Energy meters 3-phase trafometer
"GM3T, GM3T-RS485 and GM3T-Mbus are energy meters for 3-phase systems when current transformers are used. It is compact, only 4 modules wide and has self-powered power supply. The meters are billing approved according to MID (MI003). The current direction must be correct, kWh does NOT count up and the LED does NOT flash if the current direction is incorrect. Current and voltage must be measured on the same phase. Neutral conductor must be available. NOTE the current transformers’ terminal S2 must be earthed and connected to (1) (3) (5) to give the correct current direction."