Translation guide
UPS refers to an uninterruptible power supply, a device that provides backup power when the main power fails. In Japanese, it is commonly referred to by the acronym UPS or the full term.
The device that provides emergency power to a load when the input power source fails.
The acronym UPS is widely used in Japanese, pronounced ユーピーエス. It is the most common way to refer to an uninterruptible power supply in both technical and general contexts.
UPSを設置しました。
I installed a UPS.
This is the full Japanese term for UPS, literally 'uninterruptible power supply device'. It is used in formal or technical documentation.
無停電電源装置が必要です。
An uninterruptible power supply is necessary.