhead)
Emtelle has many customers who have extensive aerial fibre networks, especially Fibre to the Home. This method avoids costly new-dig programmes.
Fibre blows well along pole-to-pole (catenary) routes and can be blown via poles directly into the building. The pole-top fittings are simple to use and widely accepted around the world.
The main features of aerial bundles are:
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Figure-8 design, keeps the strength member and tube bundle separate.
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Cable sheath materials combine toughness, flexibility and low weight.
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High UV resistance for outdoor use
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Both metal strength member and metal-free ('all-dielectric') versions available.
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We also manufacture overhead metal-free product with added resistance to electrical arc-tracking. This for deployment adjacent to overhead electrical power cables.
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Self-supporting constructions support their own weight, but can also be lashed. Strength members are bonded into the sheath assemblies, the cables being externally gripped, to support rated tensile loads and overloads. The strength members are normally high tensile steel, with compact and effective grips to suit.
Higher strength versions are also available for longer spans when required. -
Compatible with the Emtelle overhead closure.
An aerial fibreflow route being completed. Click to open schematic
Drops to Customer
The standard Emtelle single tube drops are very compact, near-circular and lightweight, having a minimal visual effect on the location. Their low weight means they can be strung with minimal sag yet low tension. Each contains tiny steel strength members, brass-protected for long life. Like the Figure-8 cables, these 'dropwires' can withstand many times their stringing tension before breaking, and so resist serious overloads due to high wind or bad weather. By using simple push-fit connectors at the branch closure, fibre can be blown from the PoP all the way to the customer's house or building in one quick blowing operation, with no splice at the branch closure.
5mm Drop: A single 5mm tube, in an OD of 8.0mm. MHT 1470
'Partly-Overhead?
Combinations of the installation technology are also popular, such as using DB routes to street corners, then poles to reach houses over streets and gardens. With fibreflow, this is simple, as all these products are inter-connectable, and both underground and over-ground portions benefit from the blown fibre advantages of stress-free fibre installation and minimal splicing.
