Fiber Optic Cables  
 

Fiber Optic Cables

Fig8 Self-supporting Cable

Application

This cable is ideal for in long distance and interoffice communication in strong current zone, as well as power transmission system. The built in suspension stranded rope provides high tensile strength, enabling the cable suited for large span installation, resulting in time and installation cost savings. The suspension wire, being an integral part of the cable, is easily available for gripping, fastening and pulling. This cable is featured of its lightness, low dispersion and high tensile strength.

Description

The cable consists of 5 to 36 fibers containing tubes or fi llers stranded in up to 3 layers around a central strength member and bound under a PE jacket. Each jelly fi lled tube contains 4 -12 fi bers. Solid or stranded steel wire coated with polyethylene is usually used as central strength member. Fiber glass reinforced plastics (FRP) will be used as central strength member if non metallic construction is required. Either aramid yarn or fi ber glass is wound around the tube to provide physical protection and tensile strength. Water blocking materials are fi lled in the interstice of the cable core, core wrapping layer/water blocking tape. The cable can be jacketed with either PE, PVC or LSZH though PE is the preferred option for water protection purpose. For direct burial, steel wire armour or corrugated steel tape armour is applied with an optional inner jacket of either PVC or PE. An optional Aluminium moisture tape can be incorporated under the jacket for water blocking and shielding purpose. Cable cores are connected with the suspension wires by PE sheath to form a fi gure “8” shape. An optional ripcord is located under the jacket to facilitate jacket removal.

Construction

Physical Properties

Fiber Count Nominal Weight(kg/km) Nominal Weight(lb/kft) Nominal Outer Diameter(mm) Nominal Outer Diameter(in) Maximum Pulling Load
Installation(N/Ib) In Service(N/Ib)
2-24 389.0 261.07 12.6*25.1 0.50*0.99 2670/600 890/200
36-72 429.0 287.92 14.7*27.1 0.58*1.07 2670/600 890/200
96-144 571.0 383.22 20.2*32.6 0.80*1.29 2670/600 890/200
2-24 303.0 203.36 9.1*21.5 0.36*0.85 2670/600 890/200
36-72 332.0 222.82 11.1*23.5 0.44*0.93 2670/600 890/200
96-144 417.0 279.87 15.9*28.3 0.63*1.12 2670/600 890/200

Construction

Physical Properties

Fiber Count Nominal Weight(kg/km) Nominal Weight(lb/kft) Nominal Outer Diameter(mm) Nominal Outer Diameter(in) Maximum Pulling Load
Installation(N/Ib) In Service(N/Ib)
2-24 389.0 261.07 12.6*25.1 0.50*0.99 2670/600 890/200
36-72 429.0 287.92 14.7*27.1 0.58*1.07 2670/600 890/200
96-144 571.0 383.22 20.2*32.6 0.80*1.29 2670/600 890/200

Mechanical Properties

Minimum Bending Radius:   Maximum Compressive Load: 4000N for unarmored cables;
Under installation: 20×OD   6000N for armoured cables
During operation 0×OD for unarmoured cables Repeated Impact: 4.4 N.m (J)
  20×OD for armoured cables Twist (Torsion): 180×10 times, 125×OD
Temperature Range:   Cyclic Flexing: 25 cycles for armoured cables.
Operating Temperature Range: -40℃(-40℉) to +70℃(+158℉)   100 cycles for unarmoured cables.
Storage Temperature Range: -50℃(-58℉) to +70℃(+158℉) Crush Resistance: 220N/cm (125lb/in)

Fiber Compliance

Temperature Cycling
Tensile Strength
Crush
Impact
Repeated Bending
Torsion
Kink
Cable Bend
Cool Bend

IEC60794-1-2-F2
IEC60794-1-2-E1A
IEC60794-1-2-E3
IEC60794-1-2-E4
IEC60794-1-2-E6
IEC60794-1-2-E7
IEC60794-1-2-E10
IEC60794-1-2-E11
IEC60794-1-2-E11

Safety Compliance

General Purpose Grade Flammability Test: OFN (UL1581)
Riser Grade Flammability Test: OFNR/FT4 (UL1666)
Plenum Grade Flammability Test: OFNP/FT6 (UL 910)
FRPVC Grade Flammability Test: IEC60332-1
LSZH Grade Halogen Content Test: IEC 60754-1
Acidity Test: IEC 60754;
Smoke Emission Test: IEC61034-1/2
LSFROH Grade  Halogen Content Test: IEC 60754-1
Acidity Test: IEC 60754;
Smoke Emission Test: IEC61034-1/2
Flammability Test: IEC60332-1 & IEC 60332-3C/A
FR Grade Fire Resistance Test : IEC 60331 / BS 6387 CWZ

Standard Compliance

        Telcordia GR-20          RUS 7 CFR 1755.900 (REA PE-90)                         ICEA S 87-640

Features

Suitable for self supporting aerial, duct and direct burial installation.
Tear away messenger simplifi es grounding.
Ripcord allows easy cable entry and jacket remova.
lCompatible with existing Fig 8 hardware.
Flexible buffer tube simplifi es routing and splicing.
Loose tube jelly fi lled for superior fi ber protection.
UV or moisture resistant for outdoor application.