SynTherm® – Insulating Materials SynKraft® EP grained

SynKraft® EP is a grained 2-layer insulation constructed from polyester film with high grade press board on one side. This composite material is suitable for class B (130 °C).

By stamping the press board the material achives a good suppleness and extensibility. At the same time it maintains its stability.

The minimum stability is required for in-serting the phase insulation between the windings. The suppleness allows protection against mechanical stress on deformation of the end of turns.

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Mainly as phase insulation in stators.

Delivery forms

Original rolls with approx. 600 mm width or slit rolls

Technical data

Property Unit of measure    
Nominal thickness before grain  approx. mm  0.15 0.25
Nominal thickness after grain  approx. mm  0.38 0.48
Film thickness  µm  23 23
Weight  m²/kg  5.3 3.3
Specific weight  g/m²  190 300
Specific weight tolerance  ± 12 ± 12
Tensile strength longitudinal  N/10 mm  ≥ 90 ≥ 175
Tensile strength transversal  N/10 mm  ≥ 70 ≥ 110
Elongation at break longitudinal  ≥ 3 ≥ 3
Elongation at break transversal  ≥ 10 ≥ 10
Property Unit of measure    
Nominal thickness  mm  0.15 0.25
Dielectric strength  kV  ≥ 4 ≥ 4