通过光电感应开关实现两门互相联锁，自动开闭，为人（货）进出提供便利。

Two doors interlock each other though photoelectricity switch, automatically open and close, convenient for people (goods) to enter or exit.

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银川配电自动化项目涉及整个老城区的104台户外开关，10座开闭所，14台小区变与台变。

The Distribution Automation system of YinChuan involves 104 out-door switches, 10 switch stations, 14 section trans- formers and single transformers of the whole old city zone.

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其结构简单、操作方便、开关灵活、开闭安全、省时省力、生产效率高。

Its structure simple, the ease of operation, the switch nimble, the make and break safe, time-saving reduces effort, the production efficiency is high.

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