Medium Current Enclosed Busway

As an experienced China busway manufacturer and factory, Fenghua Electric integrates advanced production technology and strict quality control to deliver busway systems with high efficiency, durability, and safety.

Typical applications include:

Industrial workshop power distribution

Commercial buildings and shopping malls

High-rise building vertical power transmission

Hospitals and data centers

Infrastructure and large public facilities

What is Medium Current Enclosed Busway?

Fenghua Electric Medium Current Enclosed Busway is a modular electrical distribution system designed to transmit medium-level electrical power safely and efficiently. It replaces traditional cable systems by offering higher current capacity, better heat dissipation, and easier installation, making it widely used in modern power distribution networks.

This system is suitable for AC three-phase four-wire or five-wire systems, with rated voltage up to 660V and frequency of 50/60Hz.

Core Product Types

1. Air Insulated Medium Current Enclosed Busway

▪Dual insulation: air gap + epoxy insulation blocks

▪Excellent heat dissipation performance

▪Suitable for dry and stable environments

▪Corrugated housing enhances mechanical strength

2. Compact Insulated Medium Current Enclosed Busway

▪Fully enclosed with epoxy or polymer insulation

▪Space-saving and dust/moisture resistant

▪Flame-retardant materials compliant with RoHS

▪Ideal for high humidity or limited space environments

Technical Specifications: Rigorous Standards Forge Exceptional Performance

Product Highlights

Outstanding Short-Circuit Withstand Capability: Features an enclosure constructed from aluminum (or low-magnetic steel plate), which effectively attenuates structural heating caused by eddy currents or circulating currents. This reduces the temperature of the enclosed busbar housing, minimizes power loss, increases current-carrying capacity, and mitigates electromagnetic forces, thereby ensuring effective system safety in the event of a short-circuit fault.

Multi-Layer Vibration Damping Design: Employs flexible connections or braided copper straps at interfaces with transformers, generators, and distribution cabinets; rubber pads are inserted between enclosure sections to dampen vibrations. The busbar trunking body is additionally fitted with shock absorbers to provide elastic support for insulators and conductors, effectively preventing damage caused by mechanical vibrations and seismic waves.

Optimized Heat Transfer Efficiency: The exterior surface is coated with light gray paint to minimize the absorption of visible light, while the interior surface is coated with black paint to enhance the radiation of internal heat toward the enclosure. This dual-coating strategy also prevents corona discharge and significantly improves overall heat dissipation efficiency.

Anti-Condensation and Corrosion Resistance: Wall-penetration bushings are installed at wall crossings to completely isolate outdoor and indoor sections of the enclosed busbar, thereby preventing condensation caused by temperature fluctuations. For systems with currents ≥ 3000A, all joints undergo silver plating to prevent electrolytic corrosion—particularly in coastal outdoor environments or settings with severe electrochemical corrosion risks—while simultaneously reducing contact resistance.

Intelligent Temperature Monitoring: Sealed observation windows are strategically positioned at the connection points between the enclosed busbar and transformers, generators, or distribution cabinets. These windows allow for direct temperature measurement using temperature-sensitive stickers or far-infrared thermal imaging devices, enabling real-time monitoring of the busbar system's operational status.

Convenient Installation & Low-Cost Maintenance

Fenghua Electric Medium Current Enclosed Busway, as a trusted China manufacturer and supplier, offers flexible installation and easy maintenance, helping reduce total project lifecycle costs.

Flexible Installation: Supports both horizontal and vertical mounting with brackets in electrical risers, equipment rooms, or under ceilings. Corrugated expansion joints compensate for thermal expansion and foundation settlement, ensuring quick and reliable setup.

Modular & User-Friendly: Rapid assembly, easy route adjustments, and capacity expansion. Plug-in units feature phase-error prevention, while standardized cover plates ensure high interchangeability across all current ratings.

Simplified Maintenance: Routine checks focus on connector tightness and housing protection. Minor issues like insulation drop or localized overheating can be quickly fixed, minimizing downtime and lowering maintenance costs.

Application Scenarios

Main power distribution trunks for medium-to-large-scale power equipment in industrial workshops

Main floor-level power distribution systems in commercial buildings such as large shopping malls and office complexes

Vertical power transmission risers in high-rise buildings

Power supply circuits for critical loads in facilities with stringent requirements for power supply stability, such as hospitals and data centers

Power transmission upgrades for medium-load zones within renovation projects for older industrial plants

Selection Guide: Scientifically Matching Project Requirements

Current Rating Selection: Select the appropriate rating based on the actual load current; it is recommended to include a 10%–20% margin to accommodate future capacity expansion needs.

Insulation Type Selection: For dry environments characterized by lower ambient temperatures and minimal current fluctuations, air-insulated types are the preferred choice; for environments with limited space, high humidity, or significant dust accumulation, compact-insulated types are recommended.

Protection Class Determination: For standard indoor scenarios, an IP40 rating is sufficient; for outdoor use or in humid and dusty environments, ensure a protection rating of at least IP54; for environments with specific corrosive conditions, higher protection ratings can be customized.

Conductor Material Considerations: For projects involving sustained high loads and strict stability requirements, copper conductors are the preferred choice; for projects with limited budgets and minimal load fluctuations, aluminum alloy conductors may be selected.

Why Choose Fenghua Electric?

As a trusted China busway manufacturer and supplier, Fenghua Electric offers:

20+ years manufacturing experience in power distribution equipment

Certified with 3C, High-Tech Enterprise, AAA Credit Rating

14+ patents ensuring advanced technology

Strong R&D team for customized solutions

2000㎡ intelligent production workshop

Multiple automated production lines

Flexible MOQ and fast delivery

Proven projects in industrial, commercial, and energy sectors

We are committed to delivering safe, efficient, and cost-effective power transmission solutions for global customers.

FAQ

1. What is a Medium Current Enclosed Busway used for?

It is used to distribute medium-level electrical power in buildings and industrial facilities, replacing traditional cable systems.

2. What is the difference between busway and cables?

Busway systems provide higher efficiency, better heat dissipation, easier installation, and safer operation compared to cables.

3. How do I choose the right current rating?

Select based on your load demand and add a 10–20% safety margin for future expansion.

4. Can the busway be customized?

Yes, Fenghua Electric offers full customization including size, current rating, material, and protection level.

5. Is it suitable for outdoor use?

Yes, with IP54 or higher protection rating, it can be used in outdoor or harsh environments.

6. What materials are used for conductors?

Copper and aluminum are both available depending on performance and budget requirements.

7. How long is the service life?

With proper installation and maintenance, the system can operate reliably for over 20 years.

8. What after-sales service do you provide?

We provide 2-year warranty, lifetime technical support, and fast response service within 24–48 hours.