1.Product introduction
The insulation of 6521 polyester film insulating paper is a two-layer electrical insulation composite material, which is made up of 100% sulfate wood pulp fiber insulating paper and 6020 high temperature resistant electrical insulating polyester film.
2.Product characteristics
6520 polyester film insulating paper has higher mechanical strength and better dielectric properties.
3.Product usage
6520 polyester film insulating paper is used for slot insulation, cushion insulation and turn-to-turn insulation in stator windings of motor and electrical appliances. At the same time, it is also applied to interlayer insulation, end seal insulation and liner insulation of dry-type transformer.
Serial number | Index name | Unit | Index value |
1 | Standard thickness | mm | 0.15 | 0.17 | 0.20 | 0.25 | 0.30 |
2 | Allowable thickness deviation | mm | ±0.0020 | ±0.0020 | ±0.030 | ±0.030 | ±0.030 |
3 | Nominal quantitation and allowable deviation | g/m² | 190±27 | 215±32 | 250±38 | 310±46 | 370±55 |
4 | Film standard thickness | um | 25 | 25 | 25 | 25 | 25 |
5 | tensile strength | Longitudinal | Unbending | N/10mm | ≥135 | ≥150 | ≥180 | ≥210 | ≥270 |
After bending | ≥80 | ≥90 | ≥100 | ≥120 | ≥160 |
Transverse | Unbending | ≥80 | ≥90 | ≥100 | ≥120 | ≥150 |
After bending | ≥60 | ≥60 | ≥70 | ≥80 | ≥100 |
6 | breakdown voltage, unbending | Unbending | KV | ≥6.0 |
After bending | ≥5.0 |
7 | Normal caking property | Non stratification |
8 | Hot caking property | 130±2℃ 10min no bubble, no glue |
