Electrical Laminated Beech Wood for Transformer

• Application: Insulators, Electrical Winding Insulation, Winding Wire Coating Insulation, Electrical Base, Shell, Insulating Varnish, Switch Baseplate, Insulation Protection /Support Materials
• Type: Solid
• Chemistry: Hybrid Insulation
• Material: Beech Veneers, Phenol-Formaldehyde Resin, Wood
• Thermal Rating: F 155
• Maximum Voltage: >100KV
• Model NO.: Electrical laminated beech wood for transformer
• Classification: Hybrid Insulation Materials
• Certification: ISO9001
• Color: Natural
• Brand: Xincheng
• Usage: Insulation Protection Electronic Part for Transfor
• Product Name: Electrical Laminated Wood, Electric Laminated Wood
• Insulation Class: 145ºC-150ºC
• Rated Voltage: 500kv
• Feature: High Temperature Resistance 150ºC
• Volume Resistivity: ≥ 10amΩ/M
• Standard: GB/T20634, IEC61061
• OEM,ODM Service: Available
• Density: 0.9-1.1t/M3
• Heat Resistance Class: B
• Thickness: 10-200mm
• Surface Finishing: All-Sided Sanding
• Size: Customized Size
• Brand Name: Xincheng
• Transport Package: Wooden Case
• Specification: Customizable
• Trademark: XINCHENG
• Origin: China
• HS Code: 722800000
• Production Capacity: 10ton/Day

Product Description

Overview
Quick Details
Product name: electrical laminated wood, electric laminated wood
Place of Origin: China (Mainland)                                  Brand Name: XINCHENG
Shape: Sheets, Plate, Board, Customizable                  Size: Customized Size
Properties: Good Mechanical Properties                       Material: beech veneers, phenol-formaldehyde resin
Rated Voltage: 500kv                                                     Insulation class: 145ºC-150ºC
Density: 0.9-1.1t/m3                                                       Surface Finishing: All-Sided Sanding
Tensile Strength: ≥80MPa                                                Shear strength: ≥7MPa
Application: High Voltage, Oil-immersed transformer          Layers: Multi-Layered
Moisture content: ≤6.0%                                                  Thickness: Customer Demands,
Feature: High Temperature Resistance 150ºC                Type: Plywoods
Usage: Insulation Protection Electronic Part For Transformers   Color: Natural
Sample: Insulation Materials Sample Available                Standard: GB/T20634, IEC61061
Volume resistivity: ≥ 10aMΩ/m                                         Formaldehyde Emission Standards: E0
Thickness: 10-200mm                                                     Heat resistance class: B
Certification: ISO9001:2000,ISO14001,UL,3C,                OEM,ODM service: Available
 
New wood fiber rigid electrical insulation material 
Wood fiber rigid electrical insulation material is widely used in transformers, transformers in the insulation, support materials. With the proportion of moderate, high mechanical strength, easy vacuum drying, easy machining advantages, the dielectric constant close to the transformer oil, with a reasonable insulation can be 155 ºC long-term use of transformer oil. Electrician laminated wood in the oil-immersed transformer has been widely used in the manufacture of the upper and lower pressure plate, lead bracket, iron yoke pad and other parts used in the transformer to produce clips, it replaced the steel, insulating cardboard, epoxy cardboard, Epoxy glass cloth in these areas, thereby reducing the transformer's weight and material costs. Electrician laminates are made of high-quality beech wood cooking, peeling, drying veneer, coated with a special insulating plastic, the high temperature, high pressure and made.
Electrical laminated wood is widely used as insulating and supporting material in transformers and instrument transformers. It has many virtues such as moderate specific gravity, high mechanical properties, easy vacuum drying, easy mechanical processing etc. The dielectric constant of this material is close to transformer oil, so it makes a reasonable insulation match. And it can be used in transformer oil of 105ºC for long time.
People usually use this material to make upper/lower pressure pieces, cable supporting beams, limbs, spacer blocks in oil-immersed transformers, and clamps in instrument transformers. It replaced steel plates, insulating paper sheets, epoxy paper sheets, epoxide woven glass fabric lamination in these fields, and cut down the material expenses and weight of transformers.
The raw materials of electrical laminated wood are beech veneers. After boiling, rotary cutting, drying, these timbers are made to veneers. At last the veneers will be glued with special insulating glue water and processed under high temperature and pressure.

