Air Core Self Supported Aerial Telephone Cables0 pages

Air Core Self Supported
Aerial Telephone Cables
Description
Used for aerial installation. The cable structure is completed by the application of a suitable core wrapping material, copolymer coated
moisture barrier, a parallel support messenger that with the core are covered by an overall the black outer jacketing. Outer jacketing
material is MDPE, LDPE or HDPE in accordance with ASTM D 1248. These types of cables have excellent mechanical performance.

Conductor

Identification

Solid annealed electrolytic copper. The
conductor sizes are 0.4, 0.5, 0.6, or 0.9 mm

A plastic tape, durable marked with the
manufacturer name, year of manufacture,
and cable size (if required) is placed under
the core wrapping.

Color Coding
Fully color-coding.

Insulation
Colored foam skin polyethylene insulation
or solid insulation in according to ASTM
1248, foam skin insulation with cellular
polyethylene covered with skin layer of highdensity polyethylene compound. Solid
insulation is made by medium or highdensity polyethylene compound.

Twisting / Quadding
Two or four insulated wire twisted together.
The twist length specially designed to
minimize the capacitance unbalance and
cross talk.

Cable Core
Twisted wires are assembled to form
substantially cylindrical groups of ten pairs
(units). Super units are assembled by
suitable number of units which are binded
with durable colored tapes and cabled to
complete cable core.

Core Wrapping
Anon-hydroscopic and dielectric polyester
tape is applied helically over the cable core.
Applied polyester tape at least overlaps by
5%.

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Screen
A single flat aluminum tape (0,15 mm
thickness of aluminum) coated both side 50
micron polyethylene film applied
longitudinally over core covering with an
min 5 mm overlap.

Support Messenger
According to ASTM A 475-66T galvanized
7 steel wires stranded rope having minimum
120 kg/mm2 is used as holding rope.

Outher Jacket
Over the corrugated steel tape, outer jacket
is extruded black low-density polyethylene
or medium density polyethylene in
accordance with ASTM D 1248. Outer jacket
polyethylene is include %2,5 ± 0,5 carbon
black for sunrise resistance.