for Dual Circuits Monitoring EV Charger and Solar PV project
DJSF1352-RN rail-mounted DC power meter with double DC input channels, designed for telecommunications base stations, DC charging piles, solar photovoltaic, and other applications, this series of meters can measure the voltage, current, power and forward and reverse energy, and so on in the DC system. In the actual use of the site, you can measure the total power, but also measure the energy within a specified period of time. The test results can be used for local display, but also with industrial control equipment, and computers to form a measurement and control system.
The meter has an infrared communication interface and RS485 communication interface and supports Modbus-RTU protocol and DLT645-97(07) protocol at the same time. The meter has a relay alarm output and digital input function. It can set the ratio, alarm, and communication through the meter panel keys according to different requirements. The meter has event recording of the switch(Modbus protocol), programming and event setting records(645 protocol), instantaneous and timing freeze function of data(645 protocol), and maximum and minimum value recording function of voltage and current power.
Dual Independent DC Circuits Monitoring
For Twin EV Charger&Battery
Voltage Input:DC 0~1000V
Current Input (by Shunt): 0~75mV
Current Input (by Hall Sensor): 0~5V, 0~10V, 0~20mA, 4~20mA
Built-in Bipolar Power Source
Power Supply for Hall Effect CT
Range: DC -12V ~ DC +12V
Optional Dual RS485 Communication
Protocol: MODBUS-RTU
1 RS485 (standard)
DO/DI Function
2 DO (2A/30V DC; 2A/250V AC)
2 DI (dry contact)
LCD Display
Parameter Display
Programming Interface
Keypads HMI for Programming Parameter Display Setting Communication |
| Technical parameters | Indicators | ||
| Input | Nominal value | Voltage input range | Current input |
| DC 0-1000V See the physical wiring diagram | Shunt:0-75mV; Hall sensor:0-20mA,4-20mA,0-5V,0-10V and so on | ||
| Overload | 1.2 times rated (continuous); 2 times rated/1 second; | ||
| Power consumption | Voltage: ≤0.2VA, current ≤0.1VA | ||
| Accuracy class | Class 1 | ||
| Function | Display | 8-bit segment LCD screen (LCD) | |
| Communication Interface | RS485, infraredRS485, infrared | ||
| Communication protocol | Modbus-RTU, DL/T 645-2007 | ||
| Switch | Switch output | 2 Relay outputs, 2A/30VDC or 2A/250VA | |
| Switch input | 2 dry contact inputs | ||
| Pulse output | A second pulse output, an energy pulse output | ||
| See the SYS->PLUS display in the meter menu setting For example, The meter displays 100, which is 100imp/kWh | |||
| Power Supply | Voltage range | AC/DC 85-265V or DC24V(±10%) or DC48V(±10%) | |
| Power consumption | ≤ 3W | ||
| Power frequency withstands voltage | Power 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 | ||
| Environment | Temperature | Normal operating temperature: -25 °C ~ +65 °C; Limit working temperature: -40 °C ~ +70 °C; Storage temperature: -40ºC~+80ºC | |
| Humidity | ≤93%RH, no condensation, no corrosive gas | ||
| Altitude | ≤2500m | ||
| Wiring with Shunt | Wiring with Hall Sensor |
1. High Accuracy
High overload
High precision
Low power consumption
Automatically save power outage data, long life
2. Multi-Communication
LCD digital, RS485 communicates with microcomputer
Solar PV Power Distribution Monitoring Solution
Practical Application in Solar PV with Energy Storage Inverter
Practical Application in Solar PV with on-grid Inverter
Practical Application in Twin EV Charger
