主机总电源开关不能启动：检查主令继电器是否损坏，过流继电器是否跳闸。
Total mainframe power switch could not be activated: check whether the Master relay is damaged, whether the flow relay tripped.
高/低压力开关保护、排气过高保护、热熔赛、压缩机热保护器，过流继电器、相序/缺相保护器等。
High / low pressure switch protection, protection, hot melt season, high exhaust heat protector for a compressor, overcurrent relay, phase sequence protector.
WJJL1智能过流继电器是典型的电子、电器技术相结合的产品。具有过电流、短路、缺相、过欠压、欠电流、相失衡及启动故障等保护功能。
WJJL1 intelligence over current relay is a typical electronic apparatus which has over current, short circuit, over voltage, under curent, phase faults and starting failure protective functions.
应用此继电器，结合常规的光纤纵差和过流保护，从而构成一个完备的保护方案。
To solve th is problem, the inter-block reverse overcurrent relay is proposed in this paper , which makes more substations′ connection possible.
应用此继电器，结合常规的光纤纵差和过流保护，从而构成一个完备的保护方案。
To solve th is problem, the inter-block reverse overcurrent relay is proposed in this paper , which makes more substations′ connection possible.
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