Description
Excel OS2 9/125 loose tube fibre optic cable is designed for internal and external installations where a durable singlemode backbone cable is required. Common applications include campus links, duct installations, building-to-building connections, and structured cabling backbones in commercial and industrial environments.
The cable uses G.652.D low water peak singlemode fibre, supporting OS2 performance with backwards compatibility to OS1 systems. It is suitable for high bandwidth and long-distance transmission at 1310nm and 1550nm wavelengths, with maximum attenuation values of 0.39 dB/km @1310nm and 0.25 dB/km @1550nm.
Each cable is constructed around a central loose tube containing up to 24 colour-coded 250μm fibres, protected by E-glass yarn strength members and a black LSZH outer sheath. The loose tube design helps protect fibres from mechanical stress during installation and operation.
Typical uses include external duct runs, riser routes, data centre interconnects, and telecoms infrastructure where low smoke, flame retardant cable is required.
Compatible with standard singlemode fibre hardware including LC, SC and ST terminations, splice trays, patch panels and fibre enclosures designed for OS2 networks.
Specification
| Number of cores | 4,12, 24 |
| Type of tube | Loose |
| Fibre type | Singlemode 9/125 |
| Category | OS2 |
| Rodent resistant | Yes |
| Outer sheath material | Copolymer, thermoplastic (LSOH) |
| Outer sheath colour | Black |
| Flame retardant according to IEC 60332-1-2 | Yes |
| Low smoke (acc. IEC 61034-2) | Yes |
| Reaction-to-fire class according to EN 13501-6 | B2ca |
| Smoke development class according to EN 13501-6 | s1a |
| Euro class flaming droplets/particles according to EN 13501-6 |
d0 |
| Euro class acidity according to EN 13501-6 | a1 |
| Outer diameter approx. | 6 mm |
| Loose tube fibre material | LSZH |
| Loose tube fibre diameter | 2.8 ± 0.1 mm (2-12 cores), 3.5 ± 0.20 mm (16-24 cores) |
| Loose tube fibre thickness | 0.35 ± 0.05 mm |
| Strength member material | E-glass yarns |
| Sheath material | LSZH |
| Sheath thickness | Typical 1.1mm |
| Cable diameter | 6.0 ± 0.20 mm (2-16 cores), 6.5 ± 0.20 mm (18-24 cores) |
| Cable weight | Approx. 40kg/km (2-16 cores), 45kg/km (18-24 cores) |
| Tensile strength (installation) | 660 N |
| Tensile strength (working) | 200 N |
| Crush resistance (installation) | 1000N |
| Crush resistance (working) | 300N |
| Torsion | Change of Attenuation ≤ 0.10dB (SM fibre), Change of Attenuation ≤ 0.30dB (MM fibre) |
| Temperature range (installation) | 30°C to +60°C |
| Temperature range (working) | 30°C to +60°C |
| Temperature range (storage) | -40°C to +60°C |
| Bending radius (short term) | 20 x Diameter |
| Bending radius (long term) | 10 x Diameter |
| Attenuation | @1310nm: 0.39 dB/km (Maximum) @1550nm: 0.25 dB/km (Maximum) For any 1000 metre: Max. 0.1 dB/km |
| Reflex index | @1310nm: 1.467 @1550nm: 1.468 |
| Cladding diameter | 125.0 ± 0.7 μm |
| Cladding non-circularity | ≤1% |
| Core-cladding concentricity error | ≤0.6 μm |
| Primary coating diameter | 242 ± 7 μm |
| Primary coating non-circularity | ≤5% |
| Primary coating - cladding concentricity error |
≤12 μm |
| Chromatic dispersion coefficient | In 1285-1330nm: ≤3.4 ps/km·nm @1550nm: ≤18.0 ps/km·nm @1625nm: ≤22.0 ps/km·nm |
| Zero Dispersion Wavelength, λ0 | 1300-1324 nm |
| Zero Dispersion Slope | ≤0.092 ps/(km·nm2) |
| Cut-off Wavelength, λcc | ≤1260 nm |
| Mode Field Diameter | @1310nm: 9.0±0.5 μm @1550nm: 10.4±0.5 μm |
| Macro Bending Loss (100 turns) | 25mm mandrel: ≤0.05 dB @1310 nm & 1550 nm 30mm mandrel: ≤0.05 dB @1625 nm |
| PMD Coefficient, Max. Uncabled | ≤0.5 ps/√km |
| PMDQ Link Design Value | ≤0.2 ps/√km |
| Proof Stress Level | ≥ 0.69 Gpa (≈1% strain) |
| Fibre Curl Radius | >4 m |
| Strip Force(peak) | 1.3 ≤ Fpeak.strip ≤ 8.9 N |
| Dynamic Fatigue Resistance Aged and Unaged | ≥20 |
| Static Fatigue Resistance | ≥23 |
Downloads
| Datasheet | Download |
| Declaration of Performance | Download |
| Certificate of Conformity | Download |
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