noun
power flicker; momentary power interruption
Technical term used in electrical engineering and power supply contexts. Refers to a very brief loss of electricity, shorter than a full blackout.
瞬間電断が発生すると、精密機器が誤動作することがある。
When a power flicker occurs, precision equipment may malfunction.
この地域では落雷による瞬間電断が頻発している。
In this area, power flickers caused by lightning strikes occur frequently.
Compound of 瞬間 (moment) + 電断 (power interruption). 電断 is itself a compound of 電 (electricity) and 断 (cut off).