Three-layer insulation § № ☆ pressure insulating plastic sheet ★ 〇 ○ ● insulation rubber sheet density ◎ ◇ ◆ 

 Three-layer insulation § № ☆ pressure insulating plastic sheet ★ 〇 ○ ● insulation rubber sheet density ◎ ◇ ◆ 


 Three-layer insulation § № ☆ pressure insulating plastic sheet ★ 〇 ○ ● insulation rubber sheet density ◎ ◇ ◆ 

 Triple Insulated § № ☆ Hebei Five-Star 3240-3 epoxy glass cloth laminates / epoxy insulation board 

 Temperature rating: B class 
 Color: color (dark yellow) 
 Features: electrical performance is lower than the 3240-1 board for the 3240 economic products. 
 Uses: Suitable for general machinery, electrical equipment insulation parts. 
 Thickness: 0.5 ~~ 50mm 
 Nominal size: 970 × 1970mm; 1020 × 2040mm; 1220 × 2470mm 
 Application: 
 1.3240: mechanical, electrical and electronic, temperature and high mechanical strength, good stability of electrical properties under high humidity 
 2.3240-1: similar to 3240, the general performance is lower than 3240, the economy is good 
 3.3240-3: similar to 3240, the general performance is lower than 3240-1, the economy is good 
 Epoxy insulation board products technical indicators 
 Item Unit Type 
 3240 3240-13240-3 
 Vertical layer 
 Flexural strength of A: normal ≥ MPa 340 320 320 
 E-1/150: 150 ± 5 ℃ ≥ MPa --- 
 Layer parallel to the impact strength (Simple Beam) ≥ kJ/m2 33 30 30 
 Vertical layer to the electric strength 
 (90 ± 2 ℃ transformer oil, thickness 1mm) ≥ kV / mm 14.2 14.2 8.0 
 (Thickness 3mm) 
 Layer parallel to the breakdown voltage 
 (At 90 ± 2 ℃ transformer oil) ≥ kV 35 30 30 
 The relative dielectric constant (48-62Hz) ≤ - 5.5 - 
 The relative permittivity (1MHz) ≤ - 5.5 - 
 Dielectric loss factor (48-62Hz) ≤ - 0.04 - 
 Dielectric loss factor (1MHz) ≤ - 0.04 - 
 Surface resistance A: Normal W --- 
 Insulation resistance after immersion in water (D-24/23) ≥ W 5.0 × 108 1.0 × 108 1.0 × 108 
 Absorbent (D-24/23, plate thickness 1.6mm) ≤ mg 19 19 19 
 Density g/cm3 (1.70-1.90) 
 Flammability level --- 
 Color - true colors true colors true colors 
 Implementation of standards - Hebei five-star standard 





 Withstand voltage insulating plastic sheet ★ 〇 ○ ● density of insulation rubber plate ◎ ◇ ◆