DEM2D Series is DC metering device that uses shunt sampling. Support RS485 communication, DLT 645/MODBUS protocol. Rail-mounted installation has the characteristics of good reliability, small size, beautiful appearance, and convenient installation.
DEM2D Series is DC metering device that uses shunt sampling. Support RS485 communication, DLT 645/MODBUS protocol. Rail-mounted installation has the characteristics of good reliability, small size, beautiful appearance, and convenient installation.
Type |
DEM2D002 |
DEM2D102 |
DEM2D003 |
DEM2D103 |
Voltage input: |
DC 5V~1000V |
DC 5V~1000V |
DC 5V~1000V |
DC 5V~1000V |
Auxiliary power supply |
85~300V AC or 85-300V DC |
85~300V AC or 85-300V DC |
DC 9-60V |
DC 9-60V |
Current: |
Shunt connection method, the primary side current supports up to 2000A Connection signal :75mV |
Shunt connection method, the primary side current supports up to 2000A Connection signal :75mV |
Shunt connection method, the primary side current supports up to 2000A Connection signal :75mV |
Shunt connection method, the primary side current supports up to 2000A Connection signal :75mV |
Accuracy current: |
0.5% |
0.5% |
0.5% |
0.5% |
Voltage Accuracy |
0.5% |
0.5% |
0.5% |
0.5% |
Active Power Accuracy |
1.0% |
1.0% |
1.0% |
1.0% |
Active Accuracy |
Class 1.0 |
Class 1.0 |
Class 1.0 |
Class 1.0 |
Constant: |
According to 1000imp/kWh, 1.2 times the maximum voltage and current, the pulse width is 1.2ms, corresponding to the current setting |
According to 1000imp/kWh, 1.2 times the maximum voltage and current, the pulse width is 1.2ms, corresponding to the current setting |
According to 1000imp/kWh, 1.2 times the maximum voltage and current, the pulse width is 1.2ms, corresponding to the current setting |
According to 1000imp/kWh, 1.2 times the maximum voltage and current, the pulse width is 1.2ms, corresponding to the current setting |
LCD: |
LCD 6+2 |
LCD 6+2 |
LCD 6+2 |
LCD 6+2 |
Consumption: |
≤8VA ≤0.4W |
≤8VA ≤0.4W |
≤8VA ≤0.4W |
≤8VA ≤0.4W |
Temperature: |
-25~70℃ |
-25~70℃ |
-25~70℃ |
-25~70℃ |
Humidity: |
≤95% |
≤95% |
≤95% |
≤95% |
AC withstand voltage |
4400V/min |
4400V/min |
4400V/min |
4400V/min |
Impulse withstand voltage |
6.4kV - 1.2/50µS waveform
|
6.4kV - 1.2/50µS waveform
|
6.4kV - 1.2/50µS waveform
|
6.4kV - 1.2/50µS waveform
|
Battery |
YES |
NO |
YES |
NO |
Muti-tariff |
YES |
NO |
YES |
NO |
Relay |
YES |
NO |
YES |
NO |
● RS485 communication: used for parameter setting, data reading; DTL645 protocol/Modbus Protocol
● DC metering: using shunt sampling, high measurement accuracy; can measure DC power, current, voltage,
● Alarm function: Over-current alarm: When the current exceeds the CT1 value set by the meter, an alarm event occurs, and the alarm light on the electrical surface panel lights up (yellow light),
At the same time, the value of the corresponding alarm status register will change, and the user can read this register through communication to determine whether an over-current alarm has occurred.
● Display: LCD with backlight ,Support Various parameters display,energy data and Instantaneous parameters
● Firmware upgrade: RS485 local upgrade
Height 90mm
Width 36mm
Depth 73mm
confirms that this user guide has been read;
falling, please do not install, power on, and contact us in time;
with lead. It can be installed directly.
base should be fixed on a solid refractory wall with no corrosive gas in the air;
preferably with copper wire or copper terminal.
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