SynTherm® – Insulating Materials SynTherm® NP/50

SynTherm® NP/50 is a flexible 2-layer insulation made of polyester film with calandered Nomex® overlay.

SynTherm® NP/50 is a high-class insulation material due to the proven electrical properties of the polyester film and the excellent mechanical and thermal properties of the outer Nomex® overlays. The outer overlays’ impregnant absorptivity allows excellent bonding of all winding components.

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Application

SynTherm® NP/50 is an economic option and suitable for use as slot insulation, wedges, and phase insulation in electric motors.
In transformers it can be used as core, layer, or cover insulation.

Standards

  • Class F (155 °C) acc. to IEC 60085
  • Insulation material to IEC 60626
  • Test standard IEC 60626-2
  • Sample conditioning acc. to standard atmosphere 23/50

Delivery forms

Total thickness µm:
80, 100, 140, 160, 180, 240, 300, 350, 410.
Other total thickness on request.

SynTherm® NP/50 available in delivery formats:

  • tapes starting from 4 mm width
  • rolls with approx. 900 mm width
  • on request: approx. 600 x 900 mm
  • 900 x 1000 mm


Outer diameters of tapes/ rolls optionally approx. 240/ 330/ 450 mm.

Feathering:

  • depth approx. 1 - 12 mm, distance approx. 1 - 10 mm
  • as of 10 mm up to 240 mm width and 0.20 mm thickness

Base

PET-film + aramid paper

Technical data

Mechanical
Property Unit of measure
Total thickness mm 0.08 0.10 0.14 0.18 0.24 0.30
Film thickness µm 23 50 75 125 190 250
Nomex® paper thickness µm 50 50 50 50 50 50
Specific weight g/m² 95 125 160 230 320 390
Tensile strength longitudinal N/10 mm 100 105 130 160 230 280
Tensile strength transversal N/10 mm 70 80 90 100 200 300
Elongation at break longitudinal* % 15 15 15 15 20 20
Elongation at break transversal* % 20 20 20 20 20 20
Electrical
Property Unit of measure
Total thickness mm 0.08 0.10 0.14 0.18 0.24 0.30
Dielectic strength kV 5 7 9 12 15 18