POLYESTER GLASS is specifically, cured unsaturated polyester resin in a non-woven glass mat, containing aluminium trihydrate, less than 2% organic peroxides and metallic stearates.
Available in sheet format this material is exclusively a low voltage electrical insulator although it has been used as a low cost non-metallic substitute for jigs and fixtures.
This material is classified under NEMA specifications as Type GPO-1, 2 or 3.
Polyester glass can be characterised by the following properties:
- Low cost
- Low temperature properties
- Low electrical insulation value
- Good punching grade
Fields of application: slip ring bodies, busbar supports, low temperature electrical insulators and terminal boards.