The electrician laminated wood work piece The electrician laminated wood work piece The electrician laminated wood work piece The electrician laminated wood work piece

Product Description
Electrical Insulating Densified Wood Laminated Compressed Wood  from Electrical Insulation Direct Manufacturer
1. Proper specific weight;
2. High mechanical strength;
3. Good compatibility with transformer oil;
4. Easy machining;
5. Certification: ISO9001,SGS,UL,ROHS;
6. Henan Biggest Manufacturer Of Insulation Material,Since 1958;
7. Has 150,000,000RMB(US$23.04million) of registered capital.
Parameters:

 Item  Unit Index
Property     Density t/m3 0.9~1.1
 Rate of water content   ≤ 7
 Thickness shrinkage ratio after drying % ≤ 1.5
 Oil absorption rate   > 10
Ultimate thickness expansion rate after oil impregnation            ≤ 0.5
 Compatibility with transformer oil     Good
Mechanical  Tensile strength (Parallel direction)   ≥ 50
Compressive strength (Parallel direction) MPa ≥ 50
(Vertical direction)   ≥ 120
 Bending strength (Parallel direction)   ≥ 100
(Vertical direction)   ≥ 100
 Modulus of elasticity (Parallel direction)   ≥ 7000
Electrical  Volume resistivity MΩ/m ≥ 10a
Electrical strength (50Hz) 20℃transformer MV/ m ≥ 9
20℃ Transformer (Vertical)
90℃transformer ≥ 7
90℃ Transformer (Vertical)
20℃transformer KV/m ≥ 45
20℃ Transformer (Parallel)
 90℃transformer ≥ 35
 90℃ Transformer (Parallel)
  20℃ Transformer Oil      ≤ 0.02
Dielectric loss factor (tg δ) (50Hz)     90℃ Transformer Oil ≤ 0.13
Relative dielectric constant (∑ n) 20℃ Transformer Oil   ≤ 3
90℃ Transformer Oil ≤ 3.6