Description
The ABB 2UBA002322R0009 is a factory-assembled DC-link capacitor plate (capacitor bank assembly) designed for use in the inverter section of ABB ACS580MV (Medium Voltage Drive, 200–6900 kW) and certain ACS2000 drive families. It consists of multiple high-energy aluminum electrolytic capacitors mounted on a rigid aluminum backing plate with integrated copper busbars, pre-charge/discharge resistors, and fuse links. The assembly smooths the rectified DC bus voltage, absorbs regenerative energy, and filters PWM-induced ripple current from the inverter IGBTs/SCRs—making it a mission-critical power-component spare for MV drive preventive maintenance or corrective replacement.h2 Application ScenariosConsider a mining concentrator plant where a 3.3 kV ABB ACS580MV drive controls a 2.5 MW ball-mill main motor. After 10+ years of service the drive begins logging intermittent “DC Bus Over/Under Voltage” alarms and the capacitor-temperature supervision indicates elevated case-heating trends—classic signs of electrolytic-capacitance drift and ESR increase. Rather than scheduling a full power-section rebuild, the electrical team procures a matched ABB 2UBA002322R0009 capacitor plate assembly. During a planned outage the inverter compartment is isolated, the DC-link is discharged (confirmed < 50 V DC), the old plate is unbolted from its standoffs, busbar connections undone, and the new 2UBA002322R0009 is installed with fresh hardware torque to spec. Post-installation the drive’s capacitor-health monitor shows normal ESR and temperature; DC-bus ripple is well within limits. This scenario illustrates the 2UBA002322R0009‘s key role: it is the targeted, cost-effective spare that restores DC-link integrity and extends MV drive service life without replacing the entire inverter cubicle.h2
Parameter
| Main Parameters | Value/Description |
|---|---|
| Product Model | 2UBA002322R0009 |
| Manufacturer / Series | ABB / ACS580MV & ACS2000 Medium Voltage Drive Series |
| Product Category | DC-Link Capacitor Plate Assembly (Capacitor Bank with Busbars) |
| Typical Capacitance (Total) | ≈ 2 × 9000 µF – 2 × 13500 µF (depends on drive rating / voltage class — verify against nameplate of removed unit) |
| Rated DC Voltage | 900 V DC / 1100 V DC / 1600 V DC (matched to ACS580MV DC-link level — confirm before ordering) |
| Ripple Current Rating | ≥ 80–120 A rms @ 85 °C (total for assembly, distributed across parallel caps) |
| Components Included | Electrolytic capacitors, pre-charge/discharge resistor network, fuse links, copper busbars, mounting brackets & insulating hardware |
| Discharge Time (to ≤ 60 V) | < 5 min (via integral discharge resistor, typical) |
| Insulation Resistance | > 10 GΩ @ 25 °C (between terminals & plate / ground) |
| Operating Temp. Range | -25 °C to +85 °C (capacitor element rating; derate above 65 °C per IEC 60384-4) |
| Mounting | Bolt-on to inverter-section standoffs inside ACS580MV cubicle (4× M8/M10 studs typical) |
| Dimensions (L×W×H) | ≈ 480 × 320 × 150 mm (reference — varies by drive kW rating) |
| Weight | ≈ 12–18 kg (depending on capacitance / voltage version) |
*Note: The exact capacitance, voltage rating, busbar hole pattern, and number of capacitor cans must be verified by comparing the removed assembly’s ABB label / drawing number with the 2UBA002322R0009 designation before purchase.h2 Technical Principles and Innovative ValuesThe 2UBA002322R0009 is engineered as a matched, pre-engineered energy-storage subsystem for medium-voltage drives.
- Innovation Point 1 – Matched-Set Parallel Capacitors with Low-ESR Design: The assembly uses multiple screw-terminal electrolytic capacitors selected for identical ESR and capacitance tolerance (< ±10 %). This ensures even current sharing among parallel elements, minimizes hot-spots, and extends service life—critical given the high ripple currents generated by multi-level NPC/H-bridge inverter topologies in the ACS580MV.
- Innovation Point 2 – Integrated Pre-Charge & Passive Discharge Network: Each 2UBA002322R0009 includes a pre-charge resistor chain (limits inrush when the DC-link is first energized) and a passive discharge resistor that safely bleeds the DC-bus to < 50 V within minutes after power removal. This protects both the rectifier diodes and service personnel, and eliminates the need for separately specified external bleed resistors.
- Innovation Point 3 – Rigid Busbar & Vibration-Resistant Mounting: The capacitors are rigidly clamped to an aluminum plate with tin-plated copper busbars pre-formed to match the inverter-section terminal layout. Stainless-steel hardware with vibration-damping washers prevents loosening in high-vibration environments (e.g., cement, mining). The plate is designed for tool-clearance access so that torque-critical busbar bolts can be checked during periodic maintenance.
