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Epiform F-6845ES is a black, Class F-rated insulating epoxy coating powder, designed for the slot insulation of motor armatures. It works very well for both AC and DC electric motors, as well as for motor stators. The coating provides good heat resistance, high edge coverage, and high impact strength. It is also designed for high throughput of electrostatic fluidized bed equipment and as such as a very fast curing speed during induction cure. Before cure, it boasts a long shelf life at 10°C and once cured offers superior heat resistance and dielectric strength and it is qualified for UL EIS 1446 155°C (Class F) rating.
Epiform F-6845ES is designed specifically for use in Electrostatic Fluidized Bed and automatic electrostatic coating lines such as Braun Sondermaschinen and Nide Equipment. It is available as in black but can be made in other colors if it is needed or required by the motor manufacturer.
Better edge coverage ensures that there is enough material at the hardest to coat parts of the armature. This is important in order to prevent shorting.
Good dielectric strength ensures that the copper wire is fully insulated from the motor armature stack. A higher dielectric strength allows the material to achieve the same breakdown voltage with less material, translating in a material cost savings.