Common drive modes for valve actuators include single-phase motors and three-phase motors, which have obvious differences in performance, applicable scenarios, power requirements, etc. The following is a comprehensive comparison to help you make reasonable judgments when selecting:
Performance comparison:
| Performance metrics | Single phase motor | Three-phase motor |
|---|---|---|
| Power Range | Generally no more than 3kW | Can cover more widely (from hundreds to tens of kilowatts) |
| Starting torque | Small starting torque, capacitor assistance is required during startup | Large starting torque, stable start |
| Operational efficiency | Relatively low, easy to cause heat | High efficiency and energy saving, less heat |
| Operational stability | Uneven torque, slightly vibration | Stable torque and smoother operation |
| Service life span | Relatively short, frequent start and stop are more likely to be inflated | Longer life, suitable for high frequency start and stop |
| Noise/vibration | Slightly taller | Quietrifying, less vibration |
Single-phase motor actuators are suitable for 220V power supply environment, small load, simple control logic, and lack of three-phase power on site, such as the following typical uses:
1. Small building automation system: such as HVAC valve control in building automation system, commonly powered by 220V.
2. Residential or commercial water treatment system: such as household water purification equipment, automatic water softener control valve, etc., easy to use, no industrial power supply required.
3. Agricultural irrigation system: irrigation control valves in remote areas, mostly single-phase power supply.
4. Light industrial/commercial equipment: such as small boilers, fan coil matching valve actuators, etc.
5. Portable or mobile equipment: equipment or temporary systems that need to be powered by ordinary sockets.
Three-phase motor actuators are suitable for three-phase industrial power supply environment (such as 380V), with high torque, long life, continuous and stable operation capabilities, suitable for heavy load and high-frequency start and stop occasions, such as the following typical uses:
1. Industrial pipeline automation system: such as large and medium-sized pipeline network valve control in petroleum, chemical, metallurgy, papermaking, power plants, etc.
2. Large water treatment/sewage treatment systems: frequent valve opening and closing, high torque requirements, and strong requirements for operational reliability.
3. Power station/boiler/heating system: electric regulating valves or switch valves under high temperature and high pressure environments.
4. Municipal pipe network, energy transmission system: such as urban water supply, natural gas, steam and other trunk pipeline control.