Press Cable Paper DDP B Stage Dots

This is product id manufactured from insulation press paper and partially coated with epoxy resin on one or both side. The dots are arranged to have diamond pattern consisting of 9.5mm*9.5mm diamonds with 15.9 center spacing. This design improves the mechanical strength of oil-immersed transformer winding without reducing partial discharge levels.

Product Details

This is product id manufactured from insulation press paper and partially coated with epoxy resin on one or both side. 

The dots are arranged to have diamond pattern consisting of 9.5mm*9.5mm diamonds with 15.9 center spacing. 

DDP oil transformer insulation paper


This design improves the mechanical strength of oil-immersed transformer winding without reducing partial discharge levels. 


PropertyUnitValue
Thicknessmm0.080.130.150.180.200.250.300.35---0.50
mil35678101415-20
Densityg/cm30.85~1.10
One side coatingum6~12
Moisture content%4.0~8.0
Ash content%≤1.0
Water extraction of Electrical conductitymS/m≤10
PH Water extract
6.5~8.5
Oil absorption%≥20
Bond strengthKpa≥650
Tensile strength N/10mmTD60100110130160200≥250
MD3050557080100≥120

BDVKV0.881.371.502.002.102.25≥2.50


Forms of supply

1) Avaliable width: DDP strip minimum 4mm to master roll 1900mm.

2) Curing condition for Hecheng DDP:  cured for 90℃ ± 5℃ by 3 hours first, then for 125℃ ± 5℃ by 6 hours.

3) Storage and Shelf life: Minimum 12 mouths, to be stored in dry, clean warehouse, avoid direct sunlight and heat.


CertificationsDDP diamond dotted paper




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