The onsite electric power system consists of the main generator, the unit station transformers, the common station service transformer, the diesel generators and the electric distribution system.

厂内配电系统由主发电机，主变压器，厂用变压器，柴油发电机和相关的配电设备组成。

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It elaborates over the method and the reasons to choose the regular emergency power facilities-self-provided diesel generator unit, uninterrupted power source (UPS) and emergency power source (EPS).

对常用的应急电源装置：自备柴油发电机组、不间断电源装置UPS和应急电源装置EPS容量选择的方法、依据进行了论述。

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