Description
Unboxing & Hardware Overview
- Manufacturer & Architecture: ABB (Motion / Industrial Variable-Frequency Drives Division)
- Part Number / Model: 3AXD50000045743 (Catalog Designation: DC Capacitor Bank Module, Frame R8I, 400/500V)
- Product Type: High-Capacity Electrolytic/Film DC Link Capacitor Bank Assembly
- Physical Dimensions: Heavy-duty modular internal power assembly designed for frame size R8I inverter modules
- Estimated Shipping Weight: ~15.0 to 22.0 lbs (6.8 to 10.0 kg) enclosed in industrial anti-static packaging and heavy shock-absorbent cushioning
- Primary Condition Status: Factory New / OEM Genuine Spare Part (verify specific frame size, voltage tier, and inverter generation compatibility prior to replacement)
Product Introduction
The ABB 3AXD50000045743 is a critical DC link capacitor bank assembly engineered specifically for ABB ACS880 industrial drive modules utilizing the R8I frame size architecture (rated for 400V to 500V class systems).
In high-power frequency converters, the DC link capacitor bank bridges the rectifier and inverter stages, smoothing out rectified DC voltage ripple, supplying high-frequency peak currents during motor acceleration, and storing regenerative energy braking transients. Over time or under intense thermal cycling, internal electrolytic capacitors experience natural capacitance drift and ESR degradation; replacing the complete factory assembly ensures restored energy-storage stability and prevents drive DC-bus undervoltage or overvoltage trips.
Core Technical Specifications
| Parameter | Value |
| Product Model | 3AXD50000045743 |
| System Compatibility | ABB ACS880 industrial drives (Frame Size R8I) |
| Voltage Class | 400V / 500V AC nominal drive line systems |
| Component Function | DC link energy storage and voltage ripple smoothing bank |
| Mounting Architecture | Internal direct-fit module assembly for R8I inverter power chassis |
| Operating Temperature | Standard industrial cabinet thresholds (up to +50^\circC / +55^\circC max ambient) |
| Storage Temperature | -40^\circC to +70^\circC (-40^\circF to +158^\circF) |
Compliance & Standards Alignment
- Manufactured in accordance with ABB original equipment manufacturer (OEM) material standards, stringent electrical safety norms, and international IEC directives for power drive systems.
- Built to withstand high ripple-current thermal stresses and dynamic charge/discharge cycling characteristic of heavy industrial variable-frequency drives.
Technical Note: DC link capacitor banks store potentially lethal high-voltage electrical energy even after input AC power has been removed. Never attempt to touch, inspect, or replace the capacitor bank module without first verifying that the DC bus voltage has completely decayed to safe levels (typically 0V DC) via diagnostic measurement points.
Storage & Asset Preservation Guidelines
- Store the capacitor module in its original factory packaging within a clean, dry, climate-controlled indoor environment.
- Keep the ambient storage humidity below 85% (non-condensing) and avoid prolonged storage in excessive heat, which can accelerate electrolytic dry-out over extended years of shelf life.
- Avoid mechanical shocks, drops, or physical stress to the terminal busbars and mounting brackets.
Physical Installation Prerequisites
- Ensure that the drive line-side circuit breaker, 3-phase AC supply feed, and any auxiliary control power sources are completely disconnected, isolated, and locked out (LOTO).
- Allow a mandatory discharge waiting period (at least 5 to 15 minutes depending on drive size) and measure the DC bus voltage directly with a calibrated multimeter to confirm absolute zero energy storage before handling.
- Inspect busbar mating surfaces for oxidation or debris, and torque all hardware connections to exact ABB factory specifications using calibrated tools to avoid high-resistance micro-arcing.
Buyer’s FAQ & Logistics
Q: What Harmonized System (HS) code applies to this ABB capacitor bank?
A: Fixed electrical capacitors, power factor correction banks, and industrial electronic components typically classify under HS code 8532.29 (Electrical capacitors, fixed, electrolytic or film) or 8538.90. Confirm final details with your customs broker.
Q: Is part 3AXD50000045743 compatible with R7i or R9i frame drives?
A: No. This specific capacitor bank assembly is tailored exclusively for Frame Size R8I ACS880 modules. Check your drive module nameplate to match the exact frame identifier before ordering.
Q: Is the listed online price final for procurement?
A: Note: Price is subject to market availability, global supply chain tiers, and raw material fluctuations; contact our technical sales desk for a formal, time-sensitive quotation.
