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Fiber Optic Cables
Multi Loose Under Water Cable
Application
This cable exhibits excellent tensile strength and side press retardancy, having excellent mechanical and
environmental performance. Featured by its thin diameter and light weight, it is best suited for underwater
condition, junction communication system and long haul communication system.
Description
The cable consists of 5 to 36 fi bers containing tubes or fi llers stranded in up to 3 layers around a central
strength member and bound under a PE jacket. Each 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. The cable incorporates the first
layer of PE inner jacket, a layer of corrugated steel tape armour, the second layer of PE inner jacket, a layer of
steel wire armour and PE outer jacket. An optional Aluminium moisture tape can be incorporated under the
jacket for water blocking and shielding purpose. 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 | 650.0 | 436.24 | 20.3 | 0.798 | 8000/1800 | 2650/595 |
| 26-36 | 716.0 | 480.54 | 21.6 | 0.849 | 8000/1800 | 2650/595 |
| 38-72 | 1008.0 | 676.51 | 25.2 | 0.991 | 8000/1800 | 2650/595 |
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 |
IEC60794-1-2-F2 |
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
Loose tube jelly filled for superior fiber protection
Colored coded fibers and binders for quick and easy identifi cation during installation.
High tensile strength design
Superior mechanical and environmental performance
Rugged and lightweight design
Durable construction to withstand high water pressure
Sufficient waterproof to withstand water penetration