ちょう高圧 こうあつ送電 そうでんじゃなかったです
chōkōatsusōdenjanakattadesu

Noun
Desu Copula

The polite, past negative form of 超高圧送電

1. Wasn't ultra-high voltage transmission.; Wasn't high-voltage power transmission.

Past/Perfective
Negative
Polite
Casual Register