モータレット試料の繰り返し部分放電開始電圧の温度依存性の検討

抄録

Recently, driving of inverters has been advanced to improve the characteristics of motors. The problem of insulation deterioration from inverter surge is particularly serious in high-voltage motors where insulation structure is important, and analysis of phenomena of deterioration is desired. This paper deals with RPDIV of a motorette that can simulate some connections in the motor and investigates the influence of temperature on RPDIV characteristics. Measurements of RPDIV of the motorette with varnish treatment were also made in the temperature range between 25 ℃ and 155 ℃.