Energy meters can be divided into what

By use: active watt-hour meter, reactive watt-hour meter, maximum demand meter, standard watt-hour meter, multi-rate time-sharing watt-hour meter, prepaid watt-hour meter (split coin type, magnetic card type, electric card type), loss watt-hour meter, multi-function watt-hour meter and smart watt-hour meter

Working principle: induction type (mechanical type), static type (electronic type), electromechanical integrated type (hybrid type)

According to the nature of access power supply: AC table, DC table

By structure: integral, split

According to the access phase line: single-phase, three-phase three-wire, three-phase four-wire watt-hour meter

According to the accuracy level: ordinary installed energy meter (0.2s, 0.5S, 0.2.0.5.1.0, 2.0) and portable precision energy meter (0.01, 0.05, 0.2)

By installation connection mode: direct access type, indirect access type