Diamond Dotted Paper For Layer Insulation

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Product Details

The product is manufactured from insulation press paper and partially coated with epoxy resin on one or both sides. The dots are arranged to have diamond pattern consisting of 9.5mm x9.5mm diamonds with 15.9mm center spacing. This design improves the mechanical strength of oil-immersed transformer windings without reducing partial discharge levels.

 

Advantages:

 

In the process of coil desiccation, the coated epoxy-resin would be melted in a certain temperature and become adhesive. With the temperature increased, the melted resin would cure to C-stage, and firmly adhere each adjoining layer of the coil. If a short circuit occurs in the coil, the resin bonding strength would sufficiently prevent the discharge of each winding layer, which ensures the long-term mechanical and physical properties of the insulation structure. As the resin coating distributes in a diamond-dotted pattern, little quantity of the resin would soak into the insulation paper during melting and curing process, which ensures the elimination of air content in the insulating paper and guarantees the saokage of oil, minizing the damages of corona and partial discharge.

 

Hecheng DDP can also be supplied in the "thermally upgraged" version, which is called TU DDP. It is achieved by adding a small quantity of nitrogenous additive.

 

 transformer resin epoxy insulation material diamond dotted paper  transformer resin epoxy insulation material diamond dotted paper  transformer resin epoxy insulation material diamond dotted paper

 

ITEM

Property

Unit

Index

1

Thickness and Tolerance

mm

0.08

±0.005

0.13

±0.007

0.15±0.01

0.18

±

0.01

0.20±0.01

0.25

±0.01

0.30

±0.01

0.35

±0.02

0.38

±0.02

0.45±

0.02

0.50±

0.03

 

2

Density

g/cm³

0.85~1.10

3

One Side Coating

µm

6~12

10~15

4

Moisture Content

%

4.0~8.0

5

Ash Content

%

                              ≤1.0

6

Water Extraction of Electrical Conductivity

mS/m

≤10

7

PH Water Extract


6.5~8.5

8

Oil Absorption

%

≥20

9

Bond Strength

Kpa

≥650

10

Tensile Strength

TD

 

N/10mm

60

110

160

180

230

≥250



MD


30

50

70

80

100

≥120

11

BDV

KV

0.88

1.37

2.00

2.10

2.25

≥2.50

Company Information

Our company have 4 line automatic production lines to ensure the delivery in time .

Top 3 manufacturer of class E&B&F&H&C insulation materials for motor and transformer in china 

transformer resin epoxy insulation material diamond dotted paper

 

Certifications

 UL(ULNO.:E353580),ROHS,MSDS,REACH and ISO9001:2008 approved.

transformer resin epoxy insulation material diamond dotted paper

Our Services

a.1 year warranty
b.OEM & ODM are welcome
c.Trial orders are available
d.Sample can be supplied in 7days.
e.Technical supports.
f.Shipping and express will be tracked and reported at any time after sending.


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