自動 じどう電圧 でんあつ切替 きりかえじゃなかったです
jidōden'atsukirikaejanakattadesu

Noun
Desu Copula

The polite, past negative form of 自動電圧切替

1. Wasn't automatic voltage switching.; Wasn't switching automatically.

Past/Perfective
Negative
Polite
Casual Register
Computing