The ADL100-EY and ADL300-EY Series are high-performance DIN-rail mounted energy meters designed for precise measurement and data communication in single-phase and three-phase AC power systems. With multiple tariff support, configurable communication, and anti-tamper features, they are ideal for sub-metering in residential, commercial, and industrial environments. Integrated with RS485 Modbus-RTU or DL/T645 protocol, these meters provide reliable data for EMS, BMS, or smart grid applications.

Technical Specifications

Feature	ADL100-EY (Single-Phase)	ADL300-EY (Three-Phase)
Voltage	AC 220V	AC 3×220/380V
Current Range	5(60)A or 5(80)A	3×1.5(6)A or 3×10(80)A
Frequency	50/60Hz	50/60Hz
Display	LCD with backlight, multi-line	LCD with backlight, multi-line
Accuracy Class	Active energy: Class 1	Active energy: Class 1
Pulse Output	1 output (active energy)	1 output (active energy)
Communication	RS485 (Modbus-RTU / DL/T645)	RS485 (Modbus-RTU / DL/T645)
Relay Control (optional)	Remote switching / alarm linkage	Remote switching / alarm linkage
Tariff Support	4 rates, 14 time intervals	4 rates, 14 time intervals
Auxiliary Power	AC 85–265V or DC 100–350V	AC 85–265V or DC 100–350V
Power Consumption	<1W / 5VA	<2W / 10VA
Mounting	35mm DIN rail	35mm DIN rail
Dimensions (mm)	Compact (model-dependent)	Compact (model-dependent)
Installation Type	Din-rail with terminal seal cover	Din-rail with terminal seal cover

Functions

• Real-time monitoring of voltage, current, power, and energy
• Forward and reverse energy measurement
• Configurable multi-rate billing with time-based metering
• RS485 communication with external monitoring platforms
• Built-in pulse output for external data collection
• Optional relay control for remote device switching
• Internal anti-tamper mechanisms with sealable terminal covers

Applications

• Smart residential energy metering
• Commercial complex sub-metering
• Industrial machine-level energy tracking
• Building automation and lighting systems
• Intelligent energy billing and load control systems

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