Production Description:
1) Pre-compressed Pressboard, with Quality Standard: IEC60641-3-1:1992/GB/T 19264.3-2003
2) Thickness: 1.0mm, 1.5mm, 2.0mm, 2.5mm, 3.0mm, 4.0mm, 5.0mm, 6.0mm, 7.0mm, 8.0mm
3) Material: 100% unbleached sulfate pulp imported from Canada, Russia.
4) High density, high mechanical strength, high electric strength and low compression index.
5) 4400mm*2200, 6400mm*3200mm and customized size Transformer pressboard
H41 Transformer Board Technical Specifications:
|
No
|
Item
|
Unit
|
Specification
|
Standard
|
|
|
1
|
Thickness
|
mm
|
≤1.6mm
|
±7.0%
|
|
|
>1.6mm-8.0mm
|
±5.0%
|
||||
|
2
|
Density
|
g/cm3
|
≤1.6mm
|
1.00-1.20
|
|
|
>1.6mm-3.0mm
|
1.00-1.25
|
||||
|
>3.0mm-6.0mm
|
1.15-1.30
|
||||
|
>6.0mm-8.0mm
|
1.20-1.30
|
||||
|
3
|
Tensile strength
|
MD
|
MPa
|
≥90
|
|
|
CD
|
MPa
|
≥50
|
|||
|
4
|
Elongation
|
MD
|
%
|
≥3.0
|
|
|
CD
|
≥4.0
|
||||
|
5
|
Shrinkage
|
MD
|
%
|
≤1.0
|
|
|
CD
|
≤1.4
|
||||
|
TD
|
≤6.0
|
||||
|
6
|
Moisture
|
%
|
4.0—9.0
|
||
|
7
|
Ash Content
|
%
|
≤1.0
|
||
|
8
|
Conductivity of Aqueous Extract
|
Ms/m
|
≤10
|
||
|
9
|
PH of Aqueous Extract
|
/
|
6.0-9.0
|
||
|
10
|
Oil Absorbency
|
%
|
≥9.0
|
||
|
11
|
Electrical Strength (In Oil)
|
Kv/mm
|
1.0mm
|
≥35
|
|
|
1.5mm
|
≥30
|
||||
|
2.0mm
|
≥30
|
||||
|
2.5mm
|
≥27
|
||||
|
≥3.0mm
|
≥24
|
||||
|
12
|
Cutting Size Tolerance
|
mm
|
1.0mm-8.0mm
|
±10
|
|
|
13
|
Inclination Tolerance
|
mm
|
1.0mm-8.0mm
|
±10
|
|
Mainly used in oil-immersed transformer as insulation material, also used in reactor mutual inductance ware, electric device and etc.
Package:
Wrapped with vinyl film for waterproof, weaved material, then core paper packed, and wooden pallets.
