Product Features
The series frequency conversion constant pressure water supply system is a new type of automated water supply equipment composed of microcomputer technology, frequency conversion speed regulation technology and automatic control technology. It can track the pipeline characteristic curve to determine the water supply pressure value, meet the constant pressure variable water supply demand, and keep the water supply system in the best operating state of high efficiency and energy saving. It is a new high-tech product that replaces old water supply equipment such as water towers, high-level water tanks, and constant pressure tanks. . The series of variable frequency constant pressure water supply systems are mainly composed of various sensors, water pump units, intelligent controllers, frequency converters, etc. The municipal pipe network provides tap water into the variable frequency constant pressure water supply system. The pressure sensor receives the pressure signal from the pipe network and transmits it to the control operation. The output signal is sent to the frequency converter. The frequency converter automatically changes the output frequency and adjusts the speed of the water pump according to the size of the output signal. When the user's water consumption increases and the pipe network pressure decreases, the control output signal value becomes larger, the frequency converter increases the output frequency, and the water pump speed increases to increase the water delivery volume to meet user needs. When the user's water consumption decreases and the pipe network pressure increases, the control output signal value decreases, the inverter reduces the output frequency, and the water pump speed slows down to reduce the water delivery volume to achieve energy saving effects. The series of variable frequency constant pressure water supply systems also have an automatic sleep function for small water volumes at night. When the water consumption is very low or no, and the pipeline pressure remains unchanged, the variable frequency constant pressure water supply system will send a signal to stop the water pump. If the water consumption changes, the pipeline pressure will When the value increases, the system will automatically wake up the water pump to run normally. This system also has a scheduled pump replacement function. After the first water pump has been running for a period of time (the running time is determined on site), the system automatically switches to the backup water pump, and the backup water pump runs automatically. The operating status is the same as that of the first water pump.
Operating environment conditions
, ambient temperature ~ +℃
, water pump medium temperature ~ +℃
, relative humidity not greater than, no condensation
, no corrosion in the installation site non-toxic gas, no dust, no strong vibration (maximum vibration speed).
The series of variable frequency constant pressure water supply systems have the following characteristics
1. Fully automated operation. After being put into operation, the system will automatically operate in a closed loop and no human operation is required during the period.
, low investment, more than old water supply equipment.
The equipment has high efficiency and obvious energy saving. Through automatic control, the water pump is in the best operating condition, which saves electricity than the constant speed running water pump. The soft start function has less impact on the power grid and equipment and extends the service life of the equipment.
The series of variable frequency constant pressure water supply systems have various protection and alarm functions
①, pipeline pressure protection alarm
②, equipment overheating protection alarm
③, motor short-circuit protection alarm
④, input and output phase loss protection alarm
⑤, water pump three-phase unbalance protection alarm
⑥, water pump starting overcurrent protection alarm
⑦, water pump running overload protection alarm
⑧, Alarm when the power supply voltage is too high or too low
⑨, protection alarm when resuming operation after shutdown
⑩, series of variable frequency constant pressure water supply system control water pump methods including one use and one standby, two uses and one standby, three uses and one standby, etc. Various control methods.
Product parameter description
Main technical indicators of the product
Control cabinet model
Applicable water pump
Usage renderings
Constant pressure water supply device
Comparison of product advantages and disadvantages
▲Standard working power supply/
▲Frequency control range
▲Frequency accuracy ( Analog) (Digital)
▲Frequency control signal～ (～) or～
▲Starting torque rated current (zero speed)
▲Overload capacity rated current (minutes)
▲ Acceleration and deceleration time range ~ seconds
▲Ambient temperature ℃～℃
▲Relative humidity
▲Inverter load power
▲Inverter load current
▲Outline dimensions
/> ▲Weight
☆Product execution standards/
CPS fully automatic frequency conversion constant pressure water supply system