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Classification of commonly used electricity meters


(1) Electric energy meters can be divided into DC energy meters and AC energy meters based on the circuit they use. According to its phase line, AC watt hour meter can be divided into Single-phase electric power watt hour meter, three-phase three wire watt hour meter and three-phase four wire watt hour meter.

(2) Energy meters can be divided into electrical mechanical energy meters and electronic energy meters (also known as static energy meters or solid-state energy meters) based on their working principles. Electromechanical energy meters are used as ordinary energy measuring instruments in AC circuits, with the most commonly used being induction type energy meters. Electronic energy meters can be divided into fully electronic energy meters and electromechanical energy meters.

(3) Electric energy meters can be divided into integral and split types according to their structure.

(4) Energy meters can be divided into active energy meters, reactive energy meters, maximum demand meters, standard energy meters, multi rate hourly energy meters, prepaid energy meters, loss energy meters, and multi-functional energy meters according to their purposes.

(5) Electricity meters can be divided into ordinary installation type electricity meters (0.2, 0.5, 1.0, 2.0, 3.0 levels) and portable precision level electricity meters (0.01, 0.02, 0.05, 0.1, 0.2 levels) based on their accuracy level.