Description
在机组启动时通过启／备变向厂用负荷供电；在机组正常用电时，由厂变供电并经低压厂变向400VMCC低压负荷供电以启动机组所必需的辅机；在厂用电消失时，为了保护设备和系统的安全，厂用电快切装置应快速将厂用工作负荷自动切换至启／备变；当确认保安段母线失压后，应启动事故备用柴油机供电以保证设备安全。
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