絶縁 ぜつえん抵抗 ていこうじゃありませんでした
zetsuente ikōja arimasendeshita

Noun
Desu Copula

The polite, past negative form of 絶縁抵抗

1. Was not insulation resistance.; Was not insulating resistance.

Past/Perfective
Negative
Polite
Terminal Form