ABB REM610 Motor Protection Relay

• Voltage Inputs: Support for voltage measurement (specific configurations may vary).
• Switching Inputs: Three electrically isolated digital inputs, expandable to five with optional modules.
• Switching Outputs: Three normally open heavy-duty output contacts and two normally open/normally closed signal output contacts. Output functions can be freely configured based on actual requirements.
• Communication Protocols: Supports SPA bus, IEC 60870-5-103, and Modbus (RTU and ASCII) communication protocols for seamless integration into various substation automation systems.
• Communication Interfaces: Optional front panel communication via wireless or cable. Back panel communication modules can be selected with plastic optical fiber, combined optical fiber (plastic and glass), or RS-485 interface for system communication.
• Event Recording: Non-volatile memory stores up to 100 event codes with timestamps, setting values, fault recorder data, and the last five event records with timestamps.
• Fault Recording Module: Records four analog channels and up to eight user-selectable digital channels. The recording time can be up to 80 seconds with an adjustable sampling rate.
• Display: High-contrast graphical LCD display for local monitoring and configuration.
• Operating Temperature: Designed to operate reliably in a wide range of temperatures.
• Protection Class: IP44 (depending on configuration), offering good protection against dust and water ingress.

Functional Characteristics

• Comprehensive Protection Functions:
  • Three-phase overcurrent protection with definite time characteristics and speed switch blocking.
  • Three-phase short-circuit protection with instantaneous or definite time characteristics.
  • Three-phase undercurrent (load loss) protection with definite time characteristics.
  • Non-directional earth fault protection with definite time characteristics.
  • Three-phase thermal overload protection based on heat stress calculation.
  • Three-phase unbalance protection based on negative sequence current with inverse definite minimum time characteristics.
  • Reverse phase sequence protection based on negative sequence current.
  • Accumulated start time counter with restart inhibition.
  • Circuit breaker failure protection.
  • Temperature protection with definite time characteristics.
  • Emergency start function.
• Advanced Monitoring and Control:
  • Real-time monitoring of motor status and fault conditions.
  • Jump circuit monitoring for enhanced safety.
  • Time synchronization via digital inputs.
  • User-selectable password protection for hierarchical operation.
• Flexible Configuration:
  • Eight freely definable LEDs for quick fault indication and status monitoring.
  • Support for multi-language displays.
  • Configurable input/output functions to meet diverse application needs.
• Self-Monitoring and Diagnostics:
  • Continuous self-monitoring of internal electronic components and software.
  • Automatic blocking of all protection and output contacts in case of internal faults.
  • Indication of fault codes and LED status for rapid troubleshooting.

Application Scenarios

• Industrial Motor Protection: Widely used in manufacturing, petrochemical, mining, and papermaking industries for protecting various medium-voltage motors.
• Utility Distribution Networks: Applied in medium-voltage feeder circuits to ensure stable power supply and reliable operation of electrical equipment.
• Renewable Energy Integration: Supports the integration of renewable energy sources into the grid, ensuring stable operation and protection of distributed generation assets in microgrids and hybrid power systems.
• Critical Infrastructure Protection: Used in critical infrastructure sectors such as transportation, water treatment, and healthcare, where a reliable power supply is essential for safety and operational continuity.
• Substation Automation: As an integral part of substation automation systems, the REM610 facilitates seamless communication and coordination between different components, improving operational efficiency and reducing maintenance costs.