overhead proofer

例句：

1. 1. The overhead proofer is used to ensure that the electrical system can handle the load without overheating.
   过载保护器用于确保电气系统在负载下不会过热。
2. 2.The engineers used the overhead proofer to test the new circuit breakers before they were installed.
   工程师使用过载保护器来测试新断路器，以确保它们安装前能够正常工作。
3. 3.During a power outage, the overhead proofer detects any potential overload and automatically shuts down the system to prevent damage.
   在停电期间，过载保护器检测到潜在的过载情况，并自动关闭系统以防止损坏。