Cables for telecommunications networks in strip and open-pit mines in areas where no explosion hazard exists, and underground mines, in areas without methane, and in excavation sites categorised as class “A” coal dust explosion hazard. The cables can be installed in shafts and excavation sites with an inclination angle up to 90

Cable Design

Conductors : Copper, solid class 1 acc. EN 60228
Insulation : Insulating polyethylene
Conductor colours : As per table at the end of this section
Stranding element : Conductors twisted in pairs, bunched pairs marked with tape in different colours or with following number, bunches stranded in layers to form the stranding element
Stranding element lapping : Polyester film
Inner sheath : PVC
Armour : Round galvanised steel wires
Outer sheath : Special, non-flammable PVC preventing flame propagation (acc. EN 60332-1 tested on a single cable and EN 60332-3-24, IEC 60332-3 tested on category C bunched cables), oxygen index > 29
Sheath colour : Grey