DIAMOND DOTTED PAPER
  • New insulating materials for transformers

  • Coils made this paper are able to withstand axial short circuit forces far better than coils made with uncoated papers

  • Helps minimize corona failure caused by a spark discharge through air entrapped between layers of insulating or within the insulating itself

  • Widely used in electrical equipments such as mutual inductance machine, transformer etc. as layers insulating materials

  • Available Width : 625mm, 960mm, 1020mm

  • Tested under IEC 554 ( Part 2 ) 2001



Typical properties of Diamond Dotted Paper
Specified Properties Units Standard
Thickness Tolerance Mm 0.08 , 0.13 , 0.17 , 0.20 ,0.25
Density g/mm^3 0.95 – 1.15
Tensile strength Min N/mm^2 MD 70 – 90
CMD 40 - 50
Elongation Min % MD 2.0 – 3.0
CMD 7.0 – 9.0
Breakdown volume Min KV/mm
In air  11-12
In oil  45-50
Oil Absorption Min % 8
Moisture Content % 4.0-8.0
Resin’s Content Min % 7 , 6 , 5 , 4 , 3.5
Ash Content Max % 1.0
Adhesion Strength Min kPa 450
dp   1000





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