Products Description
Electrical insulating paper is commonly used as the base material for DDP.
Name:Insulation Paper
Product parameters
| Parameter | Typical Value |
| Thickness Range | 0.05 – 0.30 mm |
| Grammage | 60 – 200 g/m² |
| Thermal Class | Class A (105°C) / Up to 130°C (Thermally Upgraded) |
| Dielectric Strength | ≥ 6–10 kV/mm (depending on thickness) |
| Moisture Content (at delivery) | ≤ 5–6% |
| Density | 0.90 – 1.10 g/cm³ |
| Tensile Strength (MD / TD) | ≥ 70 / ≥ 35 MPa |
| Oil Compatibility | Mineral oil, Natural ester oil, Synthetic ester oil |
Standards & Quality Control
This insulation paper complies with major international standards:
IEC 60641,ASTM D202,GB/T 5591
Each batch undergoes routine testing for thickness, moisture content, and dielectric strength. Test reports and Certificates of Analysis (COA) are available upon request.
Technical Support & Inquiry
If you are selecting insulation paper for a transformer project, please share:
-Transformer type and voltage level
-Insulation structure and application position
-Transformer oil type
Our technical team will support you with suitable insulation material selection and coordinated transformer accessories supply.
We are a professional manufacturer of insulation materials, support ODM/OEM, please contact us to get free samples
product display
applications
1.Electrical insulating paper is used as a base material for flexible materials, such as PMP, DDP, etc.
2.As a base material for oil duct strip
3.Directly applied to transformer windings
FAQ
Q:What are the classes of insulation paper?
A:Class Y Insulating Materials- 90°C. ...
Class A Insulating Materials – 105°C. ...
Class E Insulating Materials – 120°C. ...
Class B Insulating Materials – 130°C. ...
Class F Insulating Materials – 155°C. ...
Class H Insulating Materials – 180°C. ...
Class C Insulating Materials – >180°C.
Q：What is impregnated paper for electrical insulation classified as?
A：The class-A insulating material can withstand temperatures up to 105° C. A class of insulating materials is impregnated cotton, paper, oil, enamels, laminated wood, etc.
Q: How long is the delivery time?
A: Generally it is 15-20 days if polyimide film price is in stock, or it is 15-30 days.
Q: Which certification do you have?
A: The plant has passed the certificate of ISO 9001 quality system certification;
The products have passed ROHS test.
Q: Are you trading company or manufacturer?
A: We are manufacturer, having our own factories.
Q: Do you provide samples ? is it free or extra?
A: Yes, we can provide free samples, you only need to cover the shipping cost.
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