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Fiber Optic Cables
Central Loose Tube Cable
Application
This cable is characterized by light weight and small diameter, suitable for both aerial and duct installation. The
cable can also be used for direct burial for armoured option.
Description
Central loose tube cable contains one tube with 2 - 24 fi bers, which is fi lled with water blocking gel. Either
aramid yarn or fi ber glass is wound around the tube to provide physical protection and tensile strength. The
cable can be jacketed with either PE or LSZH. PE is the preferred option in outdoor environment for water
protection purpose. For direct burial, either steel wire armour or corrugated steel tape armour is applied with an
optional inner jacket of either PVC, PE or LSZH. An Aluminium moisture tape can be incorporated under the
jacket for water blocking and shielding purpose. A 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) | |||||
| 2-12 | 60.0 | 40.27 | 7.5 | 0.296 | 1500/337 | 445/100 |
| 14-24 | 65.0 | 43.62 | 8.5 | 0.335 | 1500/337 | 445/100 |
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) | |||||
| 2-12 | 125．0 | 83．89 | 10．5 | 0．414 | 2670/600 | 890/200 |
| 14-24 | 145．0 | 97．32 | 12．0 | 0．473 | 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) | |||||
| 2-12 | 170.0 | 114.09 | 10.5 | 0.414 | 8000/1800 | 2650/595 |
| 14-24 | 245.0 | 164.43 | 12.0 | 0.473 | 8000/1800 | 2650/595 |
Mechanical Properties
| Minimum Bending Radius: | Maximum Compressive Load: | 3000N | |
|---|---|---|---|
| Under installation: | 20×OD | Repeated Impact: | 4.4 N.m (J) |
| During operation | 10×OD for unarmoured cables | Twist (Torsion): | 180×10 times, 125×OD |
| 20×OD for armoured cables | Cyclic Flexing: | 25 cycles for armoured cables. | |
| Temperature Range: | 100 cycles for unarmoured cables. | ||
| Operating Temperature Range: | -40℃(-40℉) to +70℃(+158℉) | Crush Resistance: | 263N/cm (150lb/in) |
| Storage Temperature Range: | -50℃(-58℉) to +70℃(+158℉) |
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 construction provides environmental protection .
Loose tube jelly filled for superior fiber protection .
Colored coded fibers and binders for quick and easy identification during installation.
Very lightweight and flexible design allows for easy installation .
UV or moisture resistant for outdoor application .
Compact design with small cable diameter .
All Dielectric strength member .
Anti-termite and rodent protection as options .
Optional Aluminium moisture barrier for EMI protection .