ABB GRID BREAKER UNIT GBU72 3BHE031197R0001

Description

General Information about the product ABB GRID BREAKER UNIT GBU72 3BHE031197R0001

Technical Parameters of ABB GRID BREAKER UNIT GBU72 3BHE031197R0001

• Device type: Control and protection unit for high-voltage circuit breakers (up to 72 kV).
• Electrical characteristics:
  • Maximum network voltage: 72 kV;
  • Maximum breaking current: 4000 A;
  • Fault tripping time: ≤2 network cycles (≈33 ms for 50 Hz).
• Control and protection:
  • Protection types: Overload, short circuit, earth fault, phase imbalance protection;
  • Settings: Configurable parameters via ABB PCM600 software;
  • Control logic: Programmable logic supporting IEC 61131-3.
• Communication interfaces:
  • Ethernet: 10/100BASE-TX with support for IEC 61850 (MMS, GOOSE), Modbus TCP protocols;
  • Serial port: RS-485 for local configuration.
• Supported standards and certifications:
  • IEC 62271-203 (high-voltage circuit breakers);
  • IEC 61850 (power system communications);
  • IEC 60255 (protective relays).
• Reliability and protection:
  • Mean Time Between Failures (MTBF): ≥1,500,000 hours;
  • Enclosure protection class: IP54 (dust and water jet protection);
  • EMC immunity: Complies with IEC 61000-4-5 (2 kV impulse on lines, 4 kV on ground).
• Operating conditions:
  • Ambient temperature: -30 °C to +70 °C;
  • Maximum relative humidity: 95% (with short-term condensation);
  • Power supply: 110–220 V AC/DC (redundant with automatic).

Advantages and Features of ABB GRID BREAKER UNIT GBU72 3BHE031197R0001

• High-speed protection: Tripping time of ≤2 network cycles prevents equipment damage during short circuits — critical for high-voltage power plants.
• IEC 61850 integration: Compatibility with modern power system communication protocols simplifies integration into digital substations and cloud-based monitoring systems.
• Extreme durability: Operation in temperatures from -30 to +70 °C and IP54 protection make the unit suitable for outdoor use (e.g., substations in northern regions or deserts).
• Redundant power supply: Two independent power lines with automatic 切换 ensure uninterrupted operation even if one source fails — essential for critical power grids.

Application Examples of ABB GRID BREAKER UNIT GBU72 3BHE031197R0001

1. Medium-voltage substations (35–72 kV): Controlling and protecting circuit breakers in urban power supply networks — the unit quickly isolates faulty sections during short circuits, preventing widespread power outages.
2. Geothermal power plants: Protecting generator sets — the ABB GRID BREAKER UNIT GBU72 3BHE031197R0001 monitors current and voltage at generator outputs, shutting them down during overloads to prevent damage.
3. Industrial power systems (metallurgical plants): Managing distribution networks — the unit coordinates the operation of circuit breakers in high-voltage motor circuits, ensuring stability during sudden load fluctuations.

Comparison with Competitors

Selection Recommendations and Precautions

Selection Recommendations

• High-voltage networks (35–72 kV): For substations and power plants within this voltage range, the ABB GRID BREAKER UNIT GBU72 3BHE031197R0001 ensures full compatibility and reliability.
• Extreme climatic conditions: In northern regions or deserts, its wide temperature range (-30/+70 °C) and IP54 protection guarantee stability.
• Digital substations: In projects using IEC 61850, its support for modern protocols simplifies integration with cloud-based monitoring systems.

Precautions

• Regular diagnostics: Perform checks via ABB PCM600 software quarterly — verify protection settings, communication status, and operation logs.
• Voltage surge protection: Install additional filters on the power supply line to prevent malfunctions during voltage spikes.
• Spare parts replacement: Monitor the condition of contacts and switching relays, planning replacements every 5 years to maintain tripping time at ≤2 cycles.
• Software updates: Update firmware via a closed network using ABB’s digital signatures to prevent unauthorized version installations.