絶縁 ぜつえん抵抗 ていこうじゃなかったです
zetsuente ikōjanakattadesu

Noun
Desu Copula

The polite, past negative form of 絶縁抵抗

1. Wasn't insulation resistance.; Wasn't an insulating resistance.

Past/Perfective
Negative
Polite
Casual Register