POROBAND ® 2734 consists of absorbent mica paper and a glass cloth as carrier. The mica paper in addition is covered with a thin PET-fleece. POROBAND ® 2734 is a flexible tape, suitable for hand and machine taping. The PET-fleece backer prevents splitting of mica particles during taping process and contributes to rapid impregnation. The mechanical and electrical properties of the final insulation are destined mainly by the used impregnating resin. POROBAND ® 2734 is compatible with solventless epoxy- and polyester resins.
POROBAND ® 2734 is used in VPI-systems for the insulation of coils and bars of low and high voltage machines.
| Format | |
|---|---|
| Rolls | maximum width 1000 mm |
| Tapes | from 10 mm width upward |
Minimum 12 months at 20 °C
Minimum 24 months at 5 °C
| Properties | Test Method | Unit | Value | Value | Value |
|---|---|---|---|---|---|
| Nominal thickness | IEC 60371 | mm | 0.14 ± 0.02 | 0.17 ± 0.02 | 0.19 ± 0.02 |
| Total substance | IEC 60371 | g/m² | 156 ± 114 | 202 ± 19 | 250 ± 20 |
| Glass cloth | IEC 60371 | g/m² | 24 ± 1 | 24 ± 1 | 24 ± 1 |
| Mica paper (uncalcined) | IEC 60371 | g/m² | 80 ± 7 | 120 ± 10 | 160 ± 15 |
| PET-fleece | IEC 60371 | g/m² | 28 ± 3 | 28 ± 3 | 28 ± 3 |
| Resin content | IEC 60371 | g/m² | 24 ± 5 | 30 ± 5 | 38 ± 8 |
| Tensile strength | IEC 60371 | N/cm | ≥90 | ≥90 | ≥90 |
| Thermal class | IEC 60216 | °C | 155 (F) | 155 (F) | 155 (F) |
