停電 ていでん電源 でんげん装置 そうちじゃなかったです
muteidendengensōchijanakattadesu

Noun
Desu Copula

The polite, past negative form of 無停電電源装置

1. It wasn't an uninterruptible power supply.; It wasn't a UPS.

Past/Perfective
Negative
Polite
Casual Register