SDM120CT-Modbus CT operated Multifunction Single Phase Energy Meter With RS485 Communication

Application

The energy-meters “with a white back-lighted LCD screen for prefect reading” are used to measure single-phase like residential, utility and Industrial application. The unit measures and displays various important electrical parameters, and provide a RS485 communication port for remote reading and monitoring. Bi-directional energy measurement makes the unit a good choice for solar PV energy metering. The compact design and din rail installation provides a easy and economical solution for your metering demand.

General Specifications

General Specifications

Voltage AC (Un) 230V
Voltage Range 176~276V AC
Base Current (Ib) 0.1VAC
Power consumption <2W/10VA Frequency 50/60Hz(±10%) AC voltage withstand 4KV for 1 minute Impulse voltage withstand 6KV-1.2uS wavform Overcurrent withstand 30Imax for 0.01s Pulse output rate 1000imp/kWh (default) 0.001(default) /0.01/0.1/1/10/100/1000 kWh/kVarh (configurable) Display LCD with white backlit Max. Reading 99999.9kWh Accuracy Voltage 0.5% of range maximum Current 0.5% of nominal Frequency 0.2% of mid-frequency Power factor 1% of Unity Active power 1% of range maximum Reactive power 1% of range maximum Apparent power 1% of range maximum Active energy Class 1 IEC62053-21 Class B EN50470-3 Reactive energy 1% of range maximum Environment Operating temperature -25℃ to + 55℃ Storage and transportation temperature -40℃ to +70℃ Reference temperature 23℃±2℃ Relative humidity 0 to 95%, non-condensing Altitude up to 2500m Warm up time 10s Mechanical Environment M1 Electromagnetic environment E2 Degree of pollution 2 Output Pulse Output The meter provides two pulse outputs. Both pulse outputs are passive type. Pulse output 1 is configurable. The pulse output can be set to generate pulses to represent total /import/ export kWh or kVarh. The pulse constant can be set to generate 1 pulse per: 0.001(default) /0.01/0.1/1/10/100/1000 kWh/kVarh. Pulse width: 200/100/60ms Pulse output 2 is non-configurable. It is fixed up with total kWh. The constant is 1000imp/kWh. RS485 output for Modbus RTU The 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 by the Modbus command. Baud rate: 1200, 2400, 4800, 9600 Parity: NONE/EVEN/ODD Stop bits: 1 or 2 Modbus Address: 1 to 247 Mechanics Din rail dimensions 17.5x119x62 (WxHxD) DIN 43880 Mounting DIN rail 35mm Sealing IP51 (indoor) Material Self-extinguishing UL94V-0 Measures kWh, Kvarh, KW, Kvar, KVA, PF, Hz, dmd, V, A, etc. • Bi-directional measurement IMP & EXP • Two pulse outputs • RS485 Port modbus RTU • 17.5 mm width 1 modual • CT operated • Class 1.0 accuracy • Din rail Mounted