Electrical Laminated Wood Boards Plywood Sheet

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Delivery term: The date of payment from buyers deliver within days
seat: Tianjin
Validity to: Long-term effective
Last update: 2020-01-06 06:30
Browse the number: 391
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Product details

Description

Plywood is produced by gluing together, in high temperature (145-150ºC) and under high pressure (6-12 MPa), 2mm-thick beech veneers with durable, moisture-resistant adhesives.


Specification:

Thickness: 10-70mm

Standard Length &Width:

3000 * 1500 mm

2400 * 1200 mm

2000 * 1000 mm

2200 * 1200 mm

Technical Parameter

Item

Index

Unit

Index data

Physical

property

Density

T/m3

0.9-1.1

Rate of water content

%

≤ 7

Thickness shrinkage ratio after drying

%

≤ 1.5

Oil absorption rate

%

> 10

Ultimate thickness expansion rate after oil impregnation

%

≤ 0.5

Compatibility with transformer oil


Good

Mechanical

property

Tensile strength

Parallel direction

Mpa

≥50

Compressive strength

Parallel direction

Mpa

≥50

Vertical direction

Mpa

≥120

Bending strength

Parallel direction

Mpa

≥100

Vertical direction

Mpa

≥100

Electrical

property

Volume resistivity

MΩ/m

≥ 10a

Electrical strength (50Hz)

20ºC Transformer (Vertical)

Mv/m

≥9

90ºC Transformer (Vertical)

Mv/m

≥7

20ºC Transformer (Parallel)

Kv/m

≥45

90ºC Transformer

Kv/m

≥35

Dielectric loss factor (tg δ) (50Hz)

20ºC Transformer oil


≤0.2

90ºC Transformer oil


≤0.13

Relative dielectric constant (∑ n)

20ºC Transformer oil


≤3

90ºC Transformer oil


≤3.6


Application

It is widely used as insulation and supporting material in oil-cooled transformers.


Package

Wooden cases

Pallet

http://www.insulationmaterial-china.com/

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