A Pull cable is used in safety critical systems for controlling conveyor belt systems in quarries, mines, tunnels, processing plants, port and railway depots etc. The cable (pullwire) is the primary stopping device as part of a Category 3 emergency stop switch system to BS EN ISO 13849-I PLe (Cat3).
The construction of this 6c pull wire cable is made up of
conductors comprising 4c x 24 x 0.2mm (0.75mm2) tinned copper wires extruded with T1 pvc and 2c x 30 x 0.25mm (1.5mm2) tinned copper wires extruded with T1 pvc. Cores are red, white, yellow, green for 0.75mm2 and black, blue for 1.5mm2. (see photo).
Cores are laid up around a pvc centre filler and twisted with a 60mm lay length with a polyester binder tape applied over the laid up cores.
A braid of high tensile brass coated steel wires (0.38mm) then form an armouring around the cores. The outer jacket is then applied in such a way that it is extruded into the braid to a depth of not less than 50% of the braid thickness. (see photo).
The 13.35mm OD jacket is made from T1 pvc compound and is circular, smooth and unmarked.
Voltage test on finished cable is 2000V a.c. 300v rating. Operating temp is 80DegC
Sheath colour in this instance is black but any colour is possible. Green and red are popular.
Cable can be supplied in lengths of 500m on plywood reels.
Pull cable complies with EU RoHS 3 Directive 2011/65/EU, REACH and IEC 60332-1.
If you require a specific design for a hazardous application please contact us.