DPF Film Layer Insulation Transformer

Chat Now
Product Details

Product Application

It is also known as DPF. The use of this B-stage resin coated film increases the mechanical strength of transformer coils. it is produced by coating modified epoxy resin in diamond dot patterns on electrical insulating film. the size of the dots are carefully designed and arranged to cover only 36% of the surface, remaining 64% free for optimum SF6 gas distribution.


Nominal thicknessmm0.050.750.10
Thickness tolerancemm±0.005±0.01±0.01
Standard widthmm1000mm

Tensile StrengthN/10mmLengthwise≥100≥110≥150
Breakdown voltageKV≥6≥8≥9
Bond strengthKpa≥350

Curing temperature and time
90℃ ±5℃/16h or 130℃ ±5℃/6h
Storage life 
6 months, room temperature, dry and well-ventilated enviroment


1) Dry-type transformer layer insulation

2) Oil filled transformer layer insulation

3)SF6 high current voltage transformer wire winding insulation or layerinsulation film

4)Motor slot insulation, ot phase insulation film

5)Suitable for Automobile, Electronic application


electrical insulation film ddm

Packing & Delivery

electrical insulation paper

Size1.1M (L) * 1.1M (W) 
Weight2.2 KG
Packaging Details1.sealed packing with cardboard protection in roll, sea worthy plywood pallet shipping; 
2.800kg-1000kg per pallet .
3.pallet size 1100x1100x1250mm (for width 1000mm coil) 
4.Conveyance: 10 tons/20ft, 20tons/40HQ(no more than 27tons)

Welcome to contact Haotai, which is one of best dpf film layer insulation transformer manufacturers and suppliers in China, you can also get dpf film layer insulation transformer free sample from our factory.