Products Feature

This variable frequency drive inverter is used especially for water pump, it adopts the industry leading technique SPWM and pressure transmission technique, detects actual pipeline pressure change and controls the rotation speed of the pump.
The operation of this device is very easy, all functions can be finished by parameters setting, no need any professional staffs to debug.
This VFD inverter is high-efficient, it can save water and electricity up to 20%~60% compared to traditional water supply system.
Soft starting and stopping, constant water pressure prolong the service life of the pipe Network and make the water usage comfortable and enjoyable.
The range voltage is wild, it can work stably in areas with large voltage fluctuation.
The installation is very easy with direct screw thread, it can be used different kinds of water pumps and thus reduce extra costs.
LED display makes it convenient and fast to check and set actual pressure values.

Technical Specifications

Model	Power	Size	Rated Current	Input Voltage	Output Voltage	Category	Input Frequency	Output Frequency	Mobile Phone APP Control Function (Customized)	Pressure Sensor
VFA-20M	0.37KW	186154116mm	4.8A	1×110V	1×110V	Single-phase in and Single-phase Out	50/60Hz	20-50/60Hz	Extra Charge	4-20mA +24V 10bar
	0.55KW	210173124mm	7A
	0.75KW	210173124mm	9.6A
	1.1KW	210173124mm	11.5A
VFA-20S	0.37KW	186154116mm	3.4A	1×110V	3×110V（△）	Single-phase in and Three-phase Out
	0.55KW	186154116mm	5A
	0.75KW	210173124mm	6.8A
	1.1KW	210173124mm	9.6A

Applicable Areas

Tap water booster system
Household and residential water supply system
Swimming pool water supply system
Commercial water supply system
Factory dormitory water supply system
Industrial water circulation system
Cooling water systems
Cold water circulation system

Technical Parameters

No.	Product Specification	0.75KW	1.1KW	1.5KW	2.2KW	4.0KW	7.5KW
1	Input Power	Single-phase AC Power supply or three-phase AC power supply				Three-phase AC power supply
2	Input Voltage	110VAC or 220VAC or 380VAC				380VAC
3	Allowed Voltage Fluctuation	80V~140V(110V) OR 160V~260V(220V) or 320V~450V(380v)
4	Input Frequency	50/60Hz
5	Output Voltage	110VAC or 220VAC or 380VAC
6	Load Type	Pump
7	Output Frequency Range	20-50/60Hz
8	Pressure Sensor	24V, 4-20mA(10bar, 16bar, 25bar)
9	Pressure Setting Range	0.5~9.0bar
10	Pressure Tank Setting Requirements	Required not less than 2 liters inflatable pressure water tank(Preset pressure=60% of the setting pressure)
11	Temperature Range	0~+40℃
12	Medium	Clean water within the temperature range of 0~+100℃
13	Required Pressure When Self-starting	When the factory setting pressure is less than 0.3 bar
14	Installation	Make sure the grounding is appropriate and reliable before using.

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FAQ

Q: Are you manufacturer or trading company?
A: We are professional manufacturer of VFD inverters, variable frequency drive water pumps, automatic pressure switches with CE and ISO9001 certifications. We provide high quality products with high competitive factory price.

Q: What's your quality control system?
A: We have strict quality control system from raw material procurement, production to product testing, every product is done fatigue testing, calibration, temperature compensation before shipment. High quality is guaranteed.

Q: Is there MOQ with your product?
A: If OEM services needed, the minimum order quantity is 300 PCS for each model in one order. If customization of colors needed, the MOQ is 500 PCS for each model in one order.

Q: Can you provide samples for testing?
A: Customers should pay samples and shipping costs. Sample cost can be applied for exemption in the formal order. Lead time of samples is 7days.

Q: What is the warranty of your products? And after-sales service?
A: Our warranty time is 12 months after shipment, and our after-sales department will respond to your questions in 24hrs, remote instruction by PC network is always available and we provide lifetime maintenance.

Q: What is lead time of your product?
A: We are factory, our lead time is about 20-45 working days.

Q: Can you provide packing details for this product?

A: For inverters power below 2.2KW, there are 6PCS in a CTN; for 4KW and 7.5KW inverters, there are 4PCS in a CTN

Q: Can the input frequency of inverter be 50HZ and output frequency be 60HZ?

A: The input frequency and the output frequency are the same, if the input frequency is 50HZ, the output frequency is 50HZ.

Q: What material is the shell of the regular knapsack inverter?

A: The base is aluminum alloy and the panel is plastic.

Q: What is the difference of speed between the 50HZ and 60HZ of the inverter?

A: When the inverter is 50HZ, the theoretical pump speed is 3000 rpm, and the actual is 2850 rpm; when the inverter is 60HZ, the theoretical pump speed is 3600 rpm, and the actual pump speed is 3450 rpm; the frequency is only related to the pump, not to the inverter.

Q: Can you customize inverters for swimming pool pumps?

A: We can customize the inverter for swimming pool pumps, but the inverter of the swimming pool pump displays the rotation speed. Our normal inverter displays the frequency. For specific cooperation details, please contact our colleagues in charge of overseas business.

Q: Does your inverter have RS485 function?

A: We have mass-produced inverters for water pumps with RS485 function, and Modbus protocol can be provided during the cooperation process.

Q: Does your inverter or water pump controller have EMC certification?

A: Yes, when we make TUV or CE certification, EMC certification has been included.

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