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ABB GRID BREAKER UNIT GBU72 3BHE055094R0002

Product Parameters

  • Type: High-voltage grid breaker unit
  • Rated voltage: Up to 72.5 kV
  • Rated current: 2500 A (continuous), 40 kA (short-circuit interrupting current)
  • Operating mechanism: Spring-operated, with manual and electrical control options
  • Breaking time: ≤2 cycles (50 Hz)
  • Insulation level: LI 250 kV (lightning impulse), SI 145 kV (switching impulse)
  • Control voltage: 110/220 V DC
  • Protection features: Overcurrent, short-circuit, and earth fault protection
  • Communication protocols: IEC 61850, Modbus RTU
  • Enclosure rating: IP54 (for outdoor use)
  • Dimensions: 1200 × 800 × 600 mm (width × height × depth)
  • Weight: Approximately 500 kg
  • Compatibility: ABB Relion® protection relays, SCADA systems, and grid management platforms.
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Description

ABB GRID BREAKER UNIT GBU72 3BHE055094R0002 (product link: [insert link]) — a high-performance grid breaker unit from ABB, designed to ensure safe and reliable disconnection of electrical systems in power generation, transmission, and distribution networks. ABB GRID BREAKER UNIT GBU72 3BHE055094R0002 is engineered to handle high-voltage applications, making it a critical component in utilities, industrial plants, and renewable energy facilities where grid stability and fault protection are paramount.

Product Description

ABB GRID BREAKER UNIT GBU72 3BHE055094R0002 is a robust grid breaker unit that combines advanced switching technology with intelligent monitoring capabilities. It is designed to interrupt electrical currents during abnormal conditions (such as short circuits or overloads) and isolate faulty sections of the grid to prevent widespread outages. Equipped with a high-speed operating mechanism, ABB GRID BREAKER UNIT GBU72 3BHE055094R0002 can disconnect circuits in milliseconds, minimizing damage to equipment and ensuring operator safety. The unit integrates seamlessly with ABB’s protective relays and control systems, enabling real-time data transmission for remote monitoring and diagnostics. ABB GRID BREAKER UNIT GBU72 3BHE055094R0002 features a modular design, allowing for easy maintenance and upgrades without disrupting grid operations. Constructed with durable materials (such as stainless steel and high-grade insulators), it withstands harsh environmental conditions, including extreme temperatures, humidity, and vibration. Certified to IEC 62271 and ANSI standards, this grid breaker unit ensures compliance with global safety and performance regulations.

Product Parameters

  • Type: High-voltage grid breaker unit
  • Rated voltage: Up to 72.5 kV
  • Rated current: 2500 A (continuous), 40 kA (short-circuit interrupting current)
  • Operating mechanism: Spring-operated, with manual and electrical control options
  • Breaking time: ≤2 cycles (50 Hz)
  • Insulation level: LI 250 kV (lightning impulse), SI 145 kV (switching impulse)
  • Control voltage: 110/220 V DC
  • Protection features: Overcurrent, short-circuit, and earth fault protection
  • Communication protocols: IEC 61850, Modbus RTU
  • Enclosure rating: IP54 (for outdoor use)
  • Dimensions: 1200 × 800 × 600 mm (width × height × depth)
  • Weight: Approximately 500 kg
  • Compatibility: ABB Relion® protection relays, SCADA systems, and grid management platforms.

Advantages and Features

  • High-speed operation: ABB GRID BREAKER UNIT GBU72 3BHE055094R0002 disconnects circuits in ≤2 cycles, reducing fault duration and minimizing equipment damage.
  • Intelligent integration: Supports IEC 61850 for seamless communication with smart grid systems, enabling remote monitoring and predictive maintenance.
  • Robust construction: Designed to withstand extreme environmental conditions, ensuring reliability in outdoor and industrial settings.
  • Modular design: Facilitates easy maintenance and component replacement, reducing downtime during servicing.
  • Comprehensive protection: Built-in safeguards against overloads, short circuits, and earth faults enhance grid stability and operator safety.

Application Cases in Industries

  • Power transmission: Used in 72.5 kV substations to protect transformers and transmission lines from faults, ensuring uninterrupted power flow between generation facilities and distribution networks.
  • Renewable energy: Integrated into wind and solar farms to connect generation systems to the main grid, with ABB GRID BREAKER UNIT GBU72 3BHE055094R0002 providing rapid disconnection during voltage fluctuations.
  • Industrial plants: Protects high-voltage equipment (such as motors and converters) in steel mills, refineries, and manufacturing facilities, preventing production disruptions from electrical faults.

Comparison with Competing Products

Compared to grid breaker units from Siemens (3AH3) and Schneider Electric (MVnex), ABB GRID BREAKER UNIT GBU72 3BHE055094R0002 offers faster breaking times (≤2 cycles vs. 3–4 cycles) and superior compatibility with ABB’s ecosystem of protection relays and control systems. Its modular design also reduces maintenance costs, making it a more cost-effective choice for long-term operations.

Selection Recommendations

ABB GRID BREAKER UNIT GBU72 3BHE055094R0002 is ideal for 72.5 kV applications requiring high-speed fault interruption and smart grid integration (utilities, renewable energy, industrial plants). For higher voltage requirements (up to 145 kV), consider the ABB GRID BREAKER UNIT GBU145 series.

Precautions

  • Install ABB GRID BREAKER UNIT GBU72 3BHE055094R0002 in accordance with ABB’s installation guidelines, ensuring proper clearance from live components and compliance with local electrical codes.
  • Regularly inspect the operating mechanism and insulation components (every 6 months) to detect wear or degradation, especially in dusty or humid environments.
  • Test the breaker’s tripping and closing functions periodically using calibrated equipment to verify performance under load conditions.
  • Ensure the control voltage supply is stable and protected against surges to prevent malfunctions in the operating mechanism.
  • Only trained personnel should perform maintenance or repairs, following lockout-tagout procedures to avoid electrical hazards.

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