LED 3 Phase Digital Energy Meter MPM8900

April 6, 2012 - PRLog -- Profile

DEM8900-1/DEM8900-2/DEM8900-3 (short form for DEM8900)is designed by adopting the updated microprocessor and digital signal processing technology, which can be applied for monitoring the electrical system. DEM8900 can measure and analyze the real time electrical parameters, such as I, kWh, kvarh., Meanwhile, DEM8900 has functions of  multi-tariff,RS485 communication ( MODBUS protocol),analog output, remote input and electrical pulse output.


EMC and Safety standard
IEC61000-4-2 (GB/T17626.2)
IEC61000-4-8 (GB/T17626.8)
IEC61000-4-4 (GB/T17626.4)
IEC61010-1 (GB/T4793.1)


Measured scope
The meter can be applied in secondary measure in high and low voltage electrical system.The measured data can be communication transmitted.It can achieve the function of meansureing and anylzing parameters for single phase, 3-Ph 3wire and 3-Ph 4Wire system (include unbalance load).

Measured parameters
No.   Variables                      Unit                Direction Display (Max.)   Accuracy
1   Current                        A/kA      9.999 kA   Class 0.2
2   Active Power   kW/MW   Directional   20mA   Class 0.5
3   Reactive Power   kVar/MVar   Directional   20mA   Class 0.5
4   Active Energy   kWh   Directional   999999.99 MWh   Class 1.0
5   Reactive Energy   kvarh   Directional   999999.99 Mvarh   Class 2.0

Note: 1. DEM8900-1 measure current, active energy, active power (optional, with analog output)
2. DEM8900-2 measure current, reactive energy, reactive power (optional, with analog output)
3. DEM8900-3 measure Current, active energy, reactive energy, active/reactive power (optional, with analog output)

Technical Specification
Current Input
Current Input:5A  (Current value can be set up)  
Measurement scope:0.5%~120% In
Overload capacity:2 X rated continuously, 100A/1s non continuously
Power consumption:≤ 0.2 VA per phase
Voltage Input
Voltage Input:400VAC(phase voltage),693VAC(wire voltage)
System frequency : 45~65Hz
Measurement Scope: 3%~120% Un
Overload capacity: 2 X rated continuously,2500V/1s non continuously
Power consumption: ≤ 0.5VA per phase
Remote Input ( optional)  
Input channel: 1channel
Input mode:Dry contact
Isolated Voltage: 2500VAC
Analog Output ( optional)  
Output channel: 1 channel programmable
Output signal: 4~20mA or 0~5V (optional)  
Response time:  ≤400ms
Isolated Voltage:2000VAC
Pulse Output
Output channel: 2 channel (active/reactive energy each without power)  
Serial Communication Interface (optional)  
Channels of output: 1 channel RS-485 interface
Communication protocol: Modbus-RTU protocol
Baud rate: 2400, 4800, 9600, 19200, 38400 bps
Multi-tariff function (optional)  
Interval number: 2 - 12 ( The ending interval can cross 0:00)  
Interval longth: a multiply of 30 minutes
Multi-tariff rate type: sharp,peak,flat,valley
Other parameters
Auxiliary power: 85~265VAC/DC (30VDC is optional; 2 is “+" terminal and 1 is “-" terminal when use DC power)
Display type: LED display  
Temp. drifting factor:

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Shenzhen Huayansheng Electron Limitedhave many years of history in industrial measuring and analyzing products. Our products include smart power distribution systems, power quality monitoring and analysis management system, temperature, humidity and vibration monitoring and management system, wireless vibration measurement system, online power quality analyzer, smart low voltage motor protection controller, electricity transmitter, electronic active / reactive energy meter, the motor re-start controllers and so on. Integrating R&D, product design and sales, we can offer OEM and ODM service. Welcome to visit www.szhyes.com