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DDP Diamond Dotted Insulation Paper----[[LIREN ELECTRICAL INSULATION MATERIALS]]
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DDP  Diamond Dotted Insulation Paper

 

 

Description:

Diamond Dotted Insulation Paper (DDP) consists of electrical insulation paper (IEC 60641) coated on both sides with diamond-shape dotted epoxy resin in B-stage.

DDP Insulation Paper has high electrical and mechanical strength and shows good adhesive property. The epoxy resin can be cured at medium temperature, forming a stable insulation structure.

Application:

DDP Insulation Paper is mainly used as turn-to-turn and layer insulation in oil immersed power and distribution transformers.

Technical Data:

 

Item

Properties

Units

LR-DDP90 Typical Values

1

Backing Paper Thickness

mm

0.08

0.13

0.18

0.20

0.25

2

Thickness Tolerance

mm

0.005

0.007

0.01

0.01

0.01

3

Coating Thickness per Side

m

6~12

6~12

6~12

6~12

6~12

4

Tensile Strength

MD

N/10mm

60

110

160

180

230

5

TD

N/10mm

30

50

70

80

100

6

Bond Strength at 25

KPa

650

650

650

650

650

7

Moisture Content

%

4.0~8.0

4.0~8.0

4.0~8.0

4.0~8.0

4.0~8.0

8

Oil Absorption

%

20

20

20

20

20

9

Breakdown Voltage in Air

KV

0.88

1.37

2.00

2.10

2.25

10

Breakdown Voltage in Oil

KV

4.40

7.00

9.00

9.80

11.50

11

Curing Condition

3h at 905, 6h at 1255

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 Rolls: 3" paper or plastic core, max. width 1200mm; standard width 960mm, 1000mm.
Tapes: from 5mm width upwards

  Special thickness or combinations can be supplied per customers request.

Shelf Life:

           Minimum 6 months at 30C; Minimum 12 months at 5C

Note: The technical information, data, recommendations, and other statements provided are based on tests or research which we believe to be reliable, but such information shall in no event constitute a warranty of any kind by Liren. Before using this product, all purchasers should carefully evaluate its suitability for their intended applications.

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