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HD31 Multi-pump Water Supply Special Inverter
HD31 is a product specially developed for multi-pump water supply industry based on HD30 vector control inverter. Three-phase 380-460V, 5.5-132kW can be used in municipal water supply, sewage treatment, agricultural irrigation, etc.
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Timed segmented constant pressure water supply

A maximum of 12 timing sections can be set to adjust the pressure of the pipe network to achieve a timing and constܫant pressure control of water supply.


Power frequency/variable frequency pump timing rotation control

It can realize the timing🤡 rotation of power frequency pump or variable frequency pump.


One drag for more water supply

Up to 7 water pumps can be controlled.


Two energy-saving sleep modes

More energy-saving options.


Perfect detection function

Water level detection, pipe network pressure detect꧃i🃏on.


Automatic elimination of faulty pumps

It can automatically eliminate the faulty variable frequency pump in the system an♑d start the next pump at th𝕴e same time.

Pump starting principle: first variab꧟le frequency, then power frequency.


Smooth pump switching function

Ensure the pressure of pipe network is stable.

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