The ADW350 Wireless Metering Meter is designed for real-time three-phase active energy monitoring in low-voltage distribution systems. It supports wireless and wired communication protocols including NB-IoT, 4G, RS485 Modbus-RTU, and infrared, offering seamless integration into EMS, SCADA, and cloud platforms. With support for external CTs or Hall sensors, the ADW350 enables flexible deployment without needing to disconnect power. It features rich power quality analysis functions, compact form factor, and optional digital I/O, making it ideal for smart grid, sub-metering, and regional energy supervision applications.

Technical Specifications

Feature	Specification
Model	ADW350
Voltage Input	AC: 3×57.7/100V, 3×220/380V, 3×380/660V; DC: 48V
Current Input	AC 3×20(100)A or DC 50A/100A via CT or Hall sensor
Frequency	50Hz
Power Supply	AC 85–265V / DC 48V (±20%)
Power Consumption	<5W
Accuracy	Class 0.5 (active energy), Class 1 (general)
Temperature Measurement	Range: -40°C to +100°C, Accuracy: ±2°C
Display	LED indicators and optional LCD
Pulse Output	AC: 400 imp/kWh; DC: 1600 imp/kWh
Communication Interfaces	RS485, NB-IoT, 4G, Infrared
Protocol	Modbus-RTU
Digital Outputs (DO)	3-channel relay output (5A, AC250V/DC30V)
Digital Inputs (DI)	Remote signal input with internal +12V power
Measurement Functions	U, I, P, Q, S, PF, F, THDv, harmonics (2nd–31st), unbalance
Operating Temp.	-20°C to +55°C
Storage Temp.	-40°C to +70°C
Humidity	≤95% RH (non-condensing)
Altitude	≤2000m
Mounting	DIN-rail

Functions

• Three-phase voltage and current monitoring with harmonic analysis
• Energy tracking: active (positive/negative), reactive, total
• Remote alarms and device control via digital output relays
• Two-way temperature monitoring with external sensors
• Real-time data transmission via NB-IoT/4G/RS485
• Configurable pulse output for energy signal feedback
• Flexible installation using split-core CTs or Hall current sensors

Applications

• Distributed energy management systems
• Industrial and commercial power panels
• Smart grid and IoT-based metering platforms
• Regional sub-metering and energy supervision
• PV monitoring and retrofit installations

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.