3BHE055094R0002 GBU72
3BHE055094R0002 GBU72 Industrial High-Power Rectifier Bridge Module—— A dedicated power electronic component under ABB’s industrial rectifier series, categorized as a “three-phase full-wave bridge rectifier + robust thermal design” module. It is used in medium-voltage drives, power supplies, and energy storage systems to convert AC to DC.
2.2 Product Description
The 3BHE055094R0002 GBU72 module solves challenges in industrial rectification scenarios, such as high current-induced heat accumulation, low conversion efficiency, and poor reliability in harsh conditions. Its core functions are outlined below:
- High-Efficiency AC-DC Rectification: Adopts a three-phase full-wave bridge topology with 6 high-performance silicon rectifier diodes (GBU series), enabling efficient conversion of 380V-1140V AC to stable DC. It achieves a rectification efficiency of ≥98% at rated load, minimizing energy loss in power conversion chains.
- Robust Thermal Management: Features a Direct Bonded Copper (DBC) substrate with high thermal conductivity (180W/m·K) and a hermetic aluminum alloy package, reducing thermal resistance (Rth(j-c) ≤0.08℃/W). It supports forced air cooling (air velocity ≥5m/s) or liquid cooling, ensuring junction temperature stays below 125℃ even at full load.
- Industrial-Grade Reliability: Designed with overcurrent and overtemperature protection (via external monitoring compatibility). The rectifier diodes have a surge current tolerance of 10× rated current (10ms), withstanding short-term load spikes. It complies with industrial EMC standards, resisting electromagnetic interference from nearby drives or motors.
- System Compatibility: With standardized pinout and mounting dimensions, it seamlessly integrates with ABB ACS 800/880 medium-voltage drives and third-party industrial power supplies. It is suitable for applications like DC motor drives, battery charging systems, and auxiliary power units in steel, mining, and petrochemical industries.
This module is a critical component in industrial power conversion systems, providing stable, efficient DC power for heavy-duty loads.
2.3 Product Parameters (Key Technical Indicators)
| Parameter Category | Specific Specifications |
|---|---|
| Rectifier Topology | Three-phase full-wave bridge (6 silicon rectifier diodes) |
| Rated Input Voltage | 380V-1140V AC (three-phase, 50/60Hz) |
| Rated Output Current | 72A (continuous DC output, 25℃ ambient temperature) |
| Peak Surge Current | 720A (10ms, non-repetitive; IEC 60947-1 standard) |
| Forward Voltage Drop | ≤1.1V per diode (at rated current, 25℃) |
| Rectification Efficiency | ≥98% (at rated load, 50Hz input) |
| Reverse Voltage Rating | 1200V DC (per diode; repetitive peak reverse voltage) |
2.4 Product Specifications (Physical & Environmental)
| Specification Category | Specific Parameters |
|---|---|
| Physical Dimensions | 180mm (length) × 120mm (width) × 50mm (height) (including heat dissipation base) |
| Weight | Approximately 1.2kg (diode chips, DBC substrate, and aluminum package) |
| Mounting Method | Bolt fixing (4×M5 bolts, torque 8-10N·m); mounting hole spacing: 150mm × 90mm; requires flat heat sink contact (pressure ≥0.3MPa) |
| Protection Level | IP20 (module body); IP40 (with optional terminal cover) |
| Operating Temperature | Ambient: -40℃~+85℃; Diode junction: -55℃~+150℃ |
| Storage Temperature | -55℃~+125℃ (no corrosive gases, low dust) |
| Thermal Resistance | Rth(j-c) ≤0.08℃/W (junction to case); Rth(c-s) ≤0.1℃/W (case to heat sink) |
| Certifications | CE (EN 60947-1, EN 61000-6-2); UL 1558 (power electronic components); RoHS 2.0 |
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