fail-safe transformer

例句：

1. 1. The engineer designed a fail-safe transformer to prevent power outages during emergencies.
   这位工程师设计了一个安全失败转换器，以防在紧急情况下发生电力中断。
2. 2.The new safety switch has been installed in the factory's main control room, ensuring that the system remains fail-safe.
   新安装的安全开关已安装在工厂的主要控制室，确保系统始终保持安全。
3. 3. In case of an emergency, the fail-safe transformer automatically switches off the main powersupply to prevent further damage.
   在紧急情况下，安全失败转换器会自动关闭主电源供应，以防止进一步损坏。