Our Transformer Insulation Pressboard is a high-performance dielectric material essential for the insulating structure of transformers and other power transmission equipment. Made from pure, unbleached cellulose fibers derived from long-fibered coniferous wood, it offers high chemical purity, excellent oil impregnability, and reliable mechanical strength. With outstanding dielectric properties and thermal stability, it effectively prevents electrical breakdown and ensures long-term durability. Primarily used in oil-filled power transformers and distribution transformers, it is also widely applied in electric machines, capacitors, and switchgear, providing essential insulation and protection for high-voltage applications.
1. High Dielectric Strength: Ensures stable insulation and prevents electrical breakdown.
2. Outstanding Oil Absorption: Enables deep oil impregnation, enhancing electrical performance and longevity.
3. Superior Mechanical Strength: Withstands mechanical stress, ensuring durability in demanding applications.
4. High Thermal Stability: Maintains structural integrity under prolonged high temperatures.
6. Low Shrinkage and Dimensional Stability: Minimizes deformation for a precise fit in transformer structures.
7. Versatile Applications: Ideal for oil-filled power transformers, distribution transformers, electric machines, capacitors, and switchgear.
8. Size Options: Available in 1150×800mm, 1000×2000mm, or customized dimensions.
9. Easy Processing: Can be punched, folded, cut, and formed without difficulty.
| Properties | Units | Values | |||
| ≤ 1.6mm |
1.6-3.0mm | >3.0-6.0mm | |||
| Thickness Tolerance | % | ≤±7.5 | ≤±5.0 | ||
| Density | g/cm³ | 1.0-1.2 | |||
| Tensile Strength |
MD | Mpa | ≥80 | ≥80 | ≥80 |
| TD | ≥55 | ≥55 | ≥50 | ||
| Elongation | MD | % | ≥6.0 | ||
| TD | ≥8.0 | ||||
| Shrinkage | MD | % | <0.7 | ||
| TD | <1.0 | ||||
| Moisture Content | % | ≤8.0 | |||
| Ash Content | % | ≤1.0 | |||
| Electric Conductivity | Ms/m | ≤8.0 | |||
| PH of Water Extractives | 6.0-9.0 | ||||
| Eectric breakdown Strengthinoil | KV/m m |
≥40 | ≥30 | ≥25 | |
* Oil-immersed Transformers: Essential for insulation, improving electrical performance and support.
* Capacitors: Insulating layer between electrodes for stable high-voltage insulation.
* Electric Machines & Appliance: Provides insulation for windings and cores to prevent current leakage.
* Switchgear & Instruments: Isolates circuit components in switches and instruments.
* Current Transformers & Reactors: Provides insulation and support.
* Other Electrical Equipment: Used as a spacer in transformer oil tanks and for making insulation components like slot wedges and winding supports.
GBS Die Cut, as adhesive tape supplier, focuses on the research & development, production and sales of various types of adhesive tapes for different industries and has been authorized as golden distributor of many noted brands for so many years, such as Nomex, Formex, Rogers Poron, 3M, Tesa, and so forth.
In the medical industry, medical tapes are not just for simple fixation; they play a crucial role in wound care, medical device adhesion, and surgical protection, directly impacting patient comfort
In today’s world, where efficiency, safety, and aesthetics are highly valued, floor marking tapes play a vital role in floor protection and guidance. Among these, 3M 471 Floor Tape stands
For inquiries about our products or price list, pls leave your email to us and we will be in touch within 24 hours.
