SELF SUPPORTING AERIAL CABLE
- Overview
- Specifications
- Colour Scheme
These cables are used for junction network is exchange area for Aerial installation. These cables are generally based on REA and Pakistan Telecommunication Company Limited Specification.
Cable Constructions:
CONDUCTOR
Fully annealed high quality solid copper, the conductor sizes are 0.4, 0.5, 0.6 & 0.9 mm.
INSULATION
Colour high molecular Weight High-Density Polyethylene (HDPE)
COLOUR CODING
Colour are fully colour coded in accordance with PIC even count colour code.
PAIRING
Two coloured insulated conductors are uniformly twisted together to form a pair, Varying lay length is designed to minimize the cross talk and capacitance unbalance.
STRANDING UNITING
Twisted pairs are assembled into unit of 12, 13, 25, 50, 100 pairs, when desired for lay-up reason the units are divided into two or more sub-units, which are bind with durably coloured polyethylene Tapes to from a compact and circular cable.
CORE COVERING
The core is wrapped with non-hygroscopic and dielectric polyester Tape with suitable overlap.
SUSPENSION STRAND
Extra high strength of galvanized steel wires strands use as a support strand to from the shape as defined in the figure blew.
JACKET
Black High Molecular Weight Low Density Polyethylene (LDPE)
IDENTIFICATION
An Identification Tape durable marked with the Manufacturer’s Name, year of Manufacturing,Contract Number, Cable size & Type, if required, is placed under the Core Covering Tape. Alternatively, these details may be printed on the outer jacket of cable with length marking.
Construction Parameters | |
Fiber Type | ITU-T G.657 |
Fiber Count | 01 or 02 Fibers |
Strength Member | FRP (Fiber Reinforced Plastic) 2 x Parallel Robust strength members of are placed at two sides to keep mechanical strength) |
Outer Sheath (Material) | Low Smoke Zero Halogen (LSZH) |
Outer Sheath (Color) | White/Black |
Outer Diameter of Cable | 2.0 ± 0.2mm * 3.0 ± 0.2mm (Nominal) |
Outer Sheath Printing | Manufacturer Name, Year of manufacturing & Type of Cable shall be marked with 1 meter intervals and cable length in running meters |
Cable Weight | 18 kg/km (Maximum) |
Packing | Suitable Strong Reel |
Cutting Length | 1000 Meter or 2000 Meter ± 5% |
Optical Characteristics | |
Single Mode Fiber | ITU-T G.657 |
Fiber Colour Coding | As per TIA/EIA-598A&C |
Mode Field Diameter, μm | 8.6 to 9.5 ± 0.7 |
Cladding Diameter, μm | 125 ± 1 |
Core Clad Concentricity error, μm | ≤ 0.8 μm |
Cladding Non-Circularity, % | ≤ 2 % |
Cable Cut-off Wavelength, nm | ≤ 1260 nm |
Chromatic Dispersion (ps/nm.km) | ≤ 3.5 @ 1310nm ≤ 18 @ 1550nm |
Cabled Attenuation @ 1310 nm (dB/km) Cabled Attenuation @ 1550 nm (dB/km)
| ≤ 0.40 (Max) ≤ 0.30 (Max) |
Polarized Mode Dispersion (PMD) ps/√km | ≤ 0.2 |
Mechanical Characteristics | |
Temperature Range Operating Temperature Installation Temperature Storage & Transportation |
-20 °C to +70 °C at 100% Humidity -10 °C to +50 °C -20 °C to +70 °C |
Tensile Strength (N) (Max) | > 500N |
Crush Strength (N) (max) | 500N/10cm |
Cable Bending Test | 30mm (Dynamic) 15mm (Static) |