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https://www.acrel.gr/products/djsf-series-dc-energy-meter/

Acrel DJSF Series modbus dc power meter with double channels DC input is mainly designed for telecom base station, DC charging pile, solar photovoltaic and other applications. This series of meters can measure voltage, current, power and positive and negative energy in the DC system.

DJSF Series DC Energy Meter For Sale
● RS485 communication, Modbus-RTU protocol ● kWh, kVarh, Power, Current, Voltage measure ● suitable for Charging Pile; Solar PV, battery system ● two channel dc circuits, event recording, max demand

DJSF1352-RN Din Rail kWh Meter DC

DJSF Series DC Energy Meter Datasheet
Technical parametersIndicators
InputNominal valueVoltage input rangeCurrent input
DC 0-1000VShunt：0-75mV；
See the physical wiring diagramHall sensor：0-20mA、4-20mA、0-5V，0-10V and so on.
Overload1.2 times rated (continuous); 2 times rated/1 second;
Power consumptionVoltage: ≤0.2VA, current ≤0.1VA
Accuracy classClass 1
FunctionDisplay8-bit segment LCD screen (LCD)
Communication InterfaceRS485, infrared
Communication protocolModbus-RTU, DL/T 645-2007
SwitchSwitch output2 Relay outputs, 2A/30VDC or 2A/250VA
Switch input2 dry contact inputs
Pulse outputA second pulse output, a energy pulse output
See the SYS->PLUS display in the meter menu setting
For example: The meter displays 100, which is 100imp/kWH
Power SupplyVoltage rangeAC/DC 85-265V or DC24V(±10%) or DC48V(±10%)
Power consumption≤ 3W
Power frequency withstand voltagePower supply // Voltage input // Current input // Relay output and switch input // Communication interface / / Pulse output 3kV/1minPower supply // Relay output // Voltage input // Current input 3kV/1minPulse output // Communication interface // Switch input 2kV/1min
Insulation resistance≥ 40M Ω
Average barrier-free working hours≥50000h
EnvironmentTemperatureNormal operating temperature: -25 °C ~ +65 °C;
Limit working temperature: -40 °C ~ +70 °C;
Storage temperature: -40℃～+80℃
Humidity≤93%RH, no condensation, no corrosive gas
Altitude≤2500m

How Does A DJSF Series DC Energy Meter Work?
DJSF1352-RN has two channels dc circuits input. The input voltage shall not be higher than 120% of the rated input voltage of the product. 1A fuse shall be installed at the voltage input end. The current input should be external shunt or Hall current sensor. The instrument provides RS485 communication interface and supports Modbus-RTU protocol. Theoretically, up to 128 instruments can be connected on a line at the same time. Each instrument can set its Addr and baud, and also can be selected by setting.

DJSF Series DC Energy Meter FAQs
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what is a DJSF DC energy meter?
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DJSF dc energy meter with rs485 is designed for DC screen, solar power supply, telecom base station, subway and other applications.

how does a DJSF DC energy meter work?
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The DC voltage and the DC current are measured separately with two DMM, and the results are multiplied to get the DC power.

How does a DJSF energy meter Installation?
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use 35mm guide rail which is convenient and quick to install.

Which signal input does DJSF dc energy meter support?
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voltage supports 1000V input, current supports shunt (0-75mV), Hall sensor (0-20mA, 4-20mA, 0-5V) access.

Now the price of power meter for solar panels is low, if you are interested, please contact us.