ABB 3BHE055094R0002 GBU72｜Control Cabinet｜

3BHE055094R0002 GBU72

Function
High voltage circuit breaker control (GBU core)
Control the opening and closing, interlocking, and status monitoring of 3.3kV/6kV vacuum circuit breakers on the control network side
Electrical isolation and safety interlocking between the high voltage side and control side to ensure operation and maintenance safety
Grid synchronization and integration
Three phase voltage/frequency/phase synchronization detection, achieving impulse free grid connection
Low Voltage Ride Through (LVRT): Maintain the power grid for 2 seconds without disconnecting when it drops to 20%
Power unit interface and driver
Provide power supply and control to the internal GBU72 power module (72A rectifier bridge+IGCT drive)
Fiber optic driven IGCT, μ s level switch, bidirectional power flow
System Communication and Coordination
Communicate with AC800PEC, PMI, HMI, and upper SCADA (Ethernet/Profibus/Fiber)
Full cabinet redundancy design, supporting hot plugging and automatic fault switching (≤ 12ms)

Protection and Diagnosis
Hardware speed protection+software diagnosis for overvoltage/overcurrent/short circuit/overheating/grounding faults
Temperature, humidity, and vibration monitoring inside the cabinet, IP20/IP54 protection

ABB 3BHE055094R0002 GBU72｜Control Cabinet｜