Eastron SDM72D-M User Manual V1.1
Introduction
The SDM72D-M is digital three phase 4 wire energy meter with a white back-lighted LCD screen for perfect reading.
The unit measures and displays voltage, current, frequency, power factor, active power, reactive power, active
energy and reactive energy. A resettable partial energy is provided, so the user can easily check the active energy
imported and active energy exported during a certain period. SDM72D-M supports max.100A direct connection,
saves the cost and avoid the trouble to connect external CTs, giving the unit a cost-effective and east operation.
Built-in interfaces provide pulse and RS485 Modbus RTU outputs. Configuration is password protected.
PART 1 Specification
General Specifications
Voltage AC (Un) 3x230(400)V
Voltage Range 80~120% Un
Base Current (Ib) 10A AC
Max. Current (Imax) 100A AC
Mini Current (Imin) 5% of Ib AC
Starting current 0.4% of Ib
Power consumption ≤ 2W/10VA for the voltage measuring circuit
≤ 4VA for the current measuring circuit
Frequency 50/60Hz (±10%)
AC voltage withstand 4KV for 1 minute
Impulse voltage withstand 6KV-1.2uS wavform
Overcurrent withstand 30 Imax for 0.01s
Power supply self-power supply
Display LCD with backlit
Max. Reading 999999.9kWh
Active energy Class 1 IEC62053-21
Class B EN50470-3
Reactive energy Class 2 IEC62053-23
Unit Characteristics
Characteristics: Accuracy: Resolution:
⚫ Voltage 0.5% ≤ 0.1V
⚫ Current 0.5% ≤ 0.1A
⚫ Frequency 0.2% ≤ 0.2%
⚫ Power factor 1% ≤ 0.1
⚫ Active power 1% ≤ 0.1kW
⚫ Reactive Power 1% ≤ 0.1 kVAr
⚫ Active energy imported and exported 1%
⚫ Reactive energy 2%
≤ 0.1kWh
≤ 0.1 kVArh
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B+G e-tech GmbH (EASTRON Germany) • www.eastron-germany.de • info@bg-etech.de • Fax: 03574 467550
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