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Special AC Drive for Constant Pressure Water Supply Systems – supplier

07 Jan 2026
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Special AC Drive for Constant Pressure Water Supply SystemSpecial Ac drive for constant pressure water supply system Features:Special for constant pressure water supply systemPlastic caseBuild-in more than 10 years' water treatment experiencesInstalled on the pump directly Modbus communication for master-slave pumps1AC 220V, 0.4~2.2kW3AC 220V, 0.4~4kW3AC 380V, 0.75~7.5kWFully automatic operating Infineon IGBT insideEasy installtion, easy commissioningHigh control accuracyTotal failure ratio <0.5%Robust design Very less wiring connectionPressure controlled stablySpecifications

Item	Technical Index	Specification
Input	input voltage	1AC/3AC 220~240V±15%, 3AC 380~460V±15%
Input	Input frequency	50 / 60Hz±5%
Output	Output voltage	0~rated input voltage
Output	Output frequency	0~6000Hz
Control Features	Control mode	Manual control Auto control
	Operation command mode	Keypad control Terminal control Serial communication control (Modbus)
	Overload capacity	150% / 60s, 180% / 10s, 200% / 1s.
	PID control	Built-in PID control standardly.
	Automatic voltage regulation	Keep output voltage constant automatically when input voltage fluctuating
Main Protection Functions	Pressure	Upper limit protection Lower limit protection
	Lack of water	Lack of water protection
	Motor	Motor overload protection
	Rust-proof & freeze-proof	Rust-proof and freeze-proof protection
	Pipeline	Pipeline broken protection
Applications	Water supply system	Deep well pump, submersible pump, sewerage pump, pipeline pump, booster pump, multistage pump, centrifugal pump etc. Special for living water supply system, hot water supply system, high-rise water supply system, fire fighting water supply system, sewer system and irrigation system etc.
Human machine interface	LED display	Pressure setting, system pressure, output frequency, output voltage, output current, etc. Two lines display.
Environment	Ambient temperature	-10~50°C, without direct sunshine.
	Humidity	90%RH or less (non-condensing).
	Altitude	≤1000M: output rated power, >1000M: output derated
	Storage temperature	-20~60°C

Feature

	Easy installation
1	Mounted on the pump directly, without additionla cabinet.
2	Modbus communication, very less wiring connection.
3	Multiple pumps system, only one pressure sensor is necessary.
	Easy operation
1	Few parameters setting.
2	Press-to-go, fully automatic running.
3	Pressure setting can be changed easily.
	Smart master-slave control
1	Mater inverter and slave inverter can be operated alternately, prolong the pump's life time.
2	Pumps are switched smoothly, no pressure vibration.
3	Pumps are increased / decreased automatically, alwasy keep constant pressure.