The GCC960C102 (Part Numbers 3BHE033067E0102 and 3BHE033068P106) is a high-performance control module integrated into the ABB UNITROL 6000 and MEGADRIVE-LCI power electronics platforms. This module acts as a specialized communication and logic controller, often serving as a gate-driver interface or a high-speed signal processor. It is designed to bridge the gap between the central processor and the power semiconductor stacks (IGBTs/IGCTs), ensuring synchronized firing and real-time monitoring of the power conversion process.
Technical Datasheet
Product Specifications
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Model Number: GCC960C102
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Primary Part Number: 3BHE033067E0102
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Secondary Part Number: 3BHE033068P106
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Module Type: Gate Control / Communication Interface
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Input Voltage: 24V DC (nominal)
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Communication: Fiber optic (ST or SMA connectors) for high-voltage isolation
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Logic Processing: FPGA-based high-speed timing control
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Operating Temperature: -5°C to +70°C
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Dimensions: 265mm x 195mm x 45mm
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Weight: 0.95 kg
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Country of Origin: Switzerland
Application Areas
The GCC960C102 is essential for large-scale power infrastructure. It is primarily used in Excitation Systems for multi-megawatt generators and in Static Frequency Converters (SFC) used for grid-to-rail power conversion or pumped-storage hydro plants. It is specifically engineered to handle the high electromagnetic interference (EMI) found near high-power thyristor and transistor bridges.
Product Instructions
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Safety Verification: This module is typically located near high-voltage power modules. Ensure the system is locked out, tagged out, and all capacitors have been verified as discharged before attempting replacement.
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Electrostatic Discharge (ESD): Always use a grounded wrist strap. The FPGA and optical components on the GCC960C102 are highly sensitive to static electricity.
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Fiber Optic Link: The module relies on fiber optics for firing pulses. Ensure that the optical fibers are clean and not kinked. Misaligned or dirty fibers can cause “misfiring” of the power semiconductors, leading to catastrophic failure.
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Module Seating: Slide the module into the subrack card guide and ensure the backplane connector is fully mated. Tighten the front panel screws to provide a consistent ground reference and vibration resistance.
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Initialization: Once powered, check the internal diagnostic LEDs. The “Link” LED must be active to indicate communication with the master controller (e.g., KUC711). If the “Fault” LED is red, the module may have detected a gate-driver supply failure.
Q&A: Frequently Asked Questions
What is the difference between 3BHE033067 and 3BHE033068? Typically, the 3BHE033067 number refers to the complete assembled module, while 3BHE033068 often refers to the printed circuit board (PCB) or a specific sub-assembly. For ordering spare parts, the 3BHE033067E0102 is the definitive identifier for the whole unit.
Can this module be used in UNITROL 5000 systems? The GCC960 series is primarily designed for the newer UNITROL 6000 architecture. While some overlap exists, check the system compatibility matrix, as the communication protocols and physical dimensions may differ from the older UNITROL 5000 modules.
How does the module handle high-voltage isolation? Isolation is achieved through the use of fiber optic communication. By using light instead of electrical signals to transmit data to the power stacks, the control electronics are completely isolated from the kilovolt-level potentials found in the power stage.
What should I do if the ‘Status’ LED is orange? An orange or amber LED usually indicates a non-critical warning or a “Standby” mode. If the module is in a redundant system, it may mean the module is healthy but currently in a follower/passive state.
Recommended Similar Models
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ABB GCC960C101 (Standard variant)
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ABB GCO960 (Optical Link Module)
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ABB 3BHE022293R0101 (Excitation Control Component)
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ABB KUC711 (Master Controller for UNITROL 6000)
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ABB UNS0885A (High-speed Interface Board)
