Electrical Insulating Pressboard for Oil Transformer

Electrical Insulating Pressboard for Oil Transformer image

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Basic Info.

Model NO.

Pressboard

Brand

NJREC or OEM

Size

1000*2000mm

Delivery

30days

Voltage

110kv

Thicknesses

1mm-5mm

Transport Package

Carton/Wooden Pallet

Specification

0.50~6.0MM

Origin

China

HS Code

85462090

Production Capacity

10000/Year

Product Description

Index.		Unit	Values
	electrical presspahn Cardboard transformer insulation pressboard			≤1.6	>1.6~3.0	>3.0
1	Nominal thickness tolerance		%	≤10(±)
2	Nominal Grammage		g/cm3	1.00~1.20	1.00~1.25	1.15~1.30
3	Shear strength,M.D.		Mpa	≥100	≥105	≥110
4	Shear strength,C.M.D.		Mpa	≥75	≥80	≥85
5	Elongation (M.D.)		%	≥3.0
6	Elongation (C.M.D.)		%	≥4.0
7	Shrinkage		%	≤10.0	≤7.5	≤5.0
8	Shrinkage which would resume		%	≥45	≥50	≥50
11	Shrinkage:	M.D.	%	≤0.5
		C.M.D.		≤0.7
		Thickness direction		≤4.0
12	Moisture content		%	≤6.0
13	Ash content		%	≤1.0
14	Electrical conductivity of aquesous extract		ms/m	≤1.6	>1.6~3.0	>3.0
15	Aquesous extract (PH)		–	6~9
16	Oil absorption		%	≥11.0	≥9.0	≥7.0
17	Voltage resistant strength(In air)		MV/m	≥12	≥11	≥10
18	Voltage resistant strength(In oil)		MV/m	≥40	≥35	≥30

Diamond dotted paper (DDP) is made of electrical insulating paper with diamond shape epoxy resin dotted on one side
or both sides. The epoxy used in DDP contains a kind of in hardener material. It is dry and crisp material at normal
temperature.

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