Description
This Excel OS2 singlemode tight buffered fibre cable is designed for internal and external installations where a CPR-compliant backbone is required. It is typically used in LAN and WAN links, building backbones and data centre cabling, and can be installed in trays, ducts and containment systems.
The cable uses 9/125µm OS2 singlemode fibre with 900µm tight buffering (0.85mm nominal), allowing for straightforward stripping and termination on site. It is constructed with E-glass yarn strength members and up to 24 colour-coded fibres, supporting standard structured cabling practices.
The black LSZH (LSOH) outer sheath is UV stabilised, low smoke and halogen-free, making it suitable for indoor use and external routes where limited environmental protection is required. CPR rated to Cca-s1a,d0,a1, it meets current fire performance requirements for public and commercial buildings.
Compatible with standard OS2 connectors, splicing equipment and network hardware, this cable is suitable for structured cabling installations requiring a compliant, tight buffered solution for backbone and distribution networks.
Specification
| Number of cores | 4, 6, 8, 12, 16, 24 |
| Type of tube | Tight |
| 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 | Cca |
| 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. | 6.5 mm |
| Tight buffered fibre material | LSZH |
| Tight buffered fibre diameter | 0.85±0.05mm |
| Strength member material | E-glass yarns |
| Sheath material | LSZH |
| Sheath thickness | Typical 1.1mm |
| Cable diameter | Approx. 6.5mm(4 cores), 6.6mm(6 cores), 7.0mm(8 cores)7.0mm(12 cores), 8.0mm(16 cores), 8.5mm(24 cores) |
| Cable weight | Approx. 34kg/km(4 cores), 36kg/km (6 cores), 39kg/km (8 cores) 43kg/km (12 cores), 52kg/km (16 cores), 63kg/km (24 cores) |
| Tensile strength (installation) | 800N(≤12 cores),1100N(>12 cores) |
| Tensile strength (working) | 400N(≤12 cores),550N(>12 cores) |
| Cable impact | 1 J |
| 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 (4 Core) | Download |
| Declaration of Performance (4 Core) | Download |
| Certificate of Conformity (4 Core) | Download |
Note: other core size datasheets available on request.
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