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SynTherm® – Insulating Materials

SynTherm® AP/50

SynTherm® AP/50 is a flexible 2-layer insulation made of polyester film with calandered aramid paper overlay.

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® AP/50 is a cost-effective insulating material used in electric motors as slot insulation, phase insulation and wedges.
SynTherm® AP/50 is used as core, interlayer und final insulation for transformers.

Standards
  • Suitable for Class F (155 °C) systems.
  • UL approved e.g. E247773
  • RoHS compliant according to 2011/65/EU
Delivery forms

Total thickness in µm:
100, 140, 180, 240, 300. Other thicknesses on request

SynTherm® AP/50 is available:

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

Feathering:

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

PET-film + aramid paper

Technical data
Typical mechanical properties
Nominal thickness  Typical thickness  Film thickness  Aramid paper thickness  Specific weight  Tensile strength longitudinal  Tensile strength transversal 
Unit of measure          
mm  0.10 0.14 0.18 0.24 0.30
mm  0.10±15 % 0.13±15 % 0.18±15 % 0.25±15 % 0.31±10 %
µm  50 75 125 190 250
µm  50 50 50 50 50
g/m²  115 150 220 310 400
N/cm  90 120 160 290 320
N/cm  100 150 250 350 450
Typical electrical properties
Nominal thickness  Dielectric strength 
Unit of measure          
mm  0.10 0.14 0,18 0,24 0.30
kV  9 11 16 24 > 25

SynTherm® is a registered trademark of SynFlex.