保安电源（Emergency power supply）为避免全厂事故停电时造成机组失控、损坏设备、影响电厂长期不能恢复供电而设置的向事故保安负荷供电的电源。
交流事故保安电源系统是当电网发生事故或其他原因致使火电厂厂用电长时间停电时，提供机组安全停机所必需的交流用电系统。
AC fault security power source system is to provide alternating current for unit safety shutdown when power cut happens for a long time due to power grid failure or other reasons.
实验室应建立安全值班制度，值班人员应负责锁门、检查电源、水管、门窗等，以确保安全。
The lab must work out the principle of duty, the watch must check up the power, the water pipe, the window and the door to make sure the lab is safe.
简化了外部电源供应故障维修事件中的权力和紧凑的设计节省了空间，并确保安静运行。
The external power supply simplifies maintenance in the event of a power supply failure and its compact design saves space and ensures silent operation.
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