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Electrical Insulation Paper/Nomex Paper NMN 6640
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Electrical Insulation Paper/Nomex Paper NMN 6640

Quantity:
  • 10mt/Week
6640 composite material is made of two layer of du pont nomex paper with one of polyester film Class f insulation (155ºC) Excellent heat resistance, dielectric property and mechanical strength \good cutting and overhead resistance, high stiffness good compatibility with insulation varnish. As slot, interturn and liner insulation, f-grade motor and electric appliances. Nmn: 0.15mm-0.40mm form: Rolls Width 914mmm, sheets strips (width>5mm) Nmn insulation material-insulation paper consists of pet film, covered on both sides with calandered nomex1 paper. Nmn is a combined flexible material of thermal rating class f (155) with excellent mechanical properties like high tensile strength and high edge tear resistance combined with high electrical strength. Nmn has a smooth surface which allows a trouble free manufacture of low voltage motors where coil shooting machines are used. Nmn is mainly used as a slot liner, slot closure and phase insulation in the production of low voltage motors. Besides this nmn is used as interlayer insulation in transformers and other electrical machines and appliances.
NO Properties Unit Values
1 Nominal Thickness mm 0.15 0.18 0.2 0.23 0.25 0.3 0.35
2 Thickness Tolerance mm ± 0.02 ± 0.03 ± 0.04
3 Nominal Grammage g/ 180± 25 210± 30 240± 30 260± 35 300± 40 350± 50 430± 50
4 Tensile Strength MD No Bending N/10 ≥ 150 ≥ 160 ≥ 180 ≥ 200 ≥ 220 ≥ 270 ≥ 320
After Bending mm ≥ 80 ≥ 110 ≥ 130 ≥ 150 ≥ 180 ≥ 200 ≥ 260
TD No Bending   ≥ 90 ≥ 110 ≥ 130 ≥ 150 ≥ 180 ≥ 200 ≥ 250
After Bending   ≥ 70 ≥ 90 ≥ 110 ≥ 130 ≥ 150 ≥ 170 ≥ 200
5 Elongation TD % ≥ 10 ≥ 12
MD   ≥ 15 ≥ 18
6 Breakdowm Voltage TD KV ≥ 7 ≥ 10 ≥ 11 ≥ 12 ≥ 13 ≥ 15 ≥ 20
MD   ≥ 6 ≥ 8 ≥ 9 ≥ 10 ≥ 12 ≥ 13 ≥ 16
7 Bond Strength at 25C   No delamination
8 Bond Strength at 155C   No delamination, no blister, no adhesive flow
9 Temperature   ≥ 180
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