The Eastron SDM630 M Modbus energy meter is a three-phase meter equipped with an RS-485 port and a certified MID Modbus-RTU protocol. It includes two pulse outputs, one of which is adjustable. The meter measures and displays supply characteristics of single-phase with two wires (1p2w), three-phase with three wires (3p3w), and three-phase with four wires (3p4w).

The measured parameters include:

• Voltage (V)
• Frequency (Hz)
• Current (A)
• Capacity (kW/kVA/kVAR)
• Consumed energy (import)
• Supplied energy (export)
• Total energy (kWh/kVARh)

Additionally, it indicates peak current flow and power demand, measured at adjustable intervals from 1 to 60 minutes. The meter operates with a load up to 100A and does not require connection to current transformers (CT).

Technical specifications:

• AC Voltage (Un): 3x230(400)V
• Voltage range: 80 ~ 120% Un
• Base current (Ib): 10A
• Maximum current (Imax): 100A
• Minimum current (Imin): 0.3A
• Starting current: 0.4% Ib
• Power consumption: 2W/10VA (voltage measurement circuit), 4VA (current measurement circuit)
• Voltage accuracy: 0.5% of full scale
• Current accuracy: 0.5% of nominal current
• Frequency accuracy: 0.2% of average frequency
• Power factor accuracy: 1% of the unit (0.01)
• Active power accuracy (W): 1% of full scale
• Reactive power accuracy (VAR): 1% of full scale
• Apparent power accuracy (VA): 1% of full scale
• Active energy (Wh): Class 1 IEC 62053-21
• Reactive energy (VARh): 1% of full scale
• Signal response time: 1 second input step, typically above 99% of final reading at 50 Hz
• Operating temperature: -40°C to 70°C
• Storage temperature: -40°C to 70°C
• Relative humidity: 0 to 95% non-condensing
• Altitude: up to 2000 m above sea level
• Warm-up time: 5 seconds
• Vibration: 10Hz to 50Hz, 2g, IEC 60068-2-6
• Shock: 30g
• Protection class: IP51 (indoor)
• Material: Self-extinguishing UL94 V-0
• Display: 400 Imp/kWh
• Dimensions (DIN): 72 x 100 mm (width x height) according to DIN 43880
• Mounting rail: DIN (DIN 43880)