The high-temperature fire-resistant sleeve is made of high-quality alkali-free glass fiber yarn woven into a tube, coated with organic high-temperature silicone resin and processed at high temperature. High temperature resistant sleeve has the properties of flame retardant, heat insulation, heat preservation, resistance to electricity, and flexibility. High temperature resistant sleeves are mainly used for cable insulation protection in high temperature places such as steel plants, smelters, glass plants, fire fighting equipment, and large-scale transformer places.
High-temperature protective sleeves are widely used in high-temperature areas of electric power, chemical industry, metallurgy, shipbuilding, machinery manufacturing and other industries; cables in the heating zone of metallurgical enterprises, fluid pipelines, feed quick-change joints, rollers in rolling zones, rolling mill cables, and oil pipes ; Sawing peripheral cables, tubing and joints; ladle car cable coating and other fields.
High temperature fireproof sleeve performance test:
High temperature bending test:
After heating in a constant temperature oven at 260℃ for 48 hours, there is no aging or cracking on the surface or no peeling of the coating surface
Low temperature bending test:
After heating in a constant temperature oven at -70°C for 1 hour, there is no crack on the surface or no peeling of the coating film surface.
Film coating test:
After continuous use of the constant temperature furnace, no surface peeling or dissolution occurs.
Burn test:
Flame-retardant self-extinguishing and no self-ignition phenomenon (in accordance with UL “VW-1” and CSA “HFS” test)
Temperature resistance test:
(2000hr) 260 ℃ heating test, normal and no abnormality
(30sec) Heating test at 1200℃ The glass fiber is intact
Flame resistance test:
The burning speed is not less than 45s/25mm — SRG-1-7kv SRG-1-4kv, (the insulation grade of the motor can reach the C grade higher than H)
Normally low insulation breakdown voltage 7.0 kv /min 4.0 kv / min
Normal average insulation breakdown voltage 10.0 kv/min 7.0 kv/min
