Polyvinyl Acetal Film-Insulated Square Aluminum Magnet Wire is a special type of magnet wire, which is mainly characterized by its good oil resistance and hydrolysis resistance, making it widely used in the manufacturing of oil-immersed transformer windings.
Insulation materials
The conductor part of the Formvar enameled wire is usually pure aluminum metal, that has been annealed, and the surface is covered with an insulating film, which is typically made of polymer materials like polyvinyl formal (PVAl).
Specifications
Insulation materials
Polyvinyl Acetal
Thermal Class
105
Bare Wire Dimensions
Awg 1/0 – Awg14
Certificate
UL
Standard
MW-18-A
Heavy and Quad Film-Insulated Square Magnet Wire Increase in Dimensions Due to Film Coating
No cracks visible in the film coating after conditioning at 175°C
Periodic conformance tests
Solubility
Specimens immersed in xylene shall not soften sufficiently to expose the bare conductor
Dielectric breakdown rated temperature
Average not less than 75% of the value required at room temperature, when tested on MW 15-A Heavy Build
Toluene / ethanol compatibility
No swelling or blistering in the film coating
Transformer oil resistance
No swelling or blistering in the film coatinga)Dielectric breakdown values shall average not less than the values in Table 36b)At least three of the five flexibility specimens shall show no cracks visible in the film coatingb) Elongation specimens shall show no swelling or blistering in the film coating
Send Message
Get a tailored quote—fill out the request form and enjoy exclusive discounts!