柱上 ちゅうじょう変圧 へんあつ ではありませんでした
chūjōhen atsukidewārimasendeshita

Noun
Desu Copula

The polite, past negative form of 柱上変圧器

1. Was not a pole-mounted transformer.

Past/Perfective
Negative
Polite
Formal Register