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Hangzhou Ruifeng Environmental Protection Technology Co., Ltd. is a diversified high-tech enterprise integrating research and development, manufacturing, sales and service. The company's main sewage pump, integrated prefabricated pump station, integrated sewage treatment equipment, catering oil and water separation equipment and integrated sewage upgrading equipment.

Why Choose Us

Quality Control

We strictly follow the ISO 9001 series of standards for quality control to ensure that all products undergo comprehensive performance tests before leaving the factory to ensure the reliability of product quality.

Production Capacity

The company has strong production capacity, with more than 100 employees, a plant area of 5,000 square meters, and equipped with various heavy and precision processing equipment to meet diverse production needs.

OEM and ODM Services

For OEM and ODM business, when you put forward specific requirements, our professional team of engineers will quickly provide you with customized solutions. We not only provide a wide range of products, but also provide comprehensive technical support according to your actual needs to ensure that you choose the most suitable products for you.

Patent Certificate

We have obtained Environmental management system certification, quality management system certification, occupational health and safety management system certification, design patent certificate, utility model patent certificate, etc.

Our Best-Selling Controllers

Submersible Pump Controller
Submersible Pump Controller is an important equipment for controlling submersible pumps, which monitors and regulates the operation of submersible pumps electronically or mechanically to ensure the safe and efficient operation of submersible pumps.

Frequency Conversion Water Supply Control Cabinet
Frequency conversion constant pressure control cabinet adopts AC frequency governor to adjust the rotational speed of the motor of the pump according to different requirements to change the operating conditions of the pump (flow rate, head) to meet the user's requirements, according to different control requirements, the control equipment can be pressure, level, temperature and other parameters as the control target, stepless speed regulation of water pumps.

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Submersible Pump Controller Specification

Control Box Amp Ratings	40, 41, 42, 43, 44, 45
Control Box Voltage	230 Volt (3-Phase)
Number Of Pumps Controlled	1
Control Box Operations	On, Off
Pump's Voltage (@ Control Box Use)	230
Control Box Internal Thermal Overload Protection	Yes
Control Box Voltage Overload Protection	Electronic
Circuit Breaker Protection	40.2~45.5 Amps, Running Amps 43.0, Heater Size K74
Power Spike Control	Yes
Watertight Outer Housing	Yes
Watertight Float Switch Cable Outlets	Yes

Submersible Pump Controller Applications

● Residential applications

● Agricultural applications

● Commercial applications

● Industrial applications

Functions of Submersible Pump Controllers

Automatic start/stop: One of the primary functions of submersible pump controllers is to control the start and stop of the pump based on the water level or pressure in the system. This ensures that the pump operates only when needed, conserving energy and reducing wear and tear on the pump.

Overload protection: These controllers are designed to protect the pump from damage due to overloading. If the pump is subjected to excessive current, the controller will automatically shut down the pump, preventing potential damage to the motor and other components.

Dry run protection: Submersible pump controllers also provide dry run protection. If the pump is running without water, the controller will detect this condition and stop the pump to prevent damage to the motor and other components.

Overheat protection: These controllers are equipped with temperature sensors that monitor the temperature of the pump motor. If the temperature exceeds a predetermined threshold, the controller will shut down the pump to prevent overheating and potential damage.

Fault detection: Submersible pump controllers are designed to detect and diagnose various faults in the system, such as short circuits, open circuits, and ground faults. This allows for timely intervention and maintenance, ensuring the reliability of the pump system.

Customized Frequency Conversion Water Supply Control Cabinet

Requirement Analysis

At the onset of the customization process, our sales engineers engage in thorough discussions with customers to comprehend their specific needs. This includes, but is not limited to:
● Application Scenarios: Such as industrial automation, HVAC, water treatment, etc.
● Technical Parameters: Required power, voltage level, control mode, etc., of the frequency converter.
● Environmental Factors: The environment in which the frequency conversion water supply control cabinet will be installed, including temperature, humidity, dust, etc.
● Special Requirements: Such as explosion-proof, waterproof, corrosion-resistant, and other special design requirements.

Scheme Design

Based on the requirement analysis, we design the electrical schematic and layout diagram of the frequency converter cabinet. The design plan typically includes:
● Selection of Frequency Converter: Choosing the appropriate frequency converter based on power and control requirements.
● Electrical Component Configuration: Including contactors, circuit breakers, relays, reactors, etc.
● Cooling System Design: Designing fans, heat sinks, or air conditioning systems based on heat dissipation requirements.
● Safety Protection Measures: Designing overload, overheating, short circuit, and other protection functions.

