Improved magnet wire for inverter-fed motors

The inverter pulse resistant magnet wire, Thermaleze Q', was developed and introduced to the market in September 1995. Since then, laboratory accelerated motor tests as well as field tests have been performed in many different inverter-fed motor applications. It has been proved to be a greatly improved product for inverter-fed motor applications. However, an accelerated lab test on twisted pairs at elevated temperatures indicated that the current version of this wire has its limitations in high-temperature applications. Therefore, an improved version is being developed. The dielectric performance of this improved wire in comparison to current Quantumshield is presented and discussed in this paper.