SynTherm® – Insulating Materials SynTherm® NPN/50

SynTherm® NPN/50 is a flexible 3-ply insulation consisting of a polyester film with a calandered Nomex® layer with yellow strips.

The proven dielectric properties of the polyester film and the excellent mechanical and thermal properties of the outer Nomex® layers result in a high performance insulating material. The ability of the outer layers to absorb impregnants results in exceptional bonding between all winding components.

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Application

SynTherm® NPN/50 is a cost-effective insulating material which can be installed in suitable insulating systems of class H (180 °C) and is used in electric motors as slot insulation, phase insulation and wedges. SynTherm® NPN/50 is used as core, interlayer und final insulation for transformers.

Standards

  • Suitable for class H (180 °C) systems
  • Insulating material according to IEC 60626
  • UL approved, e.g. E247773
  • Test standard IEC 60626-2
  • Sample conditioning acc. to standard atmosphere 23/50

Delivery forms

Total thickness in μm:
130, 160, 180, 220, 240, 310, 370, 410, 470

SynTherm® NPN/50 can be supplied:

  • in slit rolls from widths of 6 mm (depending on thickness) and above
  • in rolls approx. width of 900 mm
  • in sheets on request: approx. 600 x 900 mm or 900 x 1000 mm


Optional overall diameter of the slit rolls/ rolls
approx. 240, 330 or 450 mm.

Feathering:

  • depth approx. 1 - 12 mm, distance approx. 1 - 10 mm
  • from widths of 10 to 240 mm and thickness of 0.24 mm

Base

PET-film + calandered Nomex® on both sides

Punched parts, bent & formed parts

We offer a wide range of punched and formed parts: Rolls, individual parts unsorted, sorted or stacked, adhesive on one or both sides, non-adhesive, with or without a grip tab.

 

More about punched parts

Technical data

Mechanical
Property Unit of measure
Total thickness mm 0.13 0.16 0.18 0.22 0.24 0.31 0.37 0.41 0.47
Thickness tolerance max. % ± 15 ± 15 ± 15 ± 15 ± 15 ± 15 ± 10 ± 10 ± 10
Film thickness µm 23 50 75 100 125 190 250 300 350
Nomex® paper thickness µm 50 50 50 50 50 50 50 50 50
Specific weight g/m² 140 170 200 230 270 360 450 520 590
Elongation at break longitudinal* % 15 15 15 15 20 20 20 20 20
Elongation at break transversal* % 20 20 20 20 20 25 25 25 25
Tensile strength transversal N/10 mm 80 90 105 120 150 200 300 310 350
Tensile strength longitudinal N/10 mm 100 150 170 190 220 270 330 350 400
Electrical
Property Unit of measure
Dielectric strength* kV 6 8 11 12 14 19 23 23 23
Total thickness mm 0.13 0.16 0.18 0.22 0.24 0.31 0.37 0.41
Total thickness µm 0.47