The ABB 3BHB004661R0001 KUC711AE is a high-performance medium-voltage rectifier unit designed for industrial drive systems, particularly within the ACS6000 multi-drive platform. This 12-pulse thyristor-based converter delivers 3.3kV AC input with ±1% voltage regulation, providing stable DC bus power for synchronous motor drives up to 25MW. The 3BHB004661R0001 KUC711AE features adaptive gate firing technology that maintains <3% current imbalance across parallel modules, crucial for metal rolling mill applications requiring torque consistency within ±0.5%.
As part of ABB’s Intelligent Drive System (IDS) architecture, this unit integrates harmonic mitigation filters reducing THDi to <5% at full load. The ABB 3BHB004661R0001 KUC711AE supports redundant cooling configurations with both air-to-water and air-to-air heat exchangers, achieving 98.3% efficiency even at 50°C ambient temperatures. Its modular design allows hot-swapping of power stacks during maintenance without system shutdown.
Technical Specifications
| Parameter Name | Parameter Value |
|---|---|
| Product Model | 3BHB004661R0001 KUC711AE |
| Manufacturer | ABB |
| Product Type | Medium Voltage Rectifier |
| Input Voltage | 3-phase 3300V AC ±10% |
| Output Power | 12MVA (continuous) |
| Switching Frequency | 500Hz (thyristor-controlled) |
| Efficiency | 98.3% @ full load |
| Cooling Method | Forced air + optional water cooling |
| THDi | <5% (with harmonic filter) |
| Enclosure | IP54 (NEMA 12 equivalent) |
| Operating Temp | -15°C to +55°C |
| Dimensions | 2000×800×2200mm |
| Weight | 3200kg |
| Certifications | CE, UL, IEC 61800-4 |
Key Features and Advantages:
Predictive maintenance: Embedded fiber-optic temperature sensors in thyristor stacks enable real-time thermal profiling. The ABB 3BHB004661R0001 KUC711AE predicts component lifespan with 95% accuracy through machine learning algorithms analyzing 200+ operational parameters.
Active redundancy: Parallel-connected thyristor bridges with automatic load balancing ensure <100ms failover during single-module faults. The patented DC bus pre-charge circuit prevents inrush currents exceeding 110% rated current during cold starts.
Cybersecurity hardened: Implements ABB Ability™ secure communication protocol with 256-bit encryption and role-based access control. The optical isolation between control and power circuits eliminates ground loop risks in electrically noisy environments.
Application Areas:
The ABB 3BHB004661R0001 KUC711AE is essential in:
- Metals industry: Main drives for continuous casting machines and hot strip mills
- Mining: Conveyor belt systems handling 10,000t/h ore throughput
- Oil & gas: Centrifugal compressor drives for LNG liquefaction
- Cement production: Raw mill drives with 20MN·m starting torque requirements
In steel plate rolling applications, this rectifier maintains ±0.2% speed regulation during rapid load changes. It enables 30% energy savings in mine hoisting systems through regenerative braking energy recovery.
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