 
 Veneer Max Specification: (length × width ×thickness):4000×3000×200(mm)
1. Class: Temperature classification is B. 
2. Features: This product is mainly used for producing transformers; it is also the insulation material and support material in mutual inductor. Besides, it can be made for winding clamping plate, iron core plate, trapezoidal plate and clamping device. And it has many advantages, such as proper specific weight, high mechanical strength, good compatibility with transformer oil and easy machining. In addition, its dielectric constant is close to that of transformer oil and the insulation coordination between them is proper. It can be used in transformer oil with 105ºC for a long time.
3. Standard: GB/T20634, IEC61061
4. Application: 1.As part of oil-filled transformer, such as upper and lower pressure plate.
                 2.Lead bracket and iron yoke cushion block. 
                          3.Clamping device in mutual inductor.
 
Electrical laminated wood technical data

Item	Index		Unit	Index data
Physical  property	Density		T/m3	0.9-1.1
	Rate of water content		%	≤ 7
	Thickness shrinkage ratio after drying		%	≤ 1.5
	Oil absorption rate		%	> 10
	Ultimate thickness expansion rate after oil impregnation		%	≤ 0.5
	Compatibility with transformer oil			Good
Mechanical  property	Tensile strength	Parallel    direction	Mpa	≥50
	Compressive strength	Parallel direction	Mpa	≥50
		Vertical direction	Mpa	≥120
	Bending strength	Parallel direction	Mpa	≥100
		Vertical direction	Mpa	≥100
Electrical  property	Volume resistivity		MΩ/m	≥ 10a
	Electrical strength (50Hz)	20ºC Transformer (Vertical)	Mv/m	≥9
		90ºC Transformer (Vertical)	Mv/m	≥7
		20ºC Transformer (Parallel)	Kv/m	≥45
		90ºC Transformer	Kv/m	≥35
	Dielectric loss factor (tg δ) (50Hz)	20ºC Transformer oil		≤0.2
		90ºC Transformer oil		≤0.13
	Relative dielectric constant (∑ n)	20ºC Transformer oil		≤3
		90ºC Transformer oil		≤3.6

 
5.Technical parameter:

No.	Index Name		Unit	Index
	Thickness		mm	≤1.6	>1.6-3.0	>3.0-6.0
1	Thickness Deviation		%	±7.5	±5.0	±5.0
2	Performance Density		g/cm3	1.0-1.2	1.1-1.12	1.15-1.3
3	Tensile Strength(Portrait)		MPa	≥100	≥105	≥110
4	Tensile Strength(Transverse)		MPa	≥75	≥80	≥85
5	Elongation	Portrait	%	≥3.0	≥3.0	≥3.0
		Transverse		≥4.0	≥4.0	≥4.0
6	Compressibility		%	≤10.0	≤7.5	≤5.0
7	Shrinkage	Portrait	%	≤0.5	≤0.5	≤0.5
		Transverse		≤0.7	0.7	≤0.7
		Thickness Direction		≤0.5	≤0.5	≤0.5
8	Interlaminar Bonding	Check whether one or more layers of stripping surface rupture obviously rough or scared
9	Water Content		%	≤6.0	≤6.0	≤6.0
10	Ash Content		%	≤1.0	≤1.0	≤1.0
11	Water Extraction Conductivity		Ms/m	≤5.0	≤6.0	≤8.0
12	Ph Of Aqueous Extract			6.0-9.0	6.0-9.0	6.0-9.0
13	Oil Absorption		%	≥11.0	≥9.0	≥7.0

 
 
