supplementary power supply set
... 事故电源装置 emergency source unit 附加电源装置 supplementary power supply set 启动电源装置 start power unit ...
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该装置在总馈电开关处的漏电保护装置使用附加直流电源原理,在分支馈电开关处的漏电保护装置使用零序功率方向式保护原理。
This device use the principle of additional DC power supply in main feeding switch, and use the principle of direction of zero sequence power in branch feeding switch.
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