Frequency Conversion Water Supply Control Cabinet Technical Specifications

Input	Input voltage	lΦAC220V±15% 3ΦAC380V± 15%
	Input frequency	47-63Hz
	Efficiency	≥97%
Output	Output voltage	0- Rated voltage
Output	Output frequency	0-500Hz
Control Features	Control Mode	Speed sensorless vector control,Vector control with speed sensor,V/F control
	Run Command Mode	Panel control, terminal control, serial communication
	Frequency setting method	Digital setting, analog quantity setting, pulse frequency setting, serial communication setting, multi segment speed setting and simple PLC setting, PID setting, etc., can achieve combination and mode switching of given methods
	Overload capacity	G type: 150% rated current 60S, 180% rated current 10S
	Overload capacity	P type: 120% rated current 60S, 150% rated current 10S
	Starting torque	0.5Hz/180% (SVC) ；1Hz/180% (V/F)
	Speed regulation range	1：100 (SVC)
	Speed control accuracy	± 0.5% maximum speed (SVC)
	Carrier wave frequency	1.0-15.0KHz,Automatically adjustable according to temperature and load characteristics
	Frequency resolution	Digital setting: 0.01Hz Analog setting: Maximum frequency * 0.1%
	Torque increase	Automatic torque increase; Manual torque increase by 0.1% -10.0%
	Acceleration and deceleration Methods	DC, four types of acceleration and deceleration times
	DC braking	DC braking during startup and DC braking during shutdown
	Inching operation	Inching operation frequency: 0.0Hz - maximum frequency output, inching plus or minus time 0.1-3600.0S
	Simple PLC and multi speed Operation	Up to 16 segments of speed operation can be achieved through built-in PLC or control terminals
	Built in process PID	A closed-loop control system that facilitates the implementation of process quantities such as pressure, temperature, flow rate, etc
	Automatic voltage adjustment	When the voltage of the power grid changes, it can automatically maintain a constant output voltage
Control Function	Common DC bus	Multiple frequency converters share a DC bus for automatic energy balancing
	Torque control	No PG torque control
	Swing frequency control	Multiple triangular wave frequency control
	Counting control	Counting function
Input/ Output Terminals	Input terminal	Programmable Dl: 7 switch inputs, including 1 high-speed pulse input
	Input terminal	Programmable AI: 2 channels, VCI: voltage -10V~10V; Voltage 0-10V or current 0-20mA input
	Output terminal	Programmable open collector output: 1 output (open collector output or high-speed pulse output), 2 relay outputs Analog output: 2 outputs, selectable from 0/4-20mA or 0-10V
Interface	LED display	Can display parameters such as frequency, output frequency, output voltage, output current, etc

Frequency Conversion Water Supply Control Cabinet Quality Test

Water Resistance Testing

Cabinets are subjected to water spray and immersion testing. Provides protection against moisture penetration.

Functional Testing

Validates all control functions, including automatic procedures and manual overrides. Integration tests are conducted using simulated water supply equipment.

Durability Checks

Tests resistance to corrosion, UV exposure, and temperature changes. Ensures long-term dependability in a variety of installation scenarios.

Application Scope of Frequency Conversion Water Supply Control Cabinet

● It is widely used in various types of water supply systems in urban and rural areas.

● High-rise building water supply, domestic water and fire water, industrial production conditions closed-loop water constant pressure control.

● Automatic control of boiler make-up pump and thermal heating circulating pump.

● Farmland irrigation, fountain control.

● Air conditioning system and cooling circulating water control.

Product Warranty

According to the terms of the contract, the equipment provided enjoys a two-year warranty service from the date of successful installation and commissioning, of which the electrical part has a warranty period of 18 months.

Our Certificate

FAQ

Q: What is a submersible pump controller?

A: A submersible pump controller is an advanced device designed to optimise the operation of a water pump by intelligently regulating its speed, pressure, and flow. The primary purpose of a pump controller is to enhance pump performance, ensuring that the system runs smoothly and efficiently while simultaneously minimising energy consumption and reducing wear and tear on the pump components.

Q: How does a submersible pump controller work?

A: When a pump controller receives a signal from a pressure or flow sensor, it processes this information and adjusts the pump's speed accordingly. This ensures that the pump maintains the desired pressure and flow rate, even as demand fluctuates.

Q: What are the main features of a good submersible pump controller?

A: A good controller should have accurate sensing capabilities, reliable protection mechanisms, easy programmability, and compatibility with different pump models.

Q: What is a frequency conversion water supply control cabinet?

A: The frequency conversion water supply control cabinet collects the signal of the pressure transmitter and the water level signal of the water level controller. The inverter adopts the Chinese liquid crystal display to be easier to operate, and compares with the preset signal to obtain the deviation value, according to the deviation value. Size and nature, issued frequency increase, frequency reduction, dormancy, start pump, stop pump instructions, and implement constant pressure water supply to high buildings.

Q: How does a frequency conversion water supply control cabinet work?

A: It senses the water pressure or flow and uses a frequency converter to vary the speed of the pump motor accordingly to maintain the desired water supply parameters.

We're well-known as one of the leading controllers suppliers in China. If you're going to wholesale high quality controllers, welcome to get quotation from our factory. For price consultation, contact us.