ABB HXR High Voltage Cast-Iron Rib-Cooled Induction Motors
The ABB HXR High Voltage Motor Series (featured model: HXR 450L4 630 kW 6.6 kV) is ABB's classic heavy-duty cast-iron rib-cooled induction motor platform, recognized globally for its rugged mechanical construction, thermal stability, and long service life in severe industrial environments. Built with a rigid cast-iron frame and **IC411 (totally enclosed fan-cooled, TEFC)** rib cooling design, HXR motors provide complete IP55 protection against dust, water, and corrosive ambient air. Covering power output ratings from 100 kW to 3150 kW across high voltage grid supplies from 2.3 kV up to 11 kV (HXR 355, HXR 400, HXR 450, HXR 500, and HXR 560 frame sizes), HXR motors feature **Vacuum Pressure Impregnated (VPI)** Class F/H insulation rated for line-direct starting or VFD speed control with **ABB ACS800, ACS880, and MEGADRIVE medium voltage inverters**. WE DRIVE HONGKONG LIMITED provides 100% original ABB HXR motors, genuine spare parts (terminal boxes, bearings, cooling fans), and direct 1-to-1 mechanical replacement support mapping HXR models to current **ABB AMI and NMI** high-voltage series.
Technical Specifications
| Featured Model | HXR 450L4 (630 kW, 4-Pole, 6.6 kV 50Hz, Cast-Iron Frame, IM B3 Foot Mount) |
|---|---|
| Brand / Manufacturer | ABB (High Voltage Motors Division) |
| Product Series | HXR Series High Voltage Cast-Iron Rib-Cooled Motors |
| Frame Sizes Covered | HXR 355, HXR 400, HXR 450, HXR 500, HXR 560 (5 Core Frame Sizes) |
| Rated Power Range | 100 kW to 3150 kW (135 HP to 4200 HP) |
| High Voltage Supply | 2.3 kV, 3.3 kV, 6.0 kV, 6.6 kV, 10.0 kV, 11.0 kV AC (50/60 Hz) |
| Cooling & Protection | IC411 (TEFC Surface Rib-Cooled) / IP55 Standard (IP56 Harsh Environment Optional) |
| Insulation & Bearings | Class F/H VPI Insulation System; Regreasable Anti-Friction or Hydrodynamic Sleeve Bearings |
Documentation & Resources
ABB HXR Series Frame Size, Voltage & Power Rating Matrix
Full selection matrix for ABB HXR high voltage cast-iron motors. Review frame sizes, supply voltage options, typical 4-pole power outputs, and bearing executions:
| Motor Frame Size | Power Output (4-Pole 50Hz) | High Voltage Supply Options | Cooling & Protection Rating | Bearing & Mount Execution |
|---|---|---|---|---|
| HXR 355 | 100 kW - 400 kW | 2.3 kV, 3.3 kV, 6.0 kV, 6.6 kV | IC411 / TEFC — IP55 / IP56 | Rolling Element Bearings / IM B3 Foot Mount |
| HXR 400 | 315 kW - 630 kW | 3.3 kV, 6.0 kV, 6.6 kV, 10 kV | IC411 / TEFC — IP55 / IP56 | Regreasable Rolling / Insulated Sleeve |
| HXR 450 | 500 kW - 1000 kW | 3.3 kV, 6.0 kV, 6.6 kV, 10 kV, 11 kV | IC411 / TEFC — IP55 / IP56 | Regreasable Rolling / Hydrodynamic Sleeve |
| HXR 500 | 800 kW - 1600 kW | 6.0 kV, 6.6 kV, 10 kV, 11 kV | IC411 / TEFC — IP55 / IP56 | Hydrodynamic Sleeve Bearings Standard |
| HXR 560 | 1400 kW - 3150 kW | 6.0 kV, 6.6 kV, 10 kV, 11 kV | IC411 / TEFC — IP55 / IP56 | Sleeve Bearings with Forced Lubrication Unit |
ABB HXR Series to Modern AMI & NMI High Voltage Motor Replacement Guide
Existing ABB HXR motors can be directly replaced or upgraded with current generation ABB AMI (rib-cooled) and NMI (modular) high voltage motors with 100% exact mechanical mounting alignment:
| Legacy ABB HXR Model | Legacy Power & Voltage | Current AMI / NMI Equivalent | Key Upgrades & Replacement Advantages |
|---|---|---|---|
| HXR 355M4 / HXR 355L4 | 200 kW - 400 kW / 6.6 kV | ABB AMI 400M4A / NMI 315 Direct Drop-In | VPI Class H insulation, lower operational noise, improved VFD harmonic tolerance. |
| HXR 400M4 / HXR 400L4 | 400 kW - 630 kW / 6.6 kV | ABB AMI 400L4A / NMI 355 Direct Drop-In | Identical foot bolt hole centers (B3), lower vibration levels, enhanced terminal box safety. |
| HXR 450M4 / HXR 450L4 | 630 kW - 1000 kW / 10 kV | ABB AMI 450L4A / NMI 400 Direct Drop-In | Hydrodynamic sleeve bearings prevent circulating shaft currents during VFD operation. |
| HXR 500M4 / HXR 500L4 | 1000 kW - 1600 kW / 11 kV | ABB AMI 500L4A / NMI 450 Direct Drop-In | Higher electrical efficiency under partial loads, integrated PT100 temperature sensors. |
Expert Technical Sourcing & High Voltage System Integration Notes
Replacing older ABB HXR cast-iron high-voltage motors with current AMI/NMI models provides immediate operational benefits: advanced VPI insulation rated for high VFD switching frequencies, improved energy efficiency, lower ambient noise, and complete physical interchangeability without altering civil foundation plates or shaft couplings. Simply provide us with your existing motor nameplate serial number or complete model code (e.g., HXR 450L4 or HXR 500L4), and our technical team will deliver a 100% compliant high-voltage replacement specification and proposal.
Core Benchmark Model Standard Configurations
- HXR 355M4 (200 kW 6.6kV IC411)
- HXR 355L4 (315 kW 6.6kV IC411)
- HXR 400M4 (400 kW 6.6kV IC411)
- HXR 400L4 (500 kW 6.6kV IC411)
- HXR 450M4 (630 kW 6.6kV IC411)
- HXR 450L4 (800 kW 6.6kV IC411)
- HXR 500M4 (1000 kW 10kV IC411)
- HXR 500L4 (1250 kW 10kV IC411)
- HXR 560M4 (1600 kW 11kV IC411)
- HXR 560L4 (2500 kW 11kV IC411)
- ABB HXR 355 Replacement to AMI 400
- ABB HXR 400 Replacement to AMI 400
- ABB HXR 450 Replacement to AMI 450
- ABB HXR 500 Replacement to AMI 500
- HXR 400 6.6kV Boiler Feed Pump Motor
- HXR 450 10kV Water Booster Pump
- HXR 500 11kV Cement Kiln Main Drive
- ABB HV HXR Motor TEFC IC411 IP55
- ABB HV Motor Hydrodynamic Sleeve Bearing
- ABB HV Motor VPI Class F Insulation
