Insulation Pressboard for Electrical Equipment/ Presspaper/ Paperboard for Transformer

• Application: Insulators, Electrical Winding Insulation, Electrical Base, Shell, Motor, Switch Baseplate
• Type: Insulation Sheet
• Chemistry: Inorganic Insulation
• Material: Paper
• Thermal Rating: A 105
• Maximum Voltage: 20KV~100KV
• Model NO.: Insulation Pressboard
• Classification: Inorganic Insulation Material
• Certification: ISO9001
• Color: Brown
• Brand: Chr
• Thickness: 0.8mm-5mm
• Length: 2m
• Width: 1m
• Storage Life: 1 Year
• Package: Pallet
• Transport Package: Pallet
• Specification: ISO9001 SGS
• Trademark: chr
• Origin: China
• HS Code: 48237000
• Production Capacity: 20mt/Week

Product Description

Product Description

Insulation pressboard or electrical insulation board or laminated insulation board is a special insulation product based on pure cellulose taken from long-fibred coniferous wood.  This is structured into a fibrous tissue without additional adhesive and then pressed. Due to its high chemical purity, the insulation pressboard is excellently suited as an insulation material in electric machines, capacitors, and oil-filled transformers.  It is a widely used insulation paper.
 

Product Parameters

Type: Insulation Paper
Thickness: 0.8-30mm
Size: 1000×2000mm 1000×1000mm
Color: Natural brown, red
Insulation class: Class A (105 ºC)

 

Our Advantages

1. 100% sulfate pulp
2. High Flexible and Soft
3. Low shrinkage and compatibility
4. High purity and mechanical strength
5. Good compatibility with liquid dielectrics
6. Further processing is ensured since the pressboard can be punched, folded, cut, and formed without difficulty.
 

Applications

To use as insulations material in Power and Distribution Transformers. It is also the base material for components like corrugated boards, cylinders, rings, and mouldable parts.

 

Specifications

Electrical Insulation Board Specifications

Properties		Unit	Min/max or range	Index
				≤1.6mm	>1.6mm-3.0mm	>3.0mm-6.0mm
Thickness Deviation		%	Max	±7.5	±5.0
Apparent density		g/cm^3	Range	1.00-1.20	1.10-1.25	1.15-1.30
Tensile Strength	MD	Mpa	Min	100	105	110
	CMD			75	80	85
Shrinkage	MD	%	Max	0.5
	CMD			0.7
	Thickness			5.0
Moisture content		%	Max	6.0
Ash content		%	Max	1.0
Electrical strength in oil		kV/mm	Min	40	35	3.0
Conductivity of Aqueous extract		mS/m	Max	5.0	6.0	8.0
Remark		in accordance with GB/T19264.3-2003/IEC60641-3-1.1992.B.3.1

                   

Number	Index		Unit	Standard	Test Result
1	Norminal thickness		mm	2.0	2.0
2	Norminal Grammage		g/cm3	1.1-1.25	1.17
3	Tensile Strength	MD CD	MPa	≥105 ≥80	141 108
4	Elongation	MD CD	%	≥3.0 ≥4.0	5.8 5.5
5	Breakdown Voltage		KV/mm	≥35	40
6	PH VALUE		/	6.0-6.9	7.8
7	Content of water		%	5.0-6.0	5.6