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SynTherm® – Insulating Materials

SynTherm® APA/80

SynTherm® APA/80 is a flexible 3-ply insulating material made of polyester film with a layer of aramid paper marked with green stripes on both sides.

Attributes

The proven dielectric properties of the polyester film and the excellent mechanical and thermal properties of the outer aramid paper 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.

Application

SynTherm® APA/80 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® APA/80 is used as core, interlayer and final insulation for transformers.

Standards
  • Suitable for class H (180 °C) systems
  • UL approved e.g. E247773
  • RoHS compliant according to 2011/65/EC
Delivery forms

Total thicknesses in µm:
220, 300, 360, 480

SynTherm® APA/80 is available:

  • in tapes: depending on material thickness on request beginning at 6 mm (thin material)
  • in rolls: 968 mm

Feathering:

  • Depth approx. 1-12 mm; distance approx. 1-10 mm
  • Form widths of 10 mm to 240 mm, thickness on request
Base

PET-film + aramid paper on both sides

Technical data
Typical mechanical properties
Nominal thickness  Typical thickness  Specific weight  Film thickness  Aramid paper thickness  Tensile strength longitudinal  Tensile strength transversal 
Unit of measure        
mm  0.22 0.30 0.36 0.48
mm  0.22±15 % 0.29±15 % 0.36±15 % 0.47±10 %
g/m²  200 310 405 560
µm  50 125 190 300
µm  80 80 80 80
N/cm  200 270 360 450
N/cm  130 260 300 350
Typical electrical properties
Nominal thickness  Dielectric strength 
Unit of measure        
mm  0.22 0.30 0.36 0.48
kV  10 16 23 > 25

SynTherm® is a registered trademark of SynFlex.