Dielectric Cardboard

 

Induma Dielectric Paperboard are manufactured using only high-quality pulp without adhesives, colorants or resins, ensuring high purity and low electrical conductivity.

The sheets are formed intermittently in a paper machine by laminating several tiers, the sheets are pressed in a hydraulic press, dried and calendered to obtain a smooth finish.

All paperboard of dielectric line are light brown color, natural color of cellulose.

 

Free of Contaminants


We assure free contaminants, using the following equipment:

  • • Centrifugal separators: to remove heavy contaminants (sand, metallic particles or others).
  • • Pressurized Debugging: to remove light contaminants (waste of the pulp production process).
  • • Filter magnetic particles: remove possible magnetic particles of cellulose pulp.

application


Used in the manufacture of components for oil distribution transformers, power, and industrial, such as spacers, strips, cylinders, flanges, collars, barriers, spacers, etc.

Technichal Features


  • • Uniform thickness and high stability
  • • Low compressibility and shrinkage
  • • High mechanical strength and electrical
  • • High chemical purity
  • • High resistance to aging

Stock


By a program of production Induma´s works with a safety stock for main products, giving to our customers agility on delivery.



Products


Presspahn INDUMA MD 2.1

  • • Medium density cardboard
  • • Products accord IEC 60641-3-1
  • • High oil absorption
  • • High chemical purity
  • • Insulation class (105°C)
APPLICATION: Distribution transformer
Size of Sheet (mm)
1.000 X 1.200 1.200 X 1.800
Thicknesses Available (mm)
0,50 0,80 1,00 1,50 2,00 3,00 4,00
Other formats and thicknesses on request.

  • • High oil absorption
Size of Sheet (mm)
1.000 X 1.200 1.200 X 1.800
Thicknesses Available (mm)
0,50 0,80 1,00 1,50 2,00 3,00 4,00
Other formats and thicknesses on request.

PRESSPAHN INDUMA MD 4.1

  • • Malleable cardboar (issued by 50% moisture)
  • • Typical application for making molded and/or curved parts
  • • Products accord IEC 60641-3-1 Tipo B 4.1
  • • High chemical purity
  • • High oil absorption
  • • Insulation class (105°C)
  • • Shapes and thicknesses on request

PRESSPAHN INDUMA HD 3.1

  • • High density cardboard
  • • Products accord IEC 60641-3-1 Tipo B 3.1
  • • High chemical purity
  • • High stability
  • • High mechanical strengt
  • • Good compatibility with dielectric liquid
  • • Insulation class (105°C)
APPLICATION: Distribution transformer
Size of Sheet (mm)
1.000 X 1.200 1.200 X 1.800
Thicknesses Available (mm)
0,50 0,80 1,00 1,50 2,00 3,00 4,00
Other formats and thicknesses on request.