
Product Description
ABB S-073N ALU Phase Module Rack - High-Voltage Inverter Power Electronics
The ABB 3BHB009884R5211 S-073N ALU Phase Module Rack is a precision-engineered power electronics assembly for ACS2000 series high-voltage inverters. This Swiss-manufactured aluminum rack houses critical phase control circuitry, enabling precise motor speed regulation and energy-efficient operation in medium to high-voltage industrial applications up to several megawatts.
Technical Specifications
| Parameter | Value |
|---|---|
| Part Number | 3BHB009884R5211 |
| Type Designation | S-073N ALU Phase Module Rack |
| Compatible Platform | ABB ACS2000 High-Voltage Inverters |
| Voltage Class | Medium to High Voltage (2.3-11 kV typical) |
| Construction Material | Aluminum alloy for thermal management |
| Operating Temperature | -40°C to +85°C |
| Switching Technology | High-frequency IGCT/IGBT based |
| Weight | 10 kg (22 lbs) |
| Cooling Method | Forced air or liquid cooling (system-dependent) |
| Country of Origin | Switzerland |
| HS Code | 85044090 |
Key Features
- Modular Architecture: Rack-mounted design enables easy installation and field replacement in ACS2000 converter cabinets
- Aluminum Construction: Lightweight yet robust housing with excellent thermal conductivity for reliable heat dissipation
- Wide Temperature Range: -40°C to +85°C operation supports installation in harsh industrial environments
- High Short-Circuit Withstand: Engineered to survive fault conditions without catastrophic failure
- Precision Phase Control: Advanced switching algorithms deliver smooth motor torque and minimal harmonic distortion
- Swiss Quality: Manufactured to ABB's stringent quality standards with full traceability
Industrial Applications
Mining & Minerals Processing
Powers large grinding mills, SAG mills, and conveyor systems in copper, gold, and iron ore operations. The module's robust design withstands vibration and temperature extremes in underground and open-pit environments.
Oil & Gas
Drives high-power compressors and pumps in pipeline booster stations, LNG facilities, and offshore platforms. The wide temperature range supports Arctic and desert installations.
Cement & Steel Production
Controls kiln drives, ball mills, and rolling mill motors in cement plants and steel mills. High short-circuit capability protects against frequent load transients.
Marine Propulsion
Enables variable-speed control of main propulsion motors and azimuth thrusters in cruise ships, tankers, and icebreakers. Compact design fits space-constrained engine rooms.
Power Generation
Regulates generator excitation and auxiliary drives in thermal, hydro, and renewable energy plants. Precision control optimizes grid synchronization and power quality.
System Integration & Function
Role in ACS2000 Inverter
The S-073N ALU rack serves as the mechanical and electrical foundation for one phase leg of the ACS2000's multi-level converter topology. It houses:
- IGCT or IGBT power semiconductors with gate driver boards
- DC link capacitors for energy storage and voltage smoothing
- Snubber circuits for dv/dt and di/dt protection
- Current and voltage sensors for real-time feedback
- Thermal monitoring and protection circuits
Electrical Interface
The module connects to the inverter's DC bus via high-current busbars (typically 1000-3000A rating) and to the motor via shielded AC output cables. Control signals from the main controller arrive via fiber optic links for noise immunity.
Cooling Requirements
Forced air cooling is standard for lower power ratings (<5 MW), while liquid cooling (water or glycol) is used in higher power systems. The aluminum rack features integrated cooling channels and mounting provisions for heatsinks or cold plates.
Installation & Replacement
Safety Precautions
WARNING: This module operates at lethal voltages (up to 11 kV DC). Only qualified electrical personnel with high-voltage training should perform installation or maintenance. Follow NFPA 70E arc flash safety protocols.
Replacement Procedure
- De-energize inverter at main circuit breaker and apply lockout/tagout
- Wait minimum 30 minutes for DC bus capacitor discharge (verify <50 VDC with rated meter)
- Ground DC bus bars using portable grounding assembly
- Disconnect AC output cables, DC bus connections, and fiber optic control links
- Remove mounting bolts securing rack to cabinet frame
- Carefully extract module using lifting equipment (10 kg weight)
- Install replacement rack, torque all connections per manual specifications
- Perform insulation resistance test (>100 MΩ @ 1000 VDC)
- Re-energize and conduct no-load functional test
Common Issues & Diagnostics
| Symptom | Possible Cause | Solution |
|---|---|---|
| Inverter trips on overcurrent | Failed IGCT/IGBT in phase module | Inspect semiconductors for short circuit, replace module if damaged |
| Excessive vibration or noise | Loose mounting hardware | Re-torque all bolts to specification, check for mechanical resonance |
| Overtemperature alarm | Insufficient cooling airflow | Clean air filters, verify cooling fans operational, check for blocked vents |
| Unbalanced phase currents | Degraded capacitors or sensors | Measure capacitance values, replace if <80% of nominal, calibrate sensors |
Preventive Maintenance
| Interval | Task |
|---|---|
| Monthly | Visual inspection for physical damage, verify cooling system operation |
| Quarterly | Thermal imaging scan to detect hot spots, check mounting bolt torque |
| Annually | Insulation resistance test, capacitor ESR measurement, contact resistance check |
| Every 5 Years | Replace electrolytic capacitors (preventive), update firmware if available |
Quality & Warranty
All ABB S-073N ALU phase modules undergo rigorous factory testing:
- High-voltage isolation test (2× rated voltage + 1000V for 1 minute)
- Thermal cycling (-40°C to +85°C, 10 cycles)
- Vibration testing per IEC 60068-2-6
- Functional test at rated current and voltage
Warranty: 24 months from shipment date, covering defects in materials and workmanship. Extended service agreements available for critical applications.