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US 12,331,154 B2Granted
Curable resin and method and system for insulating electrical items therewith
AssigneeAEV Holdings Limited
InventorAmedeo Ceresa
Life of this patent
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Abstract
A latent curable, single component, epoxy resin with a viscosity at 25° C. of between 50 and 100 poise may include, by weight: i) 60-90% of epichlorohydrin and bisphenol F; ii) 10-40% of epichlorohydrin and bisphenol A; and iii) 2-10% of a reactive catalyst, which is an encapsulated aliphatic polyamine, which cures above 80° C.
Claims27
A system for producing an item of electrical equipment, comprising:
- i) a first heating chamber for pre-heating the item;
- ii) a tank for a resin;
- iii) an impregnation chamber, wherein the impregnation chamber comprises a centrifuge connected to the resin tank via connecting tubes, and wherein the centrifuge includes a rotor disposed within the impregnation chamber that holds the item suspended in an upright position along a rotor axis;
- iv) a first vacuum pump operatively connected to the impregnation chamber;
- v) a second heating chamber for gelling the resin impregnated item by heating through magnetic induction;
- vi) one or more curing ovens that heat the resin impregnated item, in a stepped manner, to a temperature of about 165° C. to 200° C.;
- and
- vii) a cooling chamber where the item is cooled.
5 more elements
Dependencies are inferred from the claim text.