Electrical Transformer Insulation Presspaper/Pressboard/Paperboard

Product Description

Quick Details
Place of Origin: China (Mainland)                                      Brand Name: XINCHENG
Name: Electrical Insulating Densified PressPaper             Type: Insulation Paper
Product name: Electrical insulation paper presspan paper pressboard
Usage: Insulation Protection/ oil-immersed power transformer   Insulation class: A (105-ºC)
Material: Non-bleached sulphate wood pulp                      Rated Voltage: 35kv or above
Application: High Voltage/ High Temperature                   Tensile Strength: ≥80N/mm2
Feature: Heat-Resistant                                                     Density: 1.0~1.3g/cm3
Moisture content: ≤8%                                                      Ash Content: ≤1.0%
Oil Absorption: ≥10.0%                                                      pH of aqueous Extract: 6-9
Size: 6400*3200mm; 4400*2260mm or Customized Size
Thickness: 0.1mm~0.8mm, 0.8mm-8.0mm,8.0mm-45.0mm or customized;
Width: 625mm-1350mm or customized;                
Standard roll width: 1000mm & 1150mm, or customized;
Color: Original pulp color; brown, cyan, red                      Certification: ISO9001
Standard: IEC 60641 P.4.1.A, JIS C 2305 PB-2, DIN 7733 PSP 3030 & PSP 3055
Sample: Available                                                            style: sheet, roll and plate
Storage life: 12 months. Still effective if qualified in retest after 12 months.       OEM,ODM service: Available
 
 
Description
Transformer board electric insulation presspaper /pressboard
TRANSFORMER PRESSBOARDS ARE MADE WITH HIGH GRADE UNBLEACHED SULPHATE WOOD PULP HAVING CHARACTERISTICS OF HIGH MECHANICAL STRENGTH, ELECTRICAL STRENGTH, TENSILE STRENGTH, HIGH ELONGATION, LOW COMPRESSIBILITY AND PROPER BENDING RESISTANCE. THESE EXCELLENT PROPERTIES MAKE THE PRODUCT WIDELY USED IN ELECTRICAL TRANSMISSION AND DISTRIBUTION EQUIPMENT LIKE POWER TRANSFORMERS, SHUNT REACTORS AND INSTRUMENT TRANSFORMERS ETC.
Transformer pressboard is made of high-purity 100% sulphate wood pulp processed by high-pressure processing. This product has high chemical purity and high mechanical strength. After immersion, it has both mechanical and electrical properties.It offers good mechanical strength, high dielectric strength, high density, low shrinkage, good flatness. It is widely used as electrical insulation materials in oil transformers, Reactor and other electrical equipments and apparatus.
Insulation Pressboard is a special 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, pressboard is excellently suited as an insulation material in electric machines, capacitors and oil-filled transformers. 100% wood or cotton thick board is characterized by its high density.
Applications
Transformer pressboard is widely used in oil-immersed transformers and reactors, capacitors, switches, etc.
To use as insulations material in Power and Distribution Transformers. It is the base material for components like cyclinders, strips, spacers, rings. washers, plates, machine formed and moulded parts, punchings and laminates.
 
Features

1. Insulation class A (105 °C)
2. Hot-pressed Pressboard, 100 % sulphate pulp
3. High mechanical and electric strength, 
4. Uniform clear color, 
5. Uniform thickness, stable density and moisture content, good elongation and evenness. 
6. Excellent flexibility, strong applicability. 
7. The density deviation along CD direction of each single layer wet paper sheet must be controlled within the limits±1.5% comparing with the standard 
8. Ability of supply 8mm Transformer Pre-compressed Pressboard continuously. 
9. The primary quality is better than standard IEC60641-3-1. 
10. DCS control during producing process, to guarantee stable quality. 
11. Stable and reliable Insulation component sizes. 
12. Complete advanced Hi-tech testing and experimental facilities. 
13. The whole sets of testing facilities provide support for Lab testing processes right from analysis of Fiber micro structures      to pulp-beating, pressing, drying, shaping and controlling etc.
14. High hardness and stiffness
15. Low shrinkage and compatibility
16. High purity and mechanical strength
17. Good compatibility with liquid dielectrics
18. Further processing is ensured since the pressboard can be punched, folded, cut and formed without difficulty.

 
 
Technical sheet for  Electrical insulation paper/  presspahn paper /cardboard
Main Specification (Size: 2260mm*4400mm)

Item		Units	Value
Thickness		mm	≤1.6		1.7~3.0	3.1~6.0	6.1~8.0
Size		mm	2260*4400
Thickness tolerance		%	+/-6
Density		g/cm3	1.05~1.20	1.10~1.25
Elongation	MD	% ≥	3.0
	TD		4.0
Tensile strength	MD	Mpa ≥	105		110	115	115
	TD		80		90	90	90
Dielectric breakdown (in oil)		KV/mm  ≥	45		35	35	35
Electric conductivity of aqueous extraction		Ms/m ≤	4.5		5.0	6.0	8.0
pH value of aqueous extraction			6~8
Moisture content		%	≤6.0
Ash content		%	≤0.6
Oil absorption		% ≥	11.0		9.0	7.0	7.0
Color			Brown

 
Supply Ability
Supply Ability:
5000 Ton/Tons per Month
 
FAQ
Q: How long is your delivery time?
A: Generally it is 3-7 days if the goods are in stock. Or it is 10-30 days if the goods are not in stock, it is according to quantity.
Q: Do you provide samples ? is it free or extra ?
A: Yes, we could offer the sample for free charge but do not pay the cost of freight.
Q: How can you guarantee the quality of mass production is same with the sample sent to me before?
A: Our warehouse staff will leave another same sample as yours. The production process will be under your requirement.
Q: What is your terms of payment ?
A: Payment≤1000USD, 100% in advance. Payment≥1000USD, 30% TT in advance , balance before shipment.
 
Packaging & Delivery
Packaging Details
1. Moisture proof, Wooden pallet, wooden case, Standard export packing. 
2. According to customer's requirement. 
Port: Qingdao, Tianjin, Shanghai, Ningbo
 
Lead Time :

Quantity(Kilograms)	1 - 1000	1001 - 10000	10001 - 20000	>20000
Est. Time(days)	7	15	20	To be negotiated

 
 
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Please Contact Us
 Miss: lydia
Mob: [phone]      Fax: [phone]        
http://chinainsulation.en.made-in-china.com