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。
Low or high pressure switch - turns off control circuit when water pressure drops below a set minimum, or above a set maximum.
用PC或者可编程器件取代信号发生器提供控制信号，可以实现高压固体开关的程控功能。
Using PC or programmable devices instead of the signal generator, a high voltage solid state switch controlled by programmes will come into true.
智能型保护装置是高压开关的中枢控制部件。
Intelligent protection equipment is the central control unit of high switch.
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