• KQLE Smart Variable Frequency Pump relies on our company’s sixth-generation single-stage single-suction centrifugal pump, with high efficiency, energy saving, and reliable performance and quality reaching the level of foreign brand products.
• KQLE Smart Variable Frequency Pump is an intelligent product integrating heating, cooling, and pipeline systems. It adopts design solutions such as motors, water pumps, intelligent variable frequency controllers, and fault alarms, providing you with a higher value experience while meeting pumping functions.
• Products below 7.5kW do not have fault warning function. After the intelligent variable frequency pump is equipped with the sensorless variable frequency function, the pump controller will store the performance characteristic curve of the pump in its memory. During operation, the sensorless controller is responsible for monitoring power and pump speed, establishing the system’s flow requirements, and controlling the pump to ensure that the operating point moves along the control curve. During operation, the controller automatically adjusts the pump speed according to the actual system characteristics to meet the system’s requirements, while ensuring that the pump operates at the lowest speed on the control curve, reducing the life cycle cost to a minimum.
• KQDQ/KQDPE series lightweight vertical intelligent constant pressure variable frequency pump group combines variable frequency speed regulation and automation control technology, which can achieve constant pressure water supply through the connected pressure transmitter. The whole machine is mainly composed of KQDQ/KQDP pump, controller, sensor, pressure tank, water outlet pipe, check valve, and axial seismic pressure gauge, with stable performance, high efficiency, energy saving, fully automatic intelligent control, low noise, corrosion resistance, compact structure, beautiful appearance, small size, light weight, and other characteristics.
• KQDQ/KQDPE series lightweight vertical intelligent constant pressure variable frequency pump group is mainly used in air conditioning systems, cooling systems, industrial cleaning, water treatment (water purification), aquaculture, and residential water supply systems.
• The fifth generation Plus digital integrated variable frequency water supply equipment is applied in high-rise buildings, residential areas, villas, hospitals, schools, gymnasiums, airports, commercial buildings: hotels, office buildings, department stores, etc.
• Full parameter detection: not only detects pressure and frequency, but also various flow rates, power parameters, energy efficiency parameters, etc.
• Full digital control: a control system design based on dual PLC as the foundation, it is a truly digital control system.
• Full frequency conversion integration: professionally tailored pump-packaged frequency converter, integrating electromechanical integration, creating an intelligent “E-pump”.
• Full intelligent control: integrating full parameter detection, full digital, and full frequency conversion into one, professional intelligent control.
• The efficient and quiet digital integrated variable frequency water supply equipment has undergone technological innovation and breakthroughs based on Kaiquan’s core product “Fifth Generation Water Supply Equipment”. The pump is equipped with a super-efficient mixed magnetic synchronous integrated machine, using internationally leading electromagnetic models and control technology, with motor efficiency reaching the new national standard Class 1 energy efficiency, reducing motor noise by nearly 20% compared to existing products. The pump, motor, frequency converter, and programmable controller are designed as an integrated unit, with stable structure and attractive appearance. Bus communication and data sharing between frequency converters realize intelligent control and variable frequency speed regulation, ensuring stable water supply pressure.

The product has the following features:

• Self-control dual system: dual system redundant control, minimizing the risk of shutdown and water interruption;
• Automatic speed regulation: high-performance closed-loop speed regulation, constant pressure accuracy of s0.01MPa, stable time of 3~5s;
• Terminal constant pressure: using flow and pressure control, simulating constant pressure at the user terminal, more energy efficient and comfortable;
• Manual control: manual start/stop and frequency adjustment through the touchscreen or frequency converter operating panel;
• Data monitoring: pressure, liquid level, speed, voltage, current, power, cumulative operating time, etc.;
• Intelligent IoT: equipped with Ethernet interface, wireless communication, seamless connection with smart water service platform;
• Compensation for regulation: during peak water usage, the automatic compensation device controls stored water sources for regulation and compensation to users;
• Water age control: automatically adjusts based on changes in water usage load and reservoir liquid level, optimizing water age;
• Balanced operation: after a set time of single pump operation, it automatically switches to the other operating unit, balancing the running time of pumps;
• Sleep pressure maintenance: during low flow at night, the equipment automatically sleeps, maintaining water pressure and quantity through the pressure tank;
• Ultra-high pressure protection: in case of pressure transmitter failure or excessively high network pressure, the system can automatically shut down and issue overpressure alarms;
• Burst pipe protection: if the water supply pressure falls below the set super-low pressure value, the system will judge and automatically shut down after a delay, issuing a low-pressure burst pipe alarm.