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ABB REG670 Generator Protection Relay  

1. Key Parameters

• Product Model: REG670
• Order Code Reference: Typically paired with ABB accessory kits (e.g., 3BHB009203R0001, including communication cables, CT/PT connection terminals, and PCM600 configuration software)
• Product Series: ABB REG600 Series High-Voltage Generator Protection Relays (for 10MW~1000MW+ Synchronous Generators)
• Core Function: Detects electrical/mechanical faults in generators; executes selective protective actions (tripping, alarming); monitors generator operating parameters (current, voltage, frequency, power); supports remote configuration and data analysis via smart grid protocols
• Electrical & Protection Specifications:

  Parameter	Details	Performance Metrics
  Power Supply	- DC: 24V/48V/110V/220V ±20% - AC: 110V/230V ±15% (50Hz/60Hz)	Compatible with global power plant DC/AC systems
  Input Signals	- Current Inputs (CT): 4× 0~5A AC (for phase current, neutral current, differential current) - Voltage Inputs (PT): 4× 0~100V AC (for phase voltage, line voltage, residual voltage) - Temperature Inputs: 8× RTD (PT100/PT1000, for stator/rotor temperature) - Digital Inputs: 16× dry contacts (for breaker status, generator start/stop signals)	CT accuracy class: 0.2S; PT accuracy class: 0.1
  Protection Functions	- Electrical Protection: Overcurrent (50%~200% In), Overvoltage (105%~150% Un), Undervoltage (50%~90% Un), Overfrequency (51~60Hz), Underfrequency (40~49Hz), Differential Protection (IΔ>5% In), Earth Fault Protection (3I0>5% In) - Mechanical Protection: Rotor Overspeed (103%~120% rated speed), Stator Overheating (120℃~150℃), Bearing Temperature High (80℃~110℃) - Control Functions: Automatic Voltage Regulation (AVR) interface, Generator Synchronization Check	Protection operation time: ≤50ms (for short-circuit faults); Selectivity: ≥99.5% (no false tripping)
  Output Signals	- Relay Outputs: 8× SPDT (10A AC 250V, for breaker tripping, alarm activation) - Analog Outputs: 4× 4~20mA DC (for power, current, voltage monitoring) - Digital Outputs: 8× open-collector (for status signaling)	Output contact life: 100,000 operations (rated load)

• Communication & Mechanical Specifications:
  • Communication Protocols: Built-in IEC 61850 (GOOSE, MMS), Modbus RTU/TCP, DNP3.0; Optional IEC 60870-5-103
  • Communication Interfaces: 2× Ethernet (100Mbps, RJ45), 1× RS485, 1× USB (for local configuration)
  • Enclosure Type: Metal cabinet (IP40 front panel; IP20 rear terminals); Panel-mounted
  • Dimensions (W×H×D): 144mm × 216mm × 200mm (fits standard 19-inch rack with adapter)
  • Mounting: Panel-mounted (cutout size: 138mm × 210mm) or 19-inch rack-mounted (with optional kit)
  • Weight: Approximately 3.5kg
  • User Interface: 3.5-inch color LCD display; 8 navigation buttons; LED indicators (power, run, fault, communication)
• Environmental Ratings:
  • Operating Temperature Range: -25℃~+70℃ (-13℉~158℉)
  • Storage Temperature Range: -40℃~+85℃ (-40℉~185℉)
  • Humidity Tolerance: ≤95% RH (non-condensing, 40℃; suitable for power plant control rooms)
  • EMC Immunity: Compliant with IEC 61000-6-2 (industrial environment); ESD: ±8kV (contact), ±15kV (air); Surge: ±4kV (line-line)
  • Vibration Resistance: 10~500Hz, 1g acceleration (IEC 60068-2-6; no protection function loss)
• Compliance Standards: IEC 60255 (protective relays), IEC 61850 (smart grid communication), IEEE C37.20.1 (metal-enclosed switchgear), CE, UL 508, RoHS, IEC 61508 (SIL 3 capable)

