noun
power failure; mechanical breakdown
Refers to a failure or malfunction in a power system or machinery, often in technical or industrial contexts.
エレベーターが動力故障で止まった。
The elevator stopped due to a power failure.
動力故障の原因を調査中です。
We are investigating the cause of the power failure.
Compound of 動力 (power, motive force) and 故障 (breakdown, failure).