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POROBAND ® SI 0790

POROBAND ® SI 0790

POROBAND ® SI 0790 consists of mica paper based on calcined muscovite with aramid fibres and glass cloth as carrier.  A modified silicon resin is used as binder.  POROBAND ® SI 0790 has excellent flexibility and shows no mica flaking during machine-taping.

Applications

POROBAND ® SI 0790 is used for the insulation of coils of traction machines with thermal classification 200 in VPI-technology, using solvent-free silicon resins.

Format
Rolls maximum width 1000 mm
Tapes from 10 mm width upward

Storability

Minimum 12 months at 20°C
Maximum 24 months at 5°C

 

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Description

Properties Test Method Unit Value
Nominal thickness IEC 60371-2 mm 0.12 ± 0.02
Total substance IEC 60371-2 g/m² 163 ± 16
Mica paper IEC 60371-2 g/m² 120 ± 10
Aramid fibre content (of mica paper)   % 5 ± 2
Glass cloth IEC 60371-2 g/m² 25 ± 2
Resin content IPV 18.5.3 g/m² 18± 4
Breakdown voltage IEC 60371-1 kV ≥2.5
Tensile strength IEC 60371-2 N/cm ≥80
Air resistance (Curley) ISO 3687 s ≤ 4000
IEC 60371-2 IEC 60371-2   up to 240