Polyvinyl Acetal Film-Insulated Round Aluminum Magnet Wire is a type of magnet wire that consists of an aluminum core coated with a layer of polyvinyl acetal film as the insulation material.
Insulating Material:
The coating is based on a blend of polyvinyl acetal and phenolic resins .
NOTE—Polyvinyl acetal in this case refers to the condensation product of polyvinyl alcohol and an aldehyde and includes polyvinyl formal (Formvar).
Dimensions
| Insulation materials | Polyvinyl Acetal Film |
| Thermal Class | 105 |
| Dimensions | Single 8-24 AWG, Heavy 4-24 AWG |
| Insulation thickness | Single and Heavy |
| Certificate | UL |
Properties
| Adherence and flexibility | No cracks visible in the film coating |
| Minimum Percent Elongation | Not less than the value 28 -38 |
| Heat shock | No cracks visible in the film coating after conditioning at 175°C |
| Dielectric breakdown | 4-7.5 AWG:Heavy Build or Type 2: ：≥ 3500V – 3800V8-24 AWG: Single Build or Type 1：≥2710V – 3740V Heavy Build or Type 2：≥4870V – 6330V |
| Continuity | 14-24 AWG: max number of discontinuities Single Type 1: 500±5% – 750±5% Heavy Type 2: 1000±5% – 1500±5% |
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 |
| Scrape resistance | Lowest grams-to-fail load for any one of three tests, and the average of the three tests shall not be less than the values in Helical Coil Preparation and Bond Retention table |
| Toluene / ethanol compatibility | No swelling or blistering in the film coating |
| Transformer oil resistance | 4-24 AWG: No swelling or blistering in the film coating 4-7.5 AWG: a)Four dielectric breakdown values shall average not less than thevalues in 3500V – 3700V b)At least three of the five flexibility specimens shall show no cracks visible in the film coating c)Elongation specimens shall show no swelling or blistering in the filmcoating 8-24 AWG: a)Ten dielectric twisted pair breakdown values shall average not lessthan the values in Single Type 1: 2710V – 3740V Heavy Type 2: 4870V – 7000V b)At least three of the five flexibility specimens shall show no cracks visible in the film coating c)Elongation specimens shall show no swelling or blistering in the filmcoating |