Carlo Gavazzi EM530 and EM540 three-phase energy analysers for DIN-rail mounting, with MID certification. They measure active and reactive energy (import/export, dual tariff), voltage, current, power, power factor, frequency, and harmonics (THD up to the 15th harmonic), using TRMS values, in single-, two- and three-phase systems (including ARON and wild-leg) up to 415 V. Communication: Modbus RTU RS485 or M-Bus, or pulse/alarm output; a digital input is available for tariff/status control. Self-powered, IP40 front. Applications: energy measurement and billing in low-voltage switchboards of traction substations, submetering, power quality monitoring, and integration with the UWP gateway and UCS software.
