6520 Polyestser Film Laminated Insulation Paper for Dry Transformers
US$1.80 | 500 kg (MOQ) |
Xuchang Chengrui Insulation Material Co., Ltd.
Henan, China
Last Login Date:
Jul 29, 2025
Main Products:
Electrical Insulation Paper, Polyester Film, Fiberglass Sleeving, Insulation Material, Nmn Nomex Paper, Pressboard Presspaper, Insulation Paper, Insulation Board, Insulation Sheet, Fiberglass Tape
Product Description
Company Info
Basic Info.
Product Description
This 6520/6521 insulation paper is a two-ply flexible laminated insulation material consisting of press paper and polyester film. The used adhesive is acid-free and temperature resistant. It has excellent electrical and mechanical properties, can be used for low-voltage motors, insulation, and cushioning interterm insulation. It can be used as slot and phase insulation in low voltage machines or as interlayer insulation in transformers.
Insulation paper is a two-layer flexible composite material, produced by B Class adhesive to adhere insulation paper with polyester film together
--Two layers: polyester film is bonded with insulation paper.
--Base Layer: 100% Sulfate wood pulp presspaper
--Outer Layer: Polyester film(PET) for Electrical Purposes
--Percentage:16% polyester film + 84% presspaper
Thickness: 0.18-0.35mm
Width: 1000mm or customized
Color: Blue, green, cyan, brown
Insulation Class: class E (120ºC)
Material: Polyester film and presspaper
Package: 50-55kg/roll
Package: Carton and Pallet
1. It is a Class E insulation material
2. Good dielectric properties
3. High heat resistance
4. Mechanical strength
This insulation material is suitable for E-class electrical motors as slot liner and turn-to-turn insulation, liner insulation, transformer insulation, and other electrical insulation with temperature requirements not exceeding 130ºC.
Item | Unit | Index | |||||||
Thickness | um | 75 | 100 | 125 | 175 | 188 | 200 | 250 | 300 |
Tolerance | % | ±3 | ±3 | ±3 | ±4 | ±4 | ±4 | ±4 | ±4 |
Tensile strength | Mpa | ≥ 180 | ≥170 | ≥ 70 | ≥ 160 | ≥ 150 | ≥ 150 | ≥ 50 | ≥ 150 |
Elongation | % | ≥ 100 | ≥ 100 | ≥ 100 | ≥ 100 | ≥ 100 | ≥ 100 | ≥ 100 | ≥ 100 |
Frequency electrical strength | V/um | ≥ 105 | ≥ 90 | ≥ 80 | ≥ 69 | ≥ 66 | ≥ 64 | ≥ 60 | ≥ 55 |
Volume resistivity | Ω.cm | ≥ 1.0x1014 | |||||||
Dissipation factor | - | ≥ 3.0x10-3 | |||||||
Thermal class | °C | 120 |