CW1128-1198 armoured telephone (SWA)

CW1128-1198 armoured telephone cable is used to interconnect equipment in fixed installations.  The petroleum jelly filler (PJF) acts as a water barrier so that the cable can be used in wet areas and the steel wire armour (SWA) provides protection against mechanical damage. The duct grade outer sheath is made from tough, durable polyethylene which is also UV and sunlight resistant.

These CW1128-1198 cables are suitable for use where the added protection of steel wire armour is required. Ideal for direct burial applications, running through ducting or in harsh environments. They offer a tough solution where cables are needed that will have to endure a variety of weather conditions and possible physical damage. Not recommended for indoor use. 


Construction – CW1128-1198 armoured (SWA) telephone cable
solid plain copper conductors
polyethylene (PE) core insulation
cores twisted into pairs or quad formation
petroleum jelly filler (PJF) with paper wrap
PE bedding & steel wire armour (SWA)
black duct grade PE outer sheath


Technical – CW1128-1198 armoured (SWA) telephone cable
conductor make-up: 1x 0.5mm diameter (0.196mm² area)
1x 0.9mm diameter (0.636mm² area)
bend radius: 10 x overall diameter fixed
maximum capacitance: 275pF/Km maximum
resistance @ 20°C: 1/0.5mm cores = 91 Ω/km max. per core
  1/0.9mm cores = 28 Ω/km max. per core
temperature range: 0°C to +40°C operating
construction: generally to BT CW1128/1198
core identification: coloured according to CW1128, see Colour Codes page


A printable PDF specification is available here: CW1128-1198 armoured (SWA) telephone cable.


For unarmoured or screened versions return to the Coaxial and Telephone front page.


All measurements should be considered nominal and images for illustration purposes only. Although Central Cables Ltd has made every reasonable effort to ensure its accuracy, the information contained herein is subject to error or omission and to change without notice. In no event will Central Cables Ltd be liable for any damages whatsoever, arising in connection with the information described.