Power meter SDM120 modbus model is light blue LED screen make clear visibility. It is appropiately used for house, commercial store, office, home appliances and electric equipments that use single phase power. Output signal protocol is serial port RS485 modbus RTU. The size of meter is standard 35 mm DIN rail 1 module size that can be install like circuit braker.
- Norminal voltage(Un) : AC 120V or 230V
- Current transformer (CT) 2 size alternative between 30A/100mA and 100A/100mA
- Operational voltage : 80% - 120% of Un
- AC voltage withstand : 4KV for 1 minute
- Impulse voltage withstand : 6KV - 1.2 micro-second
- Primary current : 30A or 100A optional
- Operational frequency range : 50 or 60 Hz
- Internal power consumption : Less than 2W/10VA
- Pulse output1 : Configurable
- Pulse output2 : 1000imp/kWh
- Maximum reading : 999,999 kWh
Pulse outputThe meter provides two pulse outputs. Both pulse outputs are passive type.
RS485 outputThe meter provides a RS485 port for remote communication. Modbus RTU is the protocol applied. For Modbus RTU, the following RS485 communication parameters can be configured from the Set-up menu.