2. Key Features

• Comprehensive Protection Coverage: Integrates 20+ electrical and mechanical protection functions (e.g., differential protection, overspeed protection, stator overheating protection) in a single device—eliminates the need for multiple discrete relays, reducing system complexity and cabinet space in power plants.
• High Protection Accuracy: CT/PT input accuracy classes (0.2S/0.1) and ≤50ms fault response time ensure precise detection of minor anomalies (e.g., 5% overcurrent) and fast action to prevent generator insulation damage or rotor burnout.
• Smart Grid Compatibility: Built-in IEC 61850 protocol (GOOSE for fast signal transmission, MMS for data monitoring) enables seamless integration with smart grids—supports remote protection setting adjustment, fault data upload, and real-time status monitoring via grid management centers.
• SIL 3 Safety Compliance: Meets IEC 61508 SIL 3 requirements, making it suitable for safety-instrumented systems (SIS) in critical power generation processes (e.g., nuclear power plant auxiliary generators, large thermal power plant main generators)—ensures ultra-low failure rates (<10 FIT) for risk mitigation.
• Advanced Data Logging & Diagnostics: 1GB internal memory stores 1000+ fault records (waveforms, timestamps, parameter values) and 1 year of operating data; PCM600 software enables post-fault analysis and predictive maintenance (e.g., stator temperature trend monitoring)—reduces troubleshooting time by 40%.
• Redundant Design: Optional dual power supply (DC/AC) and redundant communication ports (Ethernet/RS485) ensure operation continuity during single-point failures—critical for uninterrupted power generation in base-load power plants.
• Wide Generator Compatibility: Supports 10MW~1000MW+ synchronous generators (thermal, hydro, gas turbine, renewable energy storage)—adapts to diverse generator ratings via software configuration, no hardware modifications required.

3. Application Fields

• Large-Scale Power Plants: Primary application—main generator protection:
  • Thermal Power Plants: Protects 300MW~1000MW steam turbine generators; differential protection detects stator winding short circuits, while overfrequency protection prevents rotor damage during grid load shedding—integrates with 800xA DCS for centralized monitoring of generator power output (MW/Mvar).
  • Hydropower Stations: Safeguards 50MW~500MW hydro generators; rotor overspeed protection (110% rated speed) triggers during sudden load loss (e.g., turbine gate failure), and earth fault protection detects insulation degradation in underwater stator windings.
• Gas Turbine & Combined Cycle Plants: Protects fast-start generators:
  • Gas Turbine Generators: Shields 10MW~200MW gas turbine generators from transient overcurrent (during startup) and overvoltage (during grid connection); IEC 61850 GOOSE protocol enables <100ms breaker tripping, preventing damage from short circuits.
  • Combined Cycle Power Plants: Coordinates protection of heat recovery steam generator (HRSG) auxiliary generators; temperature inputs monitor bearing temperature, and undervoltage protection ensures stable operation during grid voltage dips.
• Renewable Energy & Storage Systems: Protects grid-connected generators:
  • Wind/Solar Storage Generators: Safeguards 10MW~100MW battery storage system generators; underfrequency/overfrequency protection mitigates grid frequency fluctuations, and overcurrent protection prevents damage from inverter faults—communicates with grid via IEC 61850 for grid code compliance.
  • Biomass Power Plants: Protects 5MW~50MW biomass-fired generators; stator overheating protection monitors winding temperature (via PT100 RTDs) during variable fuel quality operation, ensuring long-term insulation life.
• Industrial 自备电站 (Captive Power Plants): Protects on-site generators:
  • Steel Mills & Refineries: Shields 20MW~100MW 自备 generators from overloading (during peak production) and undervoltage (during plant equipment startup); relay outputs trip non-critical loads to maintain generator stability, avoiding production downtime.

The structure and details of the product：

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