• Diamond Dotted Insulation Paper (DDP)
  • Diamond Dotted Insulation Paper (DDP)
  • Diamond Dotted Insulation Paper (DDP)
  • Diamond Dotted Insulation Paper (DDP)
  • Diamond Dotted Insulation Paper (DDP)
  • Diamond Dotted Insulation Paper (DDP)

Diamond Dotted Insulation Paper (DDP)

Application: Power, Electronic, Instrument
Phase: Three
Core: Core-type Transformer
Cooling Method: Dry-type Transformer
Winding Type: Separated Winding Transformer
Certification: ISO9001-2000
Customization:

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Basic Info.

Model NO.
DDP
Usage
Combined Transformer, Power Transformer, Distribution Transformer, Insulating Paper
Frequency Characteristics
Power Frequency
Shape of Core
OD
Brand
Jiangsuhuili
Purpose
Oil Immersed Transformer,Reactor,Mutual Inductor
Thickness
0.08mm,0.13mm,0.18mm,0.20mm,,0.25mm
Base Material Tightness
0.85-1.10
Single-Sided Adhesive Thickness
6-12um
Transport Package
Standard Wooden Pallet
Specification
ISO9001
Trademark
JIANGSUHUILI
Origin
Jiangsu Haian
HS Code
4811591000
Production Capacity
10, 000, 000kgs/Year

Product Description

products details: 

Diamond dotted insulation paper (DDP) is made by coating special modified epoxy resion on the high-performance insulating paper.It is widely applied in inter-layer insulation and turn insulation of oil-immersed power transformers. During application, the coated layer starts to melt under certain temperature in the process of coil drying and results in adhesion effect. As temperature rises, it starts to solidify and make coils' adjacent layers reliably bond into a fixed unit. The adhesive strength of epoxy resin is strong enough to prevent the displacement of coil layers in case of short-circuit, so as to ensure the long-term mechanical and electrical performance of insulation structure.
As the resin coat of diamond pattern adhesive insulating paper is dot shaped, the paper ensures oil immersion and the discharge of gas from insulation materials, effectively prevents electric corona and partial discharge, thus ensuring the safety and reliability of insulation structure.
Product Solidification Conditions:
First keep 90ºC±5ºC for three hours, and then rise temperature to temperature rises to 125ºC±5ºC,the product will completely solidifies after maintaining for six hours.
Storage:
Store in a dry and clean room, and keep away from fire and heat point, also keep away from the sun. The storage period is one year, qualified products exceeding the storage period can still be used.


No.

Performance

Unit

Requirement

1

Base material thickness and tolerance

mm

0.08±0.005

0.13±0.007

0.18±0.010

0.20±0.010

0.25±0.010

2

Base material tightness

g/cm³

0.85-1.10

3

Single-sided adhesive thickness

um

6-12

4

Moisture

%

4.0-8.0

5

Ash

%

≤1.0

6

Conductivity of water extract

ms/m

≤10

7

PH value of water extract

-

6.5-8.5

8

Oil absorption

%

≥20

9

Adhesive strength

Normal state

kpa

≥650
≥400

100ºC±2ºC

10

Contamination of transformer oil

-

No pollution(tanδ<0.001)

11

Tensile strength

MD

N/10mm

≥60
≥30

≥110   
≥50

≥160
≥70

≥180
≥80

≥230
≥100

CD

12

Tear strength

MD

mN

≥450

≥900

≥1350

≥1500

≥2000

CD

≥500

≥1000

≥1500

≥1700

≥2300

13

Breakdown Voltage

In air

kv

≥0.88

≥1.37

≥2.00

≥2.10

≥225

In oil

≥4.40

≥7.00

≥9.00

≥9.80

≥11.50


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Contact Supplier

Gold Member Since 2016

Suppliers with verified business licenses

4.0
Audited Supplier

Suppliers reviewed by inspection services.

Manufacturer/Factory & Trading Company
Number of Employees
97
Year of Establishment
2008-01-28