Low or high pressure switch - turns off control circuit when water pressure drops below a set minimum, or above a set maximum.
低压或高压开关- - -用于当水压降低到预先设置的最低值或超过预先设置的最高值时，切断控制电流。
Though the range of water head is not too wide, maximum efficiency of Goupitan hydroelectric plant is very high and weighted efficiency focus on rated head wide range in flow.
尽管构皮滩电站的水头变幅并不大，但最高效率要求较高，而且设计水头附近横向权值大。
High anti-scale efficiency. The maximum allowable value of LSI index in original water is 2.8, and it can control inorganic scales effectively within this range.
阻垢效能高，原水lsi指数最大允许值为2.8，在此范围内可有效的控制无机物结垢。
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