Cords cables are mainly used to make patch cords or pigtails and connect different optical devices, its 900 µm buffer structure being optimized for connectorization. Each fibre is individually protected to allow easy handling. In case of many cords, bigger structures called “Breakout” are available.
For Indoor installation, these cables are manufactured with materials that limit fire hazards. The sheath is described as LSZH-FR, which stands for:
- LS (Low Smoke): Reduced emission of smoke when the cable is burning.
- ZH (Zero Halogen): The material is halogen free and does not emit toxic or corrosive smokes when burning.
- FR (Flame Retardant): Material does not propagate flame and is self-extinguishing when exposed to the flame.
For outdoor installation, the cables are designed with resistant outer sheaths, generally made of polyethylene to resist to more severe environment constraints (abrasion, temperature variation, crush resistance …). It features a watertight conception, obtained by using jelly and/or swellable elements, to stop the water propagation within the cable in case of cable accident.
Outdoor cables are mainly installed in ducts or directly buried.
In some case, Indoor-Outdoor structures are required. They combine the water tightness characteristics and LSZH-FR sheath.
Nexans also offers an extensive range of cables with other properties such as flame or fire non propagation or fire resistance, tunnel installation, rodent protection…