STATIONARY INDUCTION ELECTRIC DEVICE WITH ON-LOAD TAP-CHANGING TRANSFORMER

摘要

A stationary induction electric apparatus with an on-load tap-changing transformer is provided to satisfy insulation property and arc resistance required in a conversion shutter part and insulation property and sliding property required in a selector part. A stationary induction electric apparatus comprises a tank(1), an electronic induction device and an on-load tap converter(16). The electronic induction device is accepted in the tank with liquid insulator having a flash point over 250°C. The on-load tap converter adjusts the voltage of the electronic induction device. The on-load tap converter comprises a conversion shutter part(17) and a tab selector part(18). The conversion shutter part is a vacuum switch. Silicon solution containing synthesis polyester is used in the selector part as an insulation medium.