Socomec meters, connected properly.

Socomec Diris meters are common in commercial and industrial switchboards and are capable instruments: full three phase measurement, energy accumulation and, on the higher models, power quality data. A large proportion of the ones we encounter have never been connected to a network.

We also do a lot of work with the DIRIS MCM multi circuit range. An MCM-16 or MCM-48 puts sixteen or forty eight metered circuits inside one enclosed unit, using 333 mV split core or Rogowski sensors, which makes it a practical way to submeter a building without finding panel space for dozens of individual meters. It is revenue grade, so it holds up for tenant billing.

Integration is over Modbus TCP where the meter has an Ethernet module, or Modbus RTU over RS-485 where it does not. RTU is frequently the cheaper route for meters already installed, since a daisy chain to a single gateway avoids running Ethernet to every panel.

The details matter more than the protocol. CT ratios have to match what is physically installed, register data types and byte order have to be read correctly, and scaling factors are usually buried in an appendix. Getting any of those wrong produces readings that look plausible and are wrong by a factor of ten.