OPTICAL FIBRE CABLE LOOSE TUBE / JELLY FILLED DOUBLE JACKET / SINGLE ARMORED

23 TECHNICAL SPECIFICATION Cable Specification No.: KGST-2002-014 OPTICAL FIBRE CABLE LOOSE TUBE / JELLY FILLED DOUBLE JACKET / SINGLE ARMORED (LTD ARM CABLE) 23 1. SCOPE 1.1 Application This specification covers the general requirements for fiber optic telecommunication cables used for inter-building backbone in duct, direct buried and lashed aerial installation. 1.2 Cable Description 1) Jelly Filled / Double Jacket / Single Armored Rodent Protected Cable Single and 50 or 62.5 Multi mode color coded fibers, jelly filled color coded loose tubes, PE filler (if required), water swellable yarn around the central strength member, SZ-stranded around the dielectric CSM, water swellable tape, outer strength member, inner PE jacket, water swellable tape, corrugated steel tape armor and outer PE jacket. 2. OPTICAL FIBER The optical, geometrical and mechanical performance of the optical fiber shall be in accordance with Table 1 and 2 below. Table 1. The Optical, Geometrical and Mechanical Performance of the Multi Mode Fiber ITEMS UNITS SPECIFICATION 50 Multi Mode 62.5 Multi Mode Attenuation dB/km Bandwidth MHz.km Numerical Aperture -Core Diameter µm Core Non-circularity % Cladding Diameter µm Cladding Non-circularity % Core/Cladding Concentricity Error µm Coating Diameter µm Proof Test Kpsi ≤ 3.0 at 850nm ≤ 1.0 at 1300nm ≥ 400 at 850nm ≥ 600 at 1300nm 0.20±0.015 50±3.0 ≤ 6.0 125±2.0 ≤ 2.0 ≤ 3.0 245±15 ≥ 100 ≤ 3.5 at 850nm ≤ 1.0 at 1300nm ≥ 200 at 850nm ≥ 400 at 1300nm 0.275±0.015 62.5±3.0 ≤ 6.0 125±2.0 ≤ 2.0 ≤ 3.0 245±15 ≥ 100 *Note) Superior performance available upon request. PAGE 2 OF 8 23 Table 2. The Optical, Geometrical and Mechanical Performance of the Single Mode Fiber ITEMS Attenuation Chromatic Dispersion Zero Dispersion Wavelength Zero Dispersion Slope Cut-off Wavelength (λcc, 22m of a cabled fiber) Mode Field Diameter Mode Field Concentricity Cladding Diameter Cladding Non-circularity Coating Diameter Proof Test UNITS dB/km ps/nm.km nm ps/nm2.km nm µm µm µm % µm Kpsi SPECIFICATION ≤ 0.4 at 1310nm ≤ 0.25 at 1550nm ≤ 3.2 at 1285nm ~ 1330nm ≤ 18 at 1550nm 1300 ~ 1324 ≤ 0.093 ≤ 1270 9.3±1.0 ≤ 0.8 125±1.0 ≤ 1.0 245±15 ≥ 100 *Note) Superior performance available upon request. 3. CABLE CONSTRUCTION The construction of the cable shall be in accordance with Table 3 below. Table 3. Construction of the Cable ITEMS Type of Fiber Number of Fibers No. of Fibers per Tube DESCRIPTION Single Mode or 62.5 Multi Mode or 50 Multi Mode 2 ~ 72 Max. 12 Loose Buffer Tube Material Diameter PBT (Polybutylene Terephthalate) Nom. 2.4mm Filling Compound in Loose Buffer Tube Thixotropic Jelly Compound Filler (if necessary) Material Diameter Polyethylene rods (Natural color) Nom. 2.4mm Central Strength Member Water Blocking Material Core Wrapping Tape FRP (Fiberglass Reinforced Plastic) Water Swellable Yarn around the CSM (To prevent the water ingress into the cable core) Water Swellable Tape (To prevent the water ingress into the cable core) PAGE 3 OF 8 23 Table 3. Construction of the Cable(continued) ITEMS Outer Strength Member Ripcord DESCRIPTION Glass yarns (To provide the required tensile strength together) Two Ripcords (To provide easy cable entry, approx. 180° separation) Inner Jacket Material Thickness Black HDPE or MDPE Nom. 1.0mm, Min. 0.7mm Water Blocking Material Ripcord Water Swellable Tape (To prevent the ingress of water) Two Ripcords (To provide easy cable entry, approx. 180° separation) Armor Outer Jacket Material Thickness Material Thickness Steel Tape with Plastic Coating on Both Sides Nom. 0.15mm (Steel Tape) Nom. 0.05mm (Plastic Coating) Black HDPE or MDPE Nom. 1.5mm, Min. 1.2mm 4. FIBER AND LOOSE BUFFER TUBE IDENTIFICATION The color code of the loose buffer tubes and the individual fibers within each loose buffer tube shall be in accordance with Table 4 below. Table 4. The Color Code of the Individual Fibers and Loose Tubes No. Color 1 Blue 2 Orange 3 Green 4 Brown 5 Gray 6 White No. Color 7 Red 8 Black 9 Yellow 10 Violet 11 Pink 12 Aqua PAGE 4 OF 8 23 5. PHYSICAL / MECHANICAL / ENVIRONMENTAL PERFORMANCE The mechanical and environmental performance of the cable shall be in accordance with Table 5 below. Unless otherwise specified, all attenuation measurements required in this section shall be performed at 1550nm for single mode fiber (SM) and at 1300nm for multi mode fiber (MM). Table 5. The Mechanical and Environmental Performance of the Cable ITEMS Tensile Performance Crush Impact Repeated Bending TEST METHOD AND ACCEPTANCE CRITERIA # Test method: IEC 794-1-E1 -. Mandrel diameter: 30D (D = cable diameter) -. Tensile load: 2,700N for 1 hour # Acceptance Criteria ... - tailieumienphi.vn