DIRECT BURIED NON METALLIC CABLE (DUMB)

Technical specification Standard
Number of fibers 2 – 288 fibred
Center strength member Fibre Reinforce Plastic (FRP)
Tube filling compound Jelly
Core Wrapping Waterproof yarn
Inside protect Aluminum tape
Outer sheath Black HDPE
Diameter of cable 9.7 mm – 17.2 mm
Minimum installation bending radius 20 times diameter of cable
Minimum operating bending radius 10 times diameter of cable
Installation tension 2700 N
Operating tension 2000N
Applied crush resistance 2000N/100mm
Installation temperature – 50oC to 50oC
Operating temperature – 30oC to 70oC
Storage temperature – 30oC to 70oC