Air-Insulated Busway (AIB) – Product Overview

Product Definition & Core Technology

The Air-Insulated Busway is a power distribution system that utilizes air as the primary insulating medium between conductive busbars, enclosed within a metallic housing. Designed for efficient and flexible power transmission in commercial, industrial, and infrastructure applications, it offers a reliable alternative to traditional cable-and-conduit systems.

Key Features & Advantages

• High Conductivity & Heat Dissipation
  Copper or aluminum busbars with optimized cross-sectional design ensure efficient current carrying and natural heat dissipation through air circulation.

• Modular & Flexible Installation
  Prefabricated sections with standardized lengths and flanges enable rapid, customizable routing and easy system expansion.

• Low Impedance & Voltage Drop
  Optimized phase-to-phase spacing and conductor arrangement minimize power losses over long distances.

• Enhanced Safety
  Fully enclosed, grounded metallic enclosure provides mechanical protection and prevents accidental contact.

• Cost-Effective Maintenance
  Visible connections and accessible joints simplify inspection and reduce downtime.

Typical Specifications

• Current Ratings: 400A – 6300A

• Voltage Ratings: Up to 1000V AC

• Insulation Class: Class B (130°C) or higher

• Protection Rating: IP54 to IP66 (dust/water resistant)

• Compliance Standards: IEC 61439-6, GB 7251.6, UL 857

Common Configurations

• Feeder Busway: For main power distribution from source to substations.

• Plug-in Busway: With evenly spaced tap-off points for flexible branch connections.

• Rising Main Busway: Designed for vertical power distribution in high-rise buildings.

Industry Applications

• Manufacturing plants & industrial facilities

• Data centers & telecom infrastructure

• Commercial complexes & high-rise buildings

• Renewable energy plants (solar/wind farms)

• Transportation hubs (airports, metro stations)

Comparison with Alternative Types

Selection Guidelines

1. Environment: Suitable for dry, indoor, or well-protected outdoor installations.

2. Load Profile: Ideal for stable, high-current applications with moderate frequency of changes.

3. Space Constraints: Requires adequate ventilation space around housing for optimal cooling.

4. Future Flexibility: Easily reconfigured or extended with additional sections and tap-off boxes.