Three phase voltmeter and three-phase digital voltmeter have very similar names, so some people often mistake them for the same instrument. In fact, there is a big difference between the two. Today, let me tell you the difference between the two.

A three-phase voltmeter is used to measure voltage parameters in three-phase electricity and is generally used in high-voltage distribution cabinets and low-voltage cabinets. The unit is represented by V (volt) in Chinese. It is an instrument that uses an analog-to-digital converter to convert measured voltage values into digital form and represent them in digital form. It is suitable for use in environments with temperatures ranging from 0 to 50 ℃ and humidity below 85%. When voltage abnormalities are caused by magnetic fields or high-frequency instruments, high-voltage sparks, lightning, etc., external interference absorption circuits such as power line filters or nonlinear resistors should be used.

The digital three-phase voltmeter is a new generation programmable intelligent instrument that uses large-scale integrated circuits and high brightness, long-life LED displays. It applies digital sampling technology to measure, display, and control the phase voltage and line voltage in the three-phase electrical circuit in real time, and transmits the measured voltage data remotely through RS485 interface or analog transmission output interface.