Diamond Dotted Insulation Paper Is Made Of Electrical

Chat Now
Product Details

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 Introduction

 

 

Product Parameters

Features:

• Insulation class A (105 °C) 
• Presspaper (in rolls), 100 % sulphate wood pulp
• High purity and mechanical strength
• Thermosetting coating of expoxi-phenolic resin (B-stage), put in rhombic pattern on one or both sides.
• Good compatibility with transformer impregnants after curing of the coating.
Note: The surfaces to be bonded must remain tightly pressed together during curing

 

Application:

• Layer insulation in liquid-immersed transformers

 

Available:

• In rolls. 1000 mm, 1220mm, 1320mm, 1500mm, 1700mm, 1900mm

• In strips minimum width 4 mm
• Available thickness: 0.05 - 1.0 mm (presspaper thickness)

 

 

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

Storage Life

month

6 months, room temperature, dry and well-ventilated environment

 


Welcome to contact Haotai, which is one of best diamond dotted insulation paper is made of electrical manufacturers and suppliers in China, you can also get diamond dotted insulation paper is made of electrical free sample from our factory.
Feedback