The power supply on this instrument had failed, so it could no longer be used.

这个仪器的电源出故障了，不能再用了。

youdao

The first attempt to accelerate each of two opposing beams of protons to 3.5 TeV apiece failed when a power supply shut down inadvertently and a new magnet-protection system tripped, dumping the beam.

第一次尝试把两个加快的对立的质子束各以3.5兆电子伏特的电压加速时，遭到了失败。只是无意中关闭电源和一个新的磁保护系统跳闸，倾翻了质子束。

youdao

The power supply failed without warning.

电力无预警地停了。

youdao

Power and water supply failed in some areas.

CNN: Philippines flood survivors count blessings

One of Jersey's two power supply cables from France, Normandie 1, failed in June, after which engineers said it was beyond repair.

BBC: Electricity prices in Jersey to rise by 9.5% next year