Product Description
Epoxylite® 578EB is a Class 180° C epoxy resin system designed for the Impregnation of both random and form wound machines, and is suitable for use on windings rated up to and including 3.3 kV.
For 6.6kV machines, specific insulation structures should be used to optimise impregnation. Epoxylite® 578EB has excellent tank stability and a relatively short cure cycle. The resin’s ability to give both good penetration and high film build means that excellent environmental and chemical protection can be obtained with a single application. This makes the resin ideally suited for both OEM and Electrical Repair Shop use.
Applications of Epoxylite® 578EB
Epoxylite® 578EB is designed to be applied by a Vacuum Pressure Impregnation process
Processing of Epoxylite® 578EB
Various VPI (Vacuum Pressure Impregnation) processes can be performed using Epoxylite® 578EB. Below are some examples:
Random Wound Machines: A dry vacuum level of at least 1-2 mbar is recommended for about 15-30 minutes before introducing the resin into the vacuum vessel. Afterward, maintain the same “wet” vacuum level for 10-15 minutes before applying a pressure of 60-70 psi for an additional 15-30 minutes.
Form Wound Stators and Armatures (up to 3.3 kV): A vacuum level of 0.5 mbar or better should be maintained for a minimum of 60 minutes before introducing the resin into the vacuum vessel.
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Typical properties
