ABB GRID BREAKER UNIT GBU72 3BHB030310R0001

Description

Product Basic Information ABB GRID BREAKER UNIT GBU72 3BHB030310R0001

Product Parameters ABB GRID BREAKER UNIT GBU72 3BHB030310R0001

• Device type: Grid breaker from the GBU72 series, model 3BHB030310R0001.
• Electrical parameters:
  • Rated voltage: 72 kV;
  • Rated current: 2000 A;
  • Maximum breaking current: 40 kA (for 3 seconds);
  • Insulation type: SF₆ gas insulation, with a pressure of 0.5 MPa at 20°C.
• Protection and switching functions:
  • Switching time: ≤5 grid cycles (100 ms at 50 Hz);
  • Protection types: Overload, short circuit, asymmetric operation, overvoltage protection;
  • Condition monitoring: SF₆ pressure sensors, temperature sensors, contact condition sensors;
  • Control: Electromechanical with manual backup drive.
• Communication and interfaces:
  • Protocols: IEC 61850 (for SCADA integration), Modbus RTU;
  • Interfaces: Ethernet (100BASE-TX), RS-485;
  • Status signals: Discrete outputs for transmitting faults and operating modes.
• Dimensions and operating conditions:
  • Dimensions: 1800 mm (width) × 1200 mm (depth) × 2200 mm (height);
  • Enclosure protection class: IP54 (dust and water jet protection);
  • Temperature range: -30°C to +50°C;
  • SF₆ service life: ≥15 years without refilling.

Advantages and Features ABB GRID BREAKER UNIT GBU72 3BHB030310R0001

• High-reliability switching performance: A breaking time of ≤100 ms prevents prolonged short circuits, minimizing damage to grid equipment (especially critical for wind farms with variable loads).
• Deep integration with digital systems: Support for the IEC 61850 protocol enables data transmission to SCADA and cloud platforms, facilitating remote monitoring and fault prediction.
• Gas insulation protection: SF₆ pressure sensors automatically alert to leaks, ensuring operational safety and reducing the risk of failures due to insulation loss.
• Versatile application: Compatibility with various protection systems and operation across a wide temperature range make it suitable for substations in northern regions and tropical areas.

Application Cases ABB GRID BREAKER UNIT GBU72 3BHB030310R0001

1. Wind farms: Isolating groups of wind turbines in grid nodes—the breaker quickly responds to overloads caused by sudden wind speed changes, protecting generators from damage.
2. 72 kV substations: Protecting transformers and transmission lines—the ABB GRID BREAKER UNIT GBU72 3BHB030310R0001, with IEC 61850 support, integrates with SCADA systems to provide real-time grid status data to operators.
3. Industrial power systems: Managing power flow in large factories (e.g., metallurgical, chemical plants)—its 2000 A rated current handles high-power loads, and asymmetric protection prevents motor drive failures.

Comparison with Competitors

Selection Suggestions and Precautions

Selection Suggestions

• High-load grids: For wind farms and industrial power systems, the ABB GRID BREAKER UNIT GBU72 3BHB030310R0001’s 2000 A rated current and 40 kA breaking capacity provide reliable protection.
• Digital monitoring systems: In substations with SCADA, its IEC 61850 support simplifies integration and remote control.
• Extreme climates: Its wide temperature range ensures stable operation in northern or tropical regions.

Precautions

• SF₆ pressure control: Check gas pressure monthly and seal leaks promptly—low pressure reduces insulation performance.
• Switching tests: Test the operating mechanism annually (including manual backup mode)—ensure reliability during faults.
• Firmware updates: Use official updates via ABB service—latest versions enhance protection and compatibility with new protocols.
• Cable shielding: Use shielded cables for SCADA communication—reduce electromagnetic interference on data transmission.

3BHB030310R0001