excess voltage preventer

例句：

1. 1. The excess voltage preventer is designed to protect the equipment from overvoltages.
   过电压保护器旨在保护设备免受过电压损害。
2. 2. During a power outage, it's essential to have an excess voltage preventer in place.
   在停电期间，安装过电压保护器至关重要。
3. 3. The engineers installed the excess voltage preventer at the substation to ensure safety during maintenance work.
   工程师们在变电站安装了过电压保护器，以确保维护工作时的安全。