NOMEX® TYPE 418 AND 419
NOMEX® Type 418 is designed for high-voltage applications, including motor conductor and coil wrap, transformer ground and layer insulation. It is a calendered product with high inherent dielectric strength (30 to 40 kV/mm), which can be readily impregnated with varnishes where this is desirable. NOMEX® Type 418 is available in 5 thicknesses, from 0.08 to 0.36 mm (3 to 14 mil). This calendered blend of aramid and mica offers increased voltage endurance over NOMEX® Type 410 when subjected to corona attack. NOMEX® Type 419 is the uncalendered precursor of NOMEX® Type 418, and is available in two thicknesses, 0.18 and 0.33 mm (7 and 13 mil). NOMEX® Type 419 is used in applications which take advantage of the lower density (0.5) which allows improved conformability and saturability
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Nomex® Type 926
DuPont™ Nomex® Type 926 is a strong, high-dielectric, thermally-stable paper that is specifically designed for use as conductor insulation in liquid-immersed transformers.
Type 926 is not appropriate for use as conductor insulation for dry type transformers. Initially, Type 926 is available only in a 0.05-mm (2-mil) thickness.
Mica Covered Conductor
Rectangular conductors for medium to high voltage motors are covered with polyester-backed mica paper impregnated with a low quantity of epoxy resin. The combination of mica and polyester film provides high breakdown voltage and good elasticity, in combination with good partial discharge, electrical creepage and radiation resistance. Multiple variations of build and lapping are possible with the use of sophisticated high-speed covering machines, and numerous variations of bonding and non-bonding conductor tape construction are used to suit customer specifications.
Inverter Grade Enamelled Wire
CORONA API (Polyamide-imide) 200°C
Corona API magnet wire is based on a dual coat polyesteramide-imide magnet wire enamel designed for high thermal class applications with excellent mechanical properties, chemical resistance, heat shock resistance and low co-efficient of friction.
Enamel configuration Dual coat system : base coat – THEIC polyesterimide top coat – Polyamide-imide Insulation class 200°C (min) Wire diameters 0.40 to 5.00 mm Covering grade 2 or 3 Standards IEC 317-13, 25, 26, 29, 38 Appearance Khaki coloured enamel wire