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
• [email protected] • Fax: 03574 467550