ABB REG670 Generator Protection & Control Relay

ABB REG670 Generator Protection and Control Relay – Advanced Power Generation Safeguarding

The ABB REG670 is a state-of-the-art numerical protection and control relay specifically engineered for comprehensive generator protection in power plants, industrial cogeneration facilities, and distributed energy systems. Part of ABB's renowned Relion® protection relay family, the REG670 delivers multi-functional differential protection, precise synchronization control, and real-time monitoring capabilities to ensure maximum generator availability and grid stability.

Core Protection Functions

• Differential Protection (87): High-impedance and low-impedance differential schemes for stator winding fault detection
• Overcurrent Protection (50/51): Phase and ground fault protection with definite and inverse time characteristics
• Restricted Earth Fault (87N): Sensitive ground fault detection for stator windings
• 100% Stator Ground Fault (64G): Third-harmonic voltage-based protection covering entire stator winding
• Loss of Excitation (40): Detects field circuit failures preventing asynchronous operation
• Over/Under Voltage (27/59): Protects against abnormal voltage conditions
• Over/Under Frequency (81O/U): Monitors grid frequency deviations
• Reverse Power (32): Detects motoring conditions in synchronous generators

Technical Specifications

• Current Inputs: Up to 6 three-phase current channels (1A or 5A nominal)
• Voltage Inputs: Up to 3 three-phase voltage channels
• Binary I/O: 18 configurable binary inputs, 11 output relay contacts
• Communication: Dual Ethernet (IEC 61850, DNP3, Modbus TCP), dual serial (SPA, IEC 60870-5-103)
• Power Supply: 24-60 VDC or 48-250 VDC / 100-240 VAC options
• Operating Range: -25°C to +55°C ambient temperature
• Mounting: 19" rack (4U) or panel mount configuration
• Dimensions: 177 mm (H) × 177 mm (W) × 144 mm (D)
• Protection Rating: IP54 front panel, IP20 rear terminals
• Standards: IEC 60255, IEEE C37.102, CE, UL, CSA certified

Application Scenarios & Industrial Solutions

Power Generation Plants: Deploy in thermal, hydro, and combined-cycle power stations to protect synchronous generators ranging from 1 MVA to 1000+ MVA. The REG670's differential protection algorithms detect internal stator faults within milliseconds, preventing catastrophic damage and minimizing downtime costs.

Industrial Cogeneration: Ideal for manufacturing facilities with on-site generation where reliability is paramount. Integrated synchronization functions enable seamless paralleling with utility grids while maintaining compliance with IEEE 1547 interconnection standards.

Renewable Energy Integration: Supports hybrid power systems combining conventional generators with solar/wind resources. Advanced frequency and voltage control functions maintain grid stability during renewable fluctuations and islanding scenarios.

Marine & Offshore Applications: Ruggedized design withstands harsh maritime environments in shipboard power systems, offshore platforms, and floating production facilities where generator protection is mission-critical.

Advanced Control & Monitoring Capabilities

• Automatic Synchronization: Precision synchro-check and auto-synchronizer functions for safe grid connection
• Load Shedding: Programmable under-frequency and under-voltage load shedding schemes
• Event Recording: High-resolution fault recording with pre-fault and post-fault waveform capture
• Metering: Real-time measurement of voltage, current, power (active/reactive), frequency, and rotor angle
• Condition Monitoring: Thermal overload tracking, breaker wear monitoring, and predictive maintenance alerts
• IEC 61850 Integration: Native GOOSE messaging and MMS reporting for seamless substation automation

Related Protection & Control Products

Key Advantages for System Integrators

• ✓ Multi-Functional Design: Replaces multiple single-function relays, reducing panel space and wiring complexity
• ✓ Cybersecurity Ready: Role-based access control, encrypted communications, and IEC 62351 compliance
• ✓ Flexible Configuration: PCM600 engineering tool enables rapid parameterization and logic customization
• ✓ Hot-Swappable Modules: Field-replaceable I/O cards minimize maintenance downtime
• ✓ Global Support Network: ABB's worldwide service infrastructure ensures rapid technical assistance

Compliance & Certifications

The REG670 meets stringent international standards including IEC 60255 (protection relay requirements), IEEE C37.102 (AC generator protection), and carries CE, UL, and CSA certifications for global deployment. EMC compliance ensures reliable operation in high-noise industrial environments.

Ordering & Availability

• Model Number: REG670 (multiple configuration variants available)
• Lead Time: In-stock units ship within 3-5 business days
• Warranty: Standard manufacturer warranty included
• Technical Support: Expert application engineering assistance available
• Documentation: Complete manuals, CAD drawings, and IEC 61850 ICD files provided

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