Eastron SDM320-C - Introduction; Unit Characteristics; Specifications

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EASTRON SDM320-C User Manual
06-2018 V1.0
2018 EASTRON Electronic. All Rights Reserved. www.eastron.com.cn
Introduction
The SDM320-C is a single phase multifunction remote control direct connect meter. It has a
built-in relay, you can remote control turn on or off when you work in front of computer. Besides,
it has alarm system, the relay will open automatically when the parameter reachs the alarm value.
There are 26 types alarm object and alarm value you can set by rs485. SDM320-C measures and
displays the characteristics of single phase two wires (1p2w) supplies, including voltage, current,
frequency, power, active and reactive energy, imported and exported. Energy is measured in
terms of kWh, kvarh. In order to measure energy, the unit requires voltage and current inputs in
addition to the supply required to power the product.
SDM320-C supports max. 100A direct connection, saves the cost and avoid the trouble to connect
external CTs, giving the unit a cost-effective and easy operation. Built-in interfaces provides pulse
and RS485 Modbus RTU outputs. Configuration is password protected.
Unit Characteristics
The Unit can measure and display:
 Line voltage
 Frequency
 Line Currents
 Power, maximum power demand and power factor
 Active energy imported and exported
 Reactive energy imported and exported
The unit has password-protected set-up screens for:
 Changing password
 Demand Interval Time(DIT)
 Pulse Output Duration
 Backlit Lasting Time
 Display Scroll Time
s
Specifications
Electrical characteristics
Type of measurement
RMS including harmonics on single phase AC system
Measurement
accuracyss
Power
IEC 61557-12 Class 0.5
Active Energy
IEC 62053-22 Class 0.5S, IEC 61557-12 Class 0.5
Reactive Energy
IEC62053-23 Class 2, IEC 61557-12 Class 2
Frequency
±0.2%
Current
±0.5%
Voltage
±0.5%
Power Factor
±0.1%
Data Update Rate
1 second nominal
Power Consumption Per Phase
≤2W/10VA
Max Reading
999999.99kwh/kvarh