Insulating coating for transformer wires

Details Insulating coating for transformer wires Insulating coating for transformer wires

1978-03-24

1980-07-29

Lesmes, George F.

Stock material or miscellaneous articles

Coated or structually defined flake, particle, cell, strand,...

Rod, strand, filament or fiber

427116, 427117, 427120, 427379, 428379, 174120SR, 525187, B32B 1502

Patent

active

042151740

ABSTRACT:
Improved three component insulating coatings for both wet solvent and dry electrostatic application to transformer wires contain an increased epoxy resin concentration and a decreased amount of polyvinyl acetal and phenol aldehyde resins. The increased epoxy content gives substantially improved coatings with no adverse dissipation and hydrolytic effects. The epoxy constituent can range from 30-60 percent by weight providing the ratio of the polyvinyl acetal to phenol aldehyde is kept within the range of from 1 to 1 to 2 to 1.

REFERENCES:
patent: Re25625 (1964-07-01), Been
patent: 3239598 (1966-03-01), Olson et al.

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