The AM2 Series Protection Relay is a comprehensive microcomputer-based relay designed for precise and reliable protection of electrical systems. It offers advanced features including 3-stage overcurrent protection, earth fault detection, undervoltage, overvoltage, and automatic reclosing. Integrated RS485 communication enables seamless monitoring and remote control via Modbus or IEC 60870-5-103 protocols. With its user-friendly interface, robust diagnostics, and flexible mounting options, the AM2 series is ideal for modern industrial and utility-grade protection systems.

Technical Specifications

Feature	Specification
Model	AM2 Series
Protection Types	Overcurrent (3-stage), Earth Fault (2-stage), Overvoltage, Undervoltage, Residual Overvoltage, PT Disconnection
Overcurrent Curve Options	Normal inverse, Very inverse, Extremely inverse, Long-term inverse
Auto Recloser	3-phase auto-recloser supported
Communication Interfaces	RS485
Supported Protocols	Modbus, IEC 60870-5-103
Digital Inputs (DI)	Programmable for logic input and signaling
Relay Outputs (DO)	Trip, warning, operating, and control relays
Measurements	Voltage (U, U0), Current (I0), Frequency (F)
Mounting Options	Vertical (V) or Horizontal (H)
Display Interface	LCD with navigation buttons
Event Logging	Operation logs, fault history, SOE records
Auxiliary Power Options	24V, 48V, 110V, 220V AC/DC
Installation	Panel mounted

Functions

• Real-time monitoring and fault detection
• Relay control (trip, close) and remote signaling
• Event record display and log export
• CT/PT ratio setting, calibration, compensation, and diagnostics
• Telecontrol functions with address and baud rate configuration
• Advanced digital and analog input/output for flexible system integration

Applications

• Low voltage electrical panel protection
• Industrial distribution switchboards
• Substation feeder and transformer safety systems
• Rail and transport electrification monitoring
• Remote telemetry and energy automation 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.