Intelligent multifunctional power meter

A digital intelligent electrical meter is a type of meter that can directly measure power parameters such as current, voltage, power, power factor, and frequency. It is displayed digitally and the measured values can be displayed locally or connected to a microcomputer through an RS485 serial interface to form a measurement and control system. The meter also has two passive alarm contact outputs (upper and lower limits) that can set the alarm value arbitrarily. Some meters also have 4-20mA, 0-20mA, or 0-5V analog signal output interfaces, which are convenient for remote control RTUs Connected, the instrument panel is equipped with programmable buttons that facilitate the setting of display magnification, alarm values, instrument logic addresses, communication baud rates, etc. The instrument can directly display the electrical parameters of the system's primary side operation. The instrument automatically adjusts the display range according to the size of the measured value (the decimal point is automatically adjusted according to the measured value). The instrument adopts a switch power supply inside and has low requirements for auxiliary working power supply (AC and DC power supply are universal). This series of instruments has strong anti-interference performance, and its anti-interference performance meets the requirements of IEC electromagnetic compatibility level 3. Other standards comply with GB/T 13978-92. This series of instruments is a high-performance automation instrument suitable for modern power supply and distribution systems such as industrial and mining enterprises, civil buildings, building automation, power plants, substations, etc.