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Electric contact pressure gauge and frequency converter speed control circuit
Source: InternetPublisher:已注销 Updated: 2017/08/16
In the circuit shown in the figure, an electric contact pressure gauge and a frequency converter (Sanken 22kVA, Japan) are used to control the speed of the water pump to achieve constant pressure water supply. The power terminals R, S, and T of U can be connected to switches and AC contactors. The SP is installed on the main line close to the water pump outlet and is less affected by water consumption. Latest Control Circuits Circuits
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