ABB GCD207B101 3BHE024642R0101

• Power Supply:
  • Voltage: 24 V DC ±15% or 110/220 V AC ±10% (dual-input option)
  • Power Consumption: ≤ 25 W (full-load operation)
• Environmental Ratings:
  • Operating Temperature: -20°C to +70°C
  • Storage Temperature: -40°C to +85°C
  • Humidity: ≤ 95% RH (non-condensing)
  • Protection Level: IP20 (cabinet-mounted, front panel)
• Isolation:
  • Galvanic isolation between power supply, input channels, output channels, and communication ports
  • Isolation Voltage: ≥ 3000 V AC (1 minute)
• Communication:
  • Interfaces: 1 x Ethernet (TCP/IP), 1 x RS485
  • Protocols: IEC 61850 (for substation automation), Modbus RTU/TCP, ABB Profinet (optional)
  • Data Update Rate: ≤ 100 ms (for critical parameters like voltage/current)
• Mechanical Details:
  • Mounting Type: 35 mm DIN rail mounting
  • Dimensions (W×H×D): 180 mm × 120 mm × 80 mm
  • Weight: Approximately 0.8 kg
• Certifications:
  • Compliance with IEC 60255 (protection relays), IEC 61850-3 (communication), IEC 61000-6-2 (EMC immunity), and CE standards

Functional Features

• Precise Generator Control:
  • Implements AVR (Automatic Voltage Regulator) logic to maintain stable generator terminal voltage, with voltage regulation accuracy ≤ ±0.5%.
  • Supports load sharing control (active/reactive power) for parallel operation of multiple generators, ensuring balanced power distribution.
  • Enables soft start/stop of generators to reduce mechanical and electrical shock during startup/shutdown cycles.
• Multi-Layer Protection Functions:
  • Overvoltage/Undervoltage Protection: Triggers alarm or trip when terminal voltage exceeds 115% or drops below 85% of rated value.
  • Overcurrent/Short-Circuit Protection: Activates fast trip (≤ 50 ms) to isolate the generator during short-circuit or overcurrent events.
  • Overfrequency/Underfrequency Protection: Responds to frequency deviations (e.g., >62 Hz or <48 Hz) to prevent turbine damage.
  • Over-temperature Protection: Monitors stator/rotor winding temperature and triggers cooling system activation or shutdown if thresholds are exceeded.
  • Loss of Excitation Protection: Detects excitation system failure and initiates protective actions to avoid generator damage.
• Real-Time Monitoring & Diagnostics:
  • Continuously collects and displays 50+ generator parameters (voltage, current, power, temperature, frequency) via a built-in LCD (128×64 pixels) or upper-level systems.
  • Provides self-diagnostic functions for module hardware (power supply, I/O channels, communication ports) and outputs fault codes/alerts for rapid troubleshooting.
• Flexible Configuration:
  • Allows customization of protection thresholds, control logic, and communication settings via ABB’s dedicated software (e.g., ABB Control Suite) or front-panel buttons.
  • Supports firmware updates via Ethernet to adapt to evolving system requirements without hardware replacement.
• High Reliability:
  • Adopts industrial-grade components with a mean time between failures (MTBF) of ≥ 100,000 hours.
  • Features anti-vibration design (compliant with IEC 60068-2-6) to withstand harsh conditions in power plants.

Application Scenarios

• Thermal Power Plants: Used to control and protect steam turbine generators, regulating parameters like steam flow (via governor control) and excitation current to ensure stable power output and prevent equipment damage from overheating or voltage fluctuations.
• Hydropower Plants: Deployed for hydro-turbine generators, managing load changes based on water flow and providing protection against overspeed (caused by sudden load loss) or underfrequency (due to insufficient water supply).
• Wind Power Farms: Integrated into wind turbine generators (WTGs), controlling reactive power compensation and protecting the generator from grid voltage surges or gust-induced overspeeds.
• Diesel Generator Sets (Backup Power): Applied in emergency diesel generators for data centers, hospitals, or industrial facilities, ensuring fast startup and stable voltage supply during grid outages, with protection against overload or fuel system failures.
• Industrial Cogeneration Systems: Used in combined heat and power (CHP) units for factories or commercial complexes, balancing electrical power generation and thermal energy supply while safeguarding the generator from process-related parameter deviations.