Picture Name

Products

PRODUCT CENTER

Snap-on silicone rubber insulated cover
Snap-on silicone rubber insulated cover
+
  • Snap-on silicone rubber insulated cover
  • Snap-on silicone rubber insulated cover

Snap-on silicone rubber insulated cover

1. Product introduction Made of high quality silicone rubber material, it has excellent electrical and anti-leakage performance, excellent weather resistance, high mechanical properties, water repellency and hydrophobic migration, excellent high temperature resistance, and can be used at -50 °C. Continuous use at ~+150 °C.

Category: Product Center

Key words: equipment


Product Description

1. Product introduction
Made of high quality silicone rubber material, it has excellent electrical and anti-leakage performance, excellent weather resistance, high mechanical properties, water repellency and hydrophobic migration, excellent high temperature resistance, and can be used at -50 °C. Continuous use at ~+150 °C.
2, product features
Installation is simple and fast, no tools are required, just snap the two ends together to complete the installation.
The snap-type insulated sheath tube is provided with a snap-type creepage growth page edge, that is, the distance of the creepage is increased, and the two ends of the product are firmly combined to further improve the insulation performance.
The snap-in insulated jacket tube coats the waterproof strip in the snap groove, which further enhances the pressure resistance and tightness of the product.
3. Application fields
The snap-in insulated sheathed tube is used in the overhead line of the electrified railway system to improve its insulation performance and prevent the occurrence of short-circuit accidents, and can effectively protect the insulation protection of the overhead bare wires and the transmission busbars.
The overhead line in the railway tunnel, because the train generates a large amount of water vapor when passing through the tunnel, it is not easy to be dissipated in the tunnel, causing the short circuit. In addition, due to the external climate, the above accident may occur, and the snap-insulated sheathed tube will be used. Avoid this accident.
When the grid empty line passes through the dense branches, it is very likely that the line will be short-circuited due to the falling of the branches on the wires. Solution: As long as the snap-in insulated jacket tube is installed on this line segment, the problem will be solved.
When the overhead line of the power grid passes through fish ponds and other places, it is easy to cause accidental casualties (multiple anglers are hit by high-voltage electric accidents every year throughout the country).
Due to the design of the electric railway or the operation of the power transmission post, the insulation performance of the transmission pole is deteriorated, which brings some safety hazards to the railway operation safety. Therefore, it is necessary to add some necessary insulation protection devices at the insulator, and the buckle type insulation sheath tube Can fully meet its needs.
4, selection parameters
Bare wire size Silicone rubber sheath diameter (unit: mm)
240 D28
120 D24
95 D21
70 D18
50 D16
35 D14
5, technical indicators
Performance Test Conditions Performance Experiment Method
Mechanical behavior Water absorption rate, %   ≤0.1 GB/T1034-1998 ISO 62
Hardness, Shore A   80±5 GB2411-1980 ISO 868
Tensile strength, MPa   ≥12.0 GB/T1040-1992 ISO604;
Elongation at break, %   ≥400 GB/T1040-1992 ISO 604
Low temperature flexibility -50±2℃/4hr without crack UL224-1992 UL224-1992
Thermal shock performance 225±2℃/4hr without crack UL224-1992 UL224-1992
Aging performance Tensile strength, MPa 136±2℃/168hr Retention of more than 75% GB/T7141-1992 ISO 604;ASTM D2671
Elongation, % 136±2℃/168hr Retention of more than 75% GB/T1040-1992 ISO604 ;ASTM D2671
Heat resistance Heat resistant temperature,℃   ≤90℃ GB1035-70 IEC 216
Electrical performance Breakdown strength,kV/mm   ≥20 GB1408-1989 IEC24  ASTM D 149
Volume resistivity,Ω.cm   ≥1.0×1014 GB1410-1989 IEC 93
Dielectric constant   3.5 GB1409-1988 IEC 250,
Chemical properties Flammability(OI)   ≥28.0 GB/T2406-1993 ISO 4589
Fire hazard test 960±15℃ Qualified GB5169.1-1997