Electrical Laminated Wood Technique Target Table

Capability			Unit	Model
				Veneers technique target					Rings technique target
				P3B	C1B	C2B	C3B	C4B	T2B		T4B
Appearance Density			g/cm3	1.1-1.2	0.7-0.9	0.9-1.1	1.1-1.2	1.2-1.3	0.9-1.1		1.2-1.3
Moisture			%	≤6	≤6	≤6	≤6	≤6	≤6		≤6
Vertical Layer Direction Flexural Strength		Direction A	Mpa	≥150	≥45	≥55	≥65	≥80	Diameter>1000mm	≥100	≥140
		Direction B							Diameter≤1000mm	≥90	≥125
Vertical Layer Direction Flexural Modulus of elasticity		Direction A	Gpa	≥14	≥4.5	≥6	≥80	≥9	≥10		≥13
		Direction B		-
Compressibility (Below 20Mpa)		C	%	≤3	≤5	≤4	≤3	≤2.5	≤5		≤4
		Crev		≥70	≥70	≥70	≥70	≥70	≥70		≥70
Impact Strength (Side Test)		Direction A	KJ/m2	≥35	≥6	≥10	≥13	≥15	≥25		≥35
		Direction B		-
Shear Strength			Mpa	≥8	≥5	≥7	≥8	≥9	≥7		≥9
Vertical Layer Direction Eletric Strength			KV/mm	≥11	≥9	≥10	≥11	≥12	≥10		≥10
Parallel Layer Direction Puncture Voltage			KV	≥50	≥50	≥50	≥50	≥50	≥50		≥50
Shrinkage after drying	Direction A		%	≤0.2	≤0.3	≤0.3	≤0.3	≤0.3	Girth ≤0.5 Thickness ≤3		≤0.5 ≤3
	Direction B			≤0.5	≤0.3	≤0.3	≤0.3	≤0.3
	Thickness			≤3	≤3	≤3	≤3	≤3
Oil Absorption			%	≥8	≥20	≥15	≥8	≥5	≥15		≥5
Contaimination to Liqid Dielectric			-	≤0.1	≤0.1	≤0.1	≤0.1	≤0.1	≤0.1		≤0.1

  Remarks: B stands for birch in the model of electrical laminated wood. The technique of brich electrical laminated wood is the same to the beech.
 
 

 
Our company takes the core value of technology- leading, supreme customers, honesty and trustworthiness. Safety production, quality guaranteed, eco-friendly material is our promise. All the staff will provide high-quality products and best service for domestic and abroad customers through our exquisite technology and our best work style.
 
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% T/T in advance ,balance before shipment.
Q: Can you give me a discount price?
A: It is depending on the volume. The larger the volume, the more discount you can enjoy.
Q: Why is your price a bit higher than other Chinese suppliers?
A: To meet the requirement of different customers and areas, our factory manufactures various kinds of quality for each item at a wide range of price. We can offer the products of different quality levels depending on customer's target price and quality requirement.
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 in our company, with your company name marked on it, which our production will be based on.
Q: How can you deal with quality issues that customer feedback after receiving the goods?
1) Customers take photos of unqualified goods and then our sales staff will send them to Engineering Department to verify.
2) If the issue is confirmed, our sales staff will explain the root cause and take corrective actions in coming orders.
3) Finally, we will negotiate with our customers to make some compensation.
 
Packaging & Delivery
Packaging Details:
1.      Moisture-proof plastic bags packaging for laminated wood sheets and then loaded into the pallet.
Exporting wooden pallet with protective film .Exporting wooden case
2.Packaging Details: Normal Export Packing, Wrapped with plastic film , Moisture proof; then packed with plywood pallet.
Delivery Detail:  Within 15 days after receiving T/T payment ( at least 30%)
3. As per customer's  requirement.
Delivery Time: 10-20days
Port: Tiajin ,Shanghai, Dalian port
 
 
Please Contact Us
 Miss: lydia
Mob: [phone]      Fax: [phone]        
http://chinainsulation.en.made-in-china.com