Performance characteristics:
Good insulation performance: With excellent insulation performance and stability, it can effectively prevent breakdown and insulation failure, and can be widely used for interlayer insulation in high-voltage equipment such as transformers and motors.
Beneficial for heat dissipation and insulation material immersion: The adhesive resin layer is uniformly distributed in a diamond grid shape, and the gaps without coating are channel shaped in application, which is conducive to the discharge and cooling of air between insulation materials, as well as the immersion of liquid or gas insulation materials, reducing corona damage and local discharge damage to a minimum.
Excellent adhesion performance: During the drying process of the coil, the coating layer begins to melt at a certain temperature, producing adhesion. As the temperature increases, it begins to solidify again, reliably bonding adjacent layers of the winding into a fixed unit. This can prevent displacement of the winding layers during short circuits and ensure the long-term mechanical and physical properties of the insulation structure.
Diamond Dotted PET Film
Main Parameters:
Insulation class:E Class (120℃)
Width: 1010mm
Thickness:0.025mm-0.35mm
Can be customized
Diamond dotted polyester film is the insulation material made by coating special modified epoxy resin on the electrical polyester film,and baked it to semi-cured state.
Diamond Dotted PET Film
Diamond dotted polyester film is the insulation material made by coating special modified epoxy resin on the electrical polyester film,and baked it to semi-cured state.
For the resin coating layer on the film is points but not a whole,the air and liquid can easy circulate in the passages between the resin coating,and this will minimize the damage of corona and partial discharge.
Diamond dotted polyester film can be used as layer insulation material in the insulation system of air or oil,and it mainly used as layer insulation or turn-to-turn insulation of six sulfur hexafluoride mutual inductor and transformer.
Main features of the Diamond Dotted Film
—Insulation class:E Class (120℃)
—Width: 1010mm
—Thickness:0.025mm-0.35mm
—Can be customized
—The diamond dotted paper has been approved by UL (NO.: E310670) ,ROHS and REACH test.
| Item | Unit | Value | ||
| Base material thickness | mm | 0.05 | 0.075 | 0.10 |
| Thickness tolerance | mm | ±0.0 05 | ||
| Tensile strength | Mpa | ≥150 | ||
| Single resin thickness | um | 10～20 | ||
| Shrinkage | % | ≤1.5 | ||
| Power frequency breakdown voltage | V | ≥ 6000 | ≥ 7000 | ≥ 8000 |
| Bonding strength (bonding shear strength with copper plate) |
Mpa | ≥0.6 | ||
| Long-term heat resistance | ℃ | ≥130 | ||
| Storage | Store in a dry, clean and ventilated environment below 40 ℃. It is not allowed to be close to fire sources or heating, and protected from direct sunlight. The storage period is 10 months. The over storage period can be used after passing the inspection. | |||
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Suitable for interlayer insulation in gas or oil insulation systems of dry-type transformers, it can also be used for insulation of high current and voltage transformers, copper (aluminum) foil wrapped and lined insulation of low voltage coils, as well as insulation of B and F level motors, electrical troughs, and inter turn insulation. It is also widely used in aerospace, automotive, electronic and electrical fields.
