Electrical Insulation Pressboard With Great Mechanical Strength For Oil-immersed Transformer

Short Description:

GBS Electrical Pressboard Paper, as an indispensable dielectric material for oil-immersed transformer insulation, is produced from 100% unbleached cellulose taken from long fiber coniferous wood. This is structured into a fibrous tissue without additional adhesive and then pressed. Its excellent chemical purity, mechanical strength and optimum oil impregnability make the product be widely used in electrical transmission and distribution equipment like Power Transformers, Shunt Reactors and Instrument Transformers etc.

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Electrical Insulation Pressboard With Great Mechanical Strength For Oil-immersed Transformer

Features

1. High mechanical and electric strength

2. Insulation class A (105℃)

3. Uniform clear color

4. Hot-pressed Pressboard,100 % sulphate pulp

5. High hardness and stiffness

6. Low shrinkage and high compatibility

7. High purity and mechanical strength

8. Further processing is ensured since the pressboard can be punched, folded, cut and formed without difficulty.

9. Size: 1150*800mm /1000*2000mm

10. Thickness: 0.08mm-4mm, can be customized

Properties		Units	Values
			≤1.6mm	>1.6-3.0mm		>3.0-6.0mm
Thickness Tolerance		%	≤±7.5	≤±5.0
Density		g/cm³	1.0-1.2
Tensile Strength	MD	Mpa	≥80	≥80		≥80
	TD		≥55	≥55		≥50
Elongation	MD	%	≥6.0
	TD		≥8.0
Shrinkage	MD	%	<0.7
	TD		<1.0
	Thickness		<5.0
Moisture Content		%	≤8.0
AshContent		%	≤1.0
Electric Conductivity		Ms/m	≤8.0
PH of Water Extractives			6.0-9.0
Electric breakdown Strength in oil		KV/mm	≥40		≥30	≥25

Application:

Such highly economical grade of rigid electrical insulation is manufactured in accordance with a number of international standards (including IEC 60641-3-1: 1992 Type B.3.1 and DIN 7733 Type PSP 3052) and is a 105ºC rated (Class A) electrical insulation material. It is widely used in electrical transmission and distribution equipment, and typical applications for this rigid insulation material include:

Phase barriers

Step blocks

Washers

Discs

Blocks

Rings

Clamping platers

Coil supports

Collars

Radial spaces and key strips

All of these can be provided by AG fabricated to your specific dimensional requirements.

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