Efficient Mute Digital Integrated Frequency Conversion Water Supply Equipment
The efficient and silent digital integrated frequency conversion water supply equipment has made technological innovations and breakthroughs based on Kaiquan’s core product “Fifth Generation Water Supply Equipment”. The water pump is equipped with an ultra-efficient hybrid magnetic synchronous machine, which adopts internationally leading electromagnetic models and control technology. The motor efficiency reaches the new national standard level 1 energy efficiency, and the motor noise is reduced by nearly 20% compared with existing products.
Efficient Mute Digital Integrated Frequency Conversion Water Supply Equipment
Efficient ● Silent ● Integrated ● Intelligent
The water pump, motor, frequency converter, and programmable controller are designed in an axial direction, with stable structure and beautiful appearance. Bus communication and data sharing between frequency conversion controllers realize intelligent control and frequency conversion speed regulation to ensure the stability of water supply pressure.
- Main functions
- Model Description
- KQG-E5 Product schematic
- KQG-E5 Product size chart
- WFY-E5 product diagram
- WFY-E5 product size chart
| Main functions | Contents |
| Automatic dual system | Dual system redundant control minimizes the risk of shutdown and water outage; |
| Automatic speed adjustment | High-performance closed-loop speed regulation, constant voltage accuracy ≤0.01MPa, stabilization time 3~5s; |
| Terminal constant voltage | It adopts variable current and voltage control method to simulate the constant voltage of user terminal, which is more energy-saving and comfortable; |
| Manually control | Manual start, stop and frequency adjustment through touch screen or inverter operation panel; |
| Data monitoring | Pressure, liquid level, speed, voltage, current, power, accumulated running time, etc.; |
| Smart IoT | Equipped with Ethernet interface and wireless communication, it can be seamlessly connected with the smart water platform; |
| Adjustment and storage compensation | During peak water usage, the automatic control compensation device will compensate the stored water source to the user; |
| Water age control | According to changes in water load and water storage level, the water tank volume is automatically adjusted to optimize water age; |
| Balanced operation | After a single pump runs for a set time, it automatically switches to another one to balance the running time of the water pump; |
| Hibernation holding pressure | At low flow rate at night, the equipment automatically sleeps and relies on the air pressure tank to maintain water pressure and water volume; |
| Ultra high voltage protection | If the pressure transmitter fails and the pipe network pressure is too high, the system can still automatically shut down and issue an overpressure alarm; |
| Explosion proof pipe protection | If the water supply pressure is lower than the set ultra-low pressure value, the system will automatically shut down after a delay and issue a low-pressure alarm for pipe bursting. |


KQG-E5 product diagram

| Main parts name list | |||
| NO. | Name | NO. | Name |
| 1 | Control cabinet | 7 | Service valve |
| 2 | Hybrid magnetic all-in-one machine (2~4 units) | 8 | Suction main |
| 3 | Vertical multi-stage water pump (2~4 units) | 9 | Check valve |
| 4 | Outlet main pipe | 10 | Air pressure tank valve |
| 5 | Pressure sensors, pressure gauges | 11 | Pressure tank and gold flexible hose |
| 6 | Cover plate | 12 | Water leakage detection |
KQG-E5 product size chart


| Main parts name list | |||
| NO. | Name | NO. | Name |
| 1 | Control cabinet | 9 | Stable flow tank iron pad or vibration isolation pad (configured on demand) |
| 2 | Mixed magnetic integrated machine (2~4 units) | 10 | Service valve |
| 3 | Vertical multi-stage water pump (2~4 units) | 11 | Suction main |
| 4 | Outlet main pipe | 12 | Check valve |
| 5 | Pressure sensors, pressure gauges | 13 | Pressure tank valve |
| 6 | Cover plate | 14 | Pressure tanks and metal hoses |
| 7 | Vacuum suppressor | 15 | Water leakage detection |
| 8 | Stable flow tank | ||
WFY-E5 product size chart

Highly efficient and energy-saving, reducing equipment operating costs
●The whole series comes standard with Kaiquan’s third-generation high-performance stainless steel stamping pump, which can increase the efficiency by more than 5% compared with domestic water pumps in the same industry; .
●The entire series is equipped with hybrid magnetic synchronous machine as standard, and the efficiency is higher than the requirements of Class-1 energy efficiency (IE5);
●Digital integrated full frequency conversion system, multi-pump operation, and speed regulation at the same frequency, the average unit energy consumption of the equipment can be reduced by 3%-5%;
●Adopt high-strength full-bore ball valves and new low-resistance silent check valves to improve equipment transmission efficiency;
●Variable flow, variable pressure, pressure tank, multi-parameter and other intelligent control technologies. Compared with traditional solutions, it saves more than 20% energy.
Intelligent IoT, unattended
●Full parameter detection: pressure, speed, voltage, current, power, energy consumption, accumulated time, etc., to improve the perception ability of the equipment;
●Industrial Ethernet, wireless remote monitoring and other communication modules are standard configuration, seamlessly connecting with the smart water platform;
●Supports real-time access from various clients such as computer Web browsers and mobile APPs to realize “zero” distance inspection of pump rooms.
Easy to install and simple to operate
●Mechanical and electrical – integrated and compact design, the equipment footprint is reduced by 30%;
●Zero” wiring in the pump room. Zero” wiring, the installation cycle is shortened by more than 50%;
●Full frequency conversion + intelligent human-computer interaction system, minimalist operation and quick debugging.
The pump unit is quiet and low-noise (7.5kW test data)
Take the test comparison with KQDQE 50-20-74 of the same power as an example.
●Noise under rated operating conditions can be as low as 73.5dB (A), a reduction of 5.3%;
●Noise under small flow conditions can be as low as 63.1dB (A), reduced by 15.9%;
●Noise under no-load condition can be as low as 57.3dB (A), reduced by 22.7%;
Stable and reliable operation, safe water supply guaranteed
● Full frequency conversion system control, the water supply pressure is more stable, bringing a more comfortable water experience;
●Automatic dual-system redundant control to minimize the risk of shutdown and water outage;
●Digital integrated design reduces components and wiring, and the failure rate is greatly reduced;
●All flow-passing parts are made of stainless steel and have intelligent water age control to prevent secondary pollution of water quality;
Suitable for high temperature, high humidity, dust and other basement environments
●Control cabinets, frequency converters and other complete machines have P55 protection level, and the equipment is dustproof and waterproof;
●The internal board of the frequency conversion controller has undergone “three-proof” treatment through a fully automatic UV coating production line to prevent moisture and condensation;
●The frequency conversion controller can meet the reliable operation of the ambient temperature range of 25C-55″C.
●Daily water use: high-rise buildings, residential areas, etc.;
●Commercial building water use: star hotels, commercial complexes, etc.;
●Water for public buildings: airports, schools, cultural and sports centers, hospitals, etc.




