Sheath Characteristics

TYPICAL CHARACTERISTICS OF VARIOUS JACKET MATERIALS FOR CABLES
  Jacket compounds
  Thermoplastics Crosslinked material
Abbreviaton (1) LSFH TPU CR RX125A RX125M RX125TM REMS REMS FH
CENELEC-TYPE   TMPU EM2         E16
Thermal characteristics
Thermal resistance 20,000 h (°C) 90 90 60 120 120 120 130 120
Thermal resistance 24 hour (°C) 130 140 120 200 200 200 200 200
Shgort circuit (°C) 250 200 200 280 280 280 280 280
Resistance to cold, moved (°C) -25 -55 -25 -25 -25 -25 -40 -25
Mechanical characteristics
Tensile strength (N/mm²) 29.0 >25 >10 >10 >9 >10 >15 >10
Elongation at break (%) >125 >300 >300 >125 >125 >125 >300 >125
Abrasion resistance G E G G G G G G
Flexibility (2) S S E S G G G G
Electrical characteristics
Volume resistivity at 20°C (Ωcm) 10 e13 10 e12 10 e10 10 e14 10 e12 10 e12 10 e12 10 e12
Dielectric constant at 1 kHz 5 7 8 4.8 6 5 4.8 5.5
Fire characteristics
Flame retardant Yes No Yes Yes Yes Yes Yes Yes
Halogen free Yes Yes No Yes Yes Yes No Yes
Corrosive combustion gases No No Yes No No No Yes No
Smoke generation Low averge Strong Low Low Low Strong Low
Resistance to
Ionizing radiation (kGv) 1000 5000 500 1000 1000 1000 1000 1000
solvents (3) poor S S S S S S S
Oils and fuels (3) poor good good S good good E E
Acids and alkaline solutions (3) S S E good good E E good
Water/Hydrolysis (3) S E good good good E good good
Weather/UV radiation S good good good good good E good

Abbreviations: S = Satosfactoring, E = Excellent

(1) RX = RADOX, for other abbreviations see – Material designations

(2) depends greatly on cable construction

(3) influenced by type, time and medium temperature