The DJSF1352-RN is a dual-channel rail-mounted DC power meter designed for monitoring voltage, current, power, and energy in DC systems such as telecom base stations, solar PV plants, EV charging infrastructure, and industrial controls. It features two isolated input channels and supports multiple sensor types including shunt and Hall sensors. The unit is equipped with RS485 and infrared communication for seamless integration into industrial SCADA or EMS networks. Its compact size, high accuracy, and versatile I/O functions make it an ideal choice for modern distributed DC metering.

Technical Specifications

Feature	Specification
Model	DJSF1352-RN
Voltage Input Range	DC 0–1000V
Current Input Options	Shunt: 0–75mV; Hall: 0–20mA, 4–20mA, 0–5V, 0–10V
Measurement Channels	Dual (two independent DC inputs)
Accuracy Class	Class 1
Display	8-segment LCD screen
Communication Interfaces	RS485 and infrared
Communication Protocols	Modbus-RTU, DL/T645-1997/2007
Digital Inputs (DI)	2 dry contact inputs
Relay Outputs (DO)	2 relays (2A @ 30VDC or 250VAC)
Pulse Output	Energy and second pulse output
Power Supply Options	AC/DC 85–265V, DC24V ±10%, DC48V ±10%
Power Consumption	≤3W
Operating Temperature	-25°C to +65°C (normal); -40°C to +70°C (limit)
Storage Temperature	-40°C to +80°C
Humidity	≤93% RH (non-condensing)
Altitude	≤2500m
Installation	35mm DIN rail mounting
MTBF	≥50,000 hours
Insulation Resistance	≥40MΩ
Withstand Voltage	3kV for 1 min (varies by interface)

Functions

• Real-time voltage, current, power, and energy measurement (both channels)
• Independent forward and reverse energy tracking
• Event logging and parameter freeze (DL/T645 protocol)
• Programmable thresholds for alarms and ratios via front panel
• Relay outputs for system fault alerts or interlocking control
• Multi-protocol support for seamless EMS or SCADA integration
• Supports both current shunt and Hall effect sensor inputs
• Configurable via LCD interface with password protection

Applications

• Telecom base station power monitoring
• DC charging piles (EV infrastructure)
• Solar photovoltaic plant performance tracking
• Industrial DC distribution boards
• Railways and transportation system monitoring
• Remote DC power metering in automation or utility settings

Manufacturer Information

Acrel Co., Ltd., established in 2003, is a high-tech enterprise specializing in energy efficiency management and electrical safety solutions. With a comprehensive product line ranging from cloud platform software to sensors, Acrel offers smart energy meters, power sensors, and protection devices. Their products are widely utilized across industries such as electric power, communications, rail transit, petrochemical, and construction. In 2012, Acrel was listed on the Growth Enterprise Market with the stock code 300286.SZ. The company is committed to delivering innovative and reliable energy management solutions to its global clientele.