ABB REM620 | Comprehensive Motor Protection & Control IED | IEC 61850 Ready

Description

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3. Key Technical Specifications

4. Product Introduction

The ABB REM620 is a dedicated motor protection and control IED from ABB’s Relion® 620 series, specifically designed for the protection, control, measurement, and monitoring of medium and large asynchronous motors requiring differential protection in manufacturing and processing industries.The Relion 620 series represents ABB’s advanced protection platform that brings substation-grade protection technology with enhanced communication capabilities to distribution and motor applications. The REM620 variant is optimized for motor-specific protection requirements with the added capability of motor differential protection, making it ideal for critical motor applications where maximum protection sensitivity is required.Key Features:

• Motor Differential Protection (87M): Provides high-sensitivity protection against internal motor faults by comparing current at both ends of the motor winding. Essential for large motors where standard overcurrent protection may not provide adequate sensitivity.
• Comprehensive Motor Protection: Includes thermal overload protection with accurate motor thermal modeling, stall protection during start-up and running, start-up supervision (excessive start time, locked rotor), and negative sequence protection for unbalanced conditions.
• IEC 61850 Native: Built from the ground up to support IEC 61850 Edition 2, enabling seamless integration into modern digital substations and smart industrial networks. Supports GOOSE messaging for high-speed interlocking and control schemes.
• Redundant Communication: Supports PRP (Parallel Redundancy Protocol) or HSR (High-availability Seamless Redundancy) for zero-delay redundant Ethernet communication, ensuring maximum availability for critical motor protection applications.
• Flexible Busbar Configuration: Supports both single and double busbar configurations, with options for 1 or 2 breakers and multiple switching devices, providing flexibility for various motor control schemes.
• RTD Temperature Monitoring: Supports direct connection of RTD sensors (Pt100, Pt1000, Ni100) for accurate stator and bearing temperature monitoring, providing an additional layer of thermal protection.
• Remote I/O Support: Can be expanded with ABB RIO600 remote I/O devices for additional digital and analog I/O points, providing scalability for complex motor control applications.
• Advanced Diagnostics: Features extensive self-monitoring, condition monitoring, and disturbance recording capabilities to aid in predictive maintenance and root cause analysis.
• Cybersecurity: Designed with “security by design” principles, complying with IEC 62351 standards to protect against cyber threats.

Typical Applications:

• Large industrial motors in manufacturing plants
• Pump and compressor motors in oil & gas facilities
• Fan motors in power plants
• Crusher and mill motors in mining operations
• Critical process motors where differential protection is required

The REM620 is configured entirely via the PCM600 software suite, offering intuitive graphical configuration, setting management, and real-time monitoring. We supply genuine new surplus units with full factory documentation and configuration files.

5. Troubleshooting Quick Reference

Closing Suggestion: For complex issues involving differential protection or communication protocols:

1. Export the Disturbance Record and Event Log via PCM600.
2. Capture the Configuration File (.IED) from PCM600.
3. For differential issues, verify CT polarity and ratios at both motor terminals.
4. Provide these files to technical support for detailed analysis.

Our engineers can typically diagnose communication or logic issues within 2 hours using these data points.

6. Frequently Asked Questions (FAQ)

Q1: What is the difference between REM615, REM620, and REG620?A: All are part of the Relion series but optimized for different applications and protection levels:表格

Choose REM615 for standard motor applications, REM620 for large/critical motors requiring differential protection, and REG620 for generator protection.Q2: Does the REM620 support motor differential protection?A: Yes. The REM620 includes Motor Differential Protection (87M) as a core function, which is the key differentiator from the REM615. This provides:

• High-Sensitivity Fault Detection: Can detect internal winding faults that standard overcurrent protection might miss.
• Phase-Separated Differential: Evaluates each phase independently for accurate fault identification.
• CT Saturation Detection: Built-in stability enhancement through CT saturation detection, preventing false trips during external faults.
• Through-Current Restraint: Ensures stability during motor start-up when high inrush currents flow.

This makes the REM620 ideal for large motors (typically >1MW or critical applications) where maximum protection sensitivity is required.Q3: What communication protocols does the REM620 support?A: The REM620 natively supports multiple communication protocols:

• IEC 61850 (Edition 1 & 2): MMS for client-server communication, GOOSE for high-speed peer-to-peer communication, SCL for system configuration.
• IEC 60870-5-103/104: Serial and TCP/IP variants for SCADA integration.
• Modbus TCP/RTU: Widely used industrial protocol for integration with various systems.
• DNP3: Common in North American utility applications.

Additionally, it supports PRP (IEC 62439-3) and HSR (IEC 62439-3) for redundant Ethernet communication, ensuring zero-delay failover for critical applications.Q4: What software is used to configure the REM620?A: The ABB PCM600 (Protection and Control Manager 600) software is the standard engineering tool. It provides:

• Intuitive graphical configuration of protection functions.
• IEC 61850 system configuration (SCL file handling).
• Real-time monitoring and testing.
• Disturbance record analysis.
• Firmware management.
• Setting comparison and documentation.
• RIO600 remote I/O configuration.

PCM600 is compatible with Windows 10/11 and supports all Relion 615/620/670 series devices.Q5: Can the REM620 work with remote I/O devices?A: Yes. The REM620 is compatible with ABB RIO600 remote I/O devices, which allows:

• Scalable I/O: Add additional digital and analog I/O points as needed.
• Distributed Architecture: Place I/O closer to field devices, reducing wiring costs.
• Flexible Installation: Remote I/O can be installed in separate cabinets or locations.
• Seamless Integration: Configured through the same PCM600 software as the main REM620 unit.

This is particularly useful for large motor installations where I/O points are spread across different locations.Q6: What busbar configurations does the REM620 support?A: The REM620 supports flexible busbar configurations:

• Single Busbar: Standard configuration for simple motor control schemes.
• Double Busbar: For applications requiring busbar transfer or redundancy.
• Breaker Options: 1 or 2 breakers per motor circuit.
• Switching Devices: Support for multiple disconnectors, earthing switches, and contactors.

This flexibility allows the REM620 to be used in various motor control center (MCC) configurations and switchgear arrangements.Q7: How does the motor differential protection work in REM620?A: The REM620 motor differential protection works by:

1. Current Comparison: Compares current entering and leaving the motor winding (using CTs at both ends).
2. Differential Current Calculation: Calculates the difference between the two current measurements.
3. Restraint Characteristic: Uses a percentage differential characteristic with through-current restraint to ensure stability during external faults and motor start-up.
4. Trip Decision: If the differential current exceeds the configured threshold (considering restraint), a trip signal is issued.

Key Settings:

• Differential Pickup: Minimum differential current to initiate protection.
• Slope: Percentage slope of the differential characteristic.
• Second Harmonic Restraint: Prevents false trips during motor start-up (inrush current).
• CT Match: Compensates for different CT ratios at each end.

Q8: What is the warranty and support status for REM620?A: As a current-generation product, the REM620 is fully supported by ABB with long-term availability guarantees.

• Warranty: We provide a 12-month warranty on our New Surplus units (covering hardware defects).
• Support: Full access to ABB technical documentation, firmware updates, and software tools.
• Lifecycle: Expected service life exceeds 15-20 years with ongoing support.
• Spare Parts: Individual modules and components available for repair.

Contact info

• WhatsApp: +86 18030182217
• Email: sandydcsplc@gmail.com
• Phone: +86 18030182217
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