DJSF82 DC electric energy meter is a UL certified rail-mounted intelligent meter designed for the power statistics and management needs of power systems, industrial and mining enterprises, public utilities, telecom base stations, DC charging piles, solar photovoltaic. The product has the advantages of high precision, small size and easy installation. The meter could measure voltage, current, power, and forward and reverse energy of dual DC circuits in a DC system. The instrument can be widely used in various control systems, power monitoring systems and energy management systems, and can be easily collected and remotely controlled through supporting background management software or other industrial configuration software.
The instrument has RS-485 communication interface, supports Modbus-RTU protocol and DLT645-2007 protocol, and can be equipped with relay alarm output and switching input function. According to different requirements, the rated current, alarm and communication are set through the buttons on the instrument panel.
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Instantaneous true RMS value |
Current, voltage, active power |
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Maximum/minimum value |
Max/Min current, voltage, active power |
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Demand and peak demand value |
Current, active power |
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Energy |
Input/output active reactive energy, month-end electrical energy |
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Multi-tariffs |
8 billing periods, 4 tariffs can be set |
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Alarm |
8 configurable limit alarm channels & 4 configurable logical alarm channels |
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Communication |
RS-485 /MODBUS-RTU, DL/T 645-2007 |
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Display |
TFT LCD |
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Real-time clock |
Year, month, day, minute, second |
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Other |
Program online upgrade supported |
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Dual circuits monitoring |
1 circuit or 2 circuits |
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Digital Output (DO) |
2 DO, 2A/30VDC or 2A/250VAC(optional) |
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Digital Input (DI) |
2 dry contact inputs or 2 channels of Hall sensor power supply (optional) |
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Electrical characteristics |
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System |
DC system (1 circuit / 2 circuits) |
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Measurement accuracy |
Active energy |
Class 1.0 |
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Voltage input |
Rated voltage(6 options) |
DC100V, DC300V, DC500V, DC700V, DC750V, DC1000V |
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Current input |
Measuring current(7 options) |
Shunt：5A~1000A/75mV, |
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Hall Sensor Power Supply |
Supply voltage |
±12V(±10%) or 24V(±10%) |
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Power supply |
≤ 1W |
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Working power supply(three options) |
AC |
85~265 VAC/45-65Hz |
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DC |
9~36 VDC |
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Power consumption |
≤ 5W |
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Function |
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Display |
Screen |
TFT LCD |
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Resolution |
240*320 |
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Communication |
Interface |
RS485 |
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Protocol |
Modbus-RTU, DL/T 645-2007 |
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Baud rate |
2400, 4800, 9600, 19200, 38400, 57600 |
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Switching IO |
Output |
2 DO, 2A/30VDC or 2A/250VAC(optional) |
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Input |
2 dry contact inputs or 2 channels of Hall sensor power supply (optional) |
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Pulse output |
PPS output |
Default to PPS output |
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Energy pulse output |
It needs to be set according to the power level |
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Hall Sensor Power Supply |
Supply voltage |
±12V(±10%) or 24V(±10%) |
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Power supply |
≤ 1W |
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Mechanical characteristic |
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Weight |
≤0.5kg |
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Size |
93mm*72mm*71.4mm |
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Operating temperature |
-20~70°C |
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Storage temperature |
-25~70°C |
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Humidity |
≤93%RH, non-condensing, no corrosive gases |
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Altitude |
≤2500m |
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Code: DJSF82-A-B-C-D-E-F-G-H |
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A. Model code: Rated voltage |
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1 |
DC1000V |
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2 |
DC750V |
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3 |
DC700V |
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4 |
DC500V |
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5 |
DC300V |
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6 |
DC100V |
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B. Model code: Type of current sensor |
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1 |
Shunt: 75mV |
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2 |
Hall sensor: 0-5V |
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3 |
Hall sensor: 0-4V |
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4 |
Hall sensor: 0-20mA |
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5 |
Hall sensor: 4-20mA |
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6 |
Hall sensor: 0-100mA |
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7 |
Hall sensor: 0-10V |
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C. Model code: Working power supply |
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1 |
85-264 VAC/45-65Hz, 100-300 VDC |
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2 |
9-36 VDC |
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D. Model code: Number of measured circuits |
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1 |
1 channel |
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2 |
2 channels |
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E. Model code: Digital Output (DO) |
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0 |
No DO |
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1 |
1 DO |
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2 |
2 DOs |
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F. Model code: Digital Input (DI) |
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0 |
No DI, no hall sensor power supply |
| 1 |
2 DIs |
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2 |
The second hall sensor power supply |
| 3 |
1 DI |
| G. Model code: The first hall sensor power supply | |
| 0 |
No hall sensor power supply |
| 1 |
The first hall sensor power supply |
| H. Model code: Number of RS485 communication channel | |
| 1 |
1 channel |
| 2 |
2 channels |
