- Overview
- Product Description
- Detailed Photos
- Product Parameters
- Certifications
- Packaging & Shipping
- Company Profile
- FAQ
Basic Info.
Product Description
Description:
The corrugating paperboard is made of compacted press-board, and has good mechanical strength and electrical properties. It can be easily installed.
Characteristic:
1. High mechanical strength
2.Excellent electrical performance
3.Stable shape and accurate size
Application:
This product mainly applied to oil-immersed transformer as insulation material. It can even the distribution of the solid insulation materials.
Item | Test standard | Measured value | Standard value |
Thickness tolerance | IEC 641-2 | ≤ 1.6 mm 6.00 % | ±7.5 % |
Apparent density | IEC 641-2 | ≤ 1.6 mm 1.09 g/cm³ | 1.00 - 1.20 g/cm³ |
Min. tensile strength M.D. unfolded | IEC 641-2 | ≤ 1.6 mm 107 N/mm² | 70 N/mm² |
Min. tensile strength C.M.D, unfolded | IEC 641-2 | ≤ 1.6 mm 77 N/mm² | 50 N/mm² |
Min. elongation M.D, unfolded | IEC 641-2 | 3.9 % | 6.0 % |
Min. elongation C.M.D, unfolded | IEC 641-2 | 4.1 % | 8.0 % |
Max. moisture content | IEC 641-2 | 4.2 % | 8.0 % |
Max. ash content | IEC 641-2 | 0.3 % | 2.0 % |
pH of aqueous extract | IEC 641-2 | 6.3 | 6.0 - 9.0 |
Max. shrinkage M.D | IEC 641-2 | 0.4 % | 0.5 % |
Max. shrinkage C.M.D | IEC 641-2 | 0.6 % | 0.7 % |
Max. thickness shrinkage | IEC 641-2 | 3.9 % | 5.0 % |
Min. oil absorption | IEC 641-2 | ≤ 1.6 mm 13.7 % | 11.0 % |
Compressibility C | IEC 641-2 | ≤ 1.6 mm 9.4 % | 10.0 % |
Revers. part of compressibility Crev | IEC 641-2 | ≤ 1.6 mm 54 % | 45 % |
Min. breakdown voltage in oil | IEC 641-2 | ≤ 1.6 mm 50 kV/mm | 12 kV/mm |
Max. conductivity of aqueous extract | IEC 641-2 | ≤ 1.6 mm 3.3 mS/m | 10.0 mS/m |
Product quality: With consistent quality control throughout the entire process of product design and development, material procurement, production, quality inspection, and sales, the company has passed strict quality system certification and has been widely recognized by well-known customers. The company's products have advantages in quality.
Our products all meet the national standard, IEC standard and ISO standard. We have more than 60 national inventions and utility model patents, and the reliable quality of our products and our superb service has received warm praise from our customers!
We take customer satisfaction as our goal, trying our best to be more professional. In line with the principle of "putting customers first and pursuing continuous improvement" ,we will keep innovating and never stop on our way to become a new material supplier of transformer industry at home and abroad.
Customer visit
Q: How you make sure the quality?
a. We will consult on your requirements, and recommend suitable products to you.
b. Before production, we will send samples to you
c. During production, we will always check quality, package, delivery etc.
d. Before package, with QA to check everything
e. After shipment, we will consult with you about satisfaction.
Q: How to make sure the delivery date?
a. Before production, we will see we can meet your time or not.
b. After your payment, we start our preparing material immediately.
c. During production, We will inform you of the production scheduled.
d. Before shipment, we will inform you to pay the balance on time and booking immediately.