Diamond Dotted Insulation Paper Is Made Of Electrical

It is also known as DDP. The use of this B-stage resin coated paper increases the short circuit strength of distribution transformer coils. It is produced by coating modified epoxy resin in diamond dot patterns on electrical insulating paper. The size of the dots are carefully designed to avoid interfering with vacuum drying and oil impregnation. This type of presspaper is treated chemically and included nitrogen content to get a upgraded thermo performance.

Product Details

Diamond Dotted Insulation Paper Is Made Of Electrical

Diamond Dotted Insulation Paper Is Made Of Electrical


Product Introduction

 

Application:

• Layer insulation in liquid-immersed transformers


Hecheng also provide TU-DDP which is a higher grade of DDP, if you have inquiry just feel free to contact me.

 

Item

Unit

Value




Nominal Thickness

mm

0.08

0.13

0.17

0.25

Thickness Tolerance

mm

±0.005

±0.007

±0.01

±0.01

Norminal Grammage

g/㎡

80±8

115±11

160±16

240±24

Standard Width

mm

1000mm

Tensile Strength

Lengthwise

Mpa

≥75

Crosswise


≥35

Tear Strength

g

≥50

≥100

≥150

≥300

Breakdown Voltage

KV

≥0.8

≥1.1

≥1.4

≥1.6

Bond Strength

Kpa

≥450

Moisture Content

%

4-8

Curing Temperature and Time

90℃±5℃/3h or 130℃±5℃/6h

 

What to do if the package is damaged after receiving the product?

After a long period of sea transportation, our goods are packaged very sturdy. If you receive a loss of packaging, you can take a picture and send it to us.


Do you have laboratory ?

Yes, we have our own laboratory, which tests before each shipment and sends real data to customers.


Q: How can I get some samples?

A: For the test sample we can offer you free,but you need pay for the express fee.    We also can accept small order at the first cooperation and make production after you paying for us.


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