Heat Shrinkable Sleeves and Tubes

Heat Shrinkable Sleeves provide insulation enhancement to bus-bar systems up to 36kv and protect them against flashover and accidental induced discharge. The use of bus-bar tubing allows equipment designers the freedom to reduce air spacing between bus-bar, such as in manufacture of switchgear cabinets where space is at a premium.Heat Shrinkable tubes are manufactured from high quality non-tracking, non-halogen, cross-linked based polymer which has excellent performance in high voltage environments & reduces the noxious and corrosive effects in fire situation.

Features
  • Reduce Bus-bar clearance.
  • Solve the problem of insulation among Bus-bar in Bus Duct.
  • Halogen free, flame retardant.
  • High dielectric strength.
  • High resistance to tracking, aging & corrosion.
  • It can be offered in constant length.

Technical Data

Sr. No. Properties Value Standard
Physical
1 Tensile Strength 11 N/mm² (MPA)(min.) ASTM D 412-06a
2 Ultimate Elongation 450% (Min.) ASTM D 412-06a
3 Longitudinal Change -10% (Max.) ASTM D2671
4 Density 1.15 ± 0.2 gm/cm³ ASTM D792
5 Hardness 45 ± 10 Shore D ASTM D2240
6 Water Absorption 0.5 % (max.) ASTM D570
Thermal 
7 Accelerated Ageing for 120°Cfor 400 Hrs
Tensile Strength 9 N/mm2 (Mpa) (min.) ASTM D 412-06a
Ultimate Elongation 300 % (Min.) ASTM D 412-06a
8 Heat Shock (250oC for 30 Mins.) No Cracking or flowing ESI 09-11
9 Shrink Temperature 125°C IEC 216
10 Continuous Temperature limit -40°C to + 110°C IEC 216
Electrical 
11 Dielectric Strength 23 KV/mm ASTM D 412-06a
12 Volume Resistivity 7.7 x 1015 Ohm.cm ASTM D257
13 Dielectric Constant 5 (Max.) ASTM D150
Flammability 
14 Flammability Pass UL-94 (V-1)