Overhead Line Insulation Sleeve (OLIS)

OLIS provides retrofit insulation for overhead conductors to help prevent electrical outages caused by trees or wildlife coming into the contact with distribution lines. It is manufactured from high quality Non Tracking Cross linked Polyolefin material. Easy & quick installation widely used in the electrification railway and naked –wire in substation for insulating protection. These cover are designed to insulate existing bare lines without costly conductor replacement expenditure or additional line hardware.


Technical Data

Sr. No. Properties Value Standard
Physical
1 Tensile Strength 11 N/mm² (MPA)(min.) ASTM D 412-06a
2 Ultimate Elongation 375% (Min.) ASTM D 412-06a
3 Hardness 80 ± 10 Shore A ASTM D2240
4 Water Absorption 0.5 % (max.) ASTM D570
Thermal 
5 Thermal Impact 120°C ± 2°C / 4Hrs No Cracking/Flowing
6 Low Temperature Flexibility -40°C / 4Hrs No Cracking/Flowing
Electrical 
7 Dielectric Strength 23 KV/mm. (Min.) ASTM D149
8 Breakdown Voltage (kV) 45 KV (Min.) ASTM D149
9 Volume Resistivity ˃1 x 1014 Ohm.cm ASTM D257
10 Dielectric Constant 5 (Max.) ASTM D150