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Materials

Thermosets

Transformer Board is an electrical insulation paper

Transformer Board (Press Board T-IV)

  • Superior compression under static and dynamic loads
  • Excellent flexural strength
  • Good mechanical and electrical strength

Characteristics

Transformer Board (Press Board T-IV) is a type of electrical insulation paper made of cellulose fibers.

Applications

  • Spacers
  • Plates
  • Washers
  • Support strips
  • Gap barriers

Questions?

Our application engineers can help. With decades of experience in plastic material selection, we'll help you choose the optimal plastic for your application and budget.

 

To compare
the cost of this material to other thermosets, click here.

General Material Properties

Property   Parameter   units  LB 3.1A.1+ LB 3.1A.2++
             
Flexural Strength   MD   MPa 115 130
    CMD     105 120
             
Compressibility   C   % 2.7 2.2
    C rev     83 84
             
InternalPly Strength   Dry 23° C   MPa 112 115
    Dry 120 °C retention   % <79 73
    Oiled 23 °C retention     96 97
    Aged 23 °C retention     94 97
             
Apparent Density       g/cm8 1.24 1.30
             
MoistureContent       % 7.4 3.5
             
Shrinkage   Thickness   % 6.1 2.5
    MD     0.4 0.2
    CMD     0.6 0.3
             
Oil Absorption       % 12.5 10.01
             
AshContent       % 0.5 0.9
             
Conductivity of
aqueous extract
      mS/m 10.5 6.5
             
Electric strength in oil       kV/mm 14.0 13.5

+ Adhesive Type 1 Casein 9.0 – 30.0 mm    ++ Adhesive Type 2 Polyester 9.0 – 200.0 mm

The information on this page is intended as general guidance only and is only accurate at the time of posting (see date below). Specific material properties vary by manufacturer. Please contact a Dielectric application engineer for help in choosing the optimal material for your application and budget.

Posting Date: October 12, 2012