Copper Conductor Sandwich Busway

The Copper Conductor Sandwich Busway is a highly efficient power transmission solution specifically engineered for modern power distribution systems. Utilizing high-purity electrolytic copper conductors and a "sandwich" structure featuring tightly stacked phase conductors, it seamlessly integrates the conductors, insulation materials, and metal enclosure. This design offers a multitude of advantages, including high current-carrying capacity, low power loss, and installation flexibility. The product is widely applicable in high-current power distribution scenarios - such as industrial plants, high-rise buildings, data centers, and rail transit systems - providing stable and reliable power transmission assurance for a diverse range of electrical applications.

Technical Parameters

Core Technical Advantages

(I) High-Purity Copper Conductors: Lower Loss, Greater Energy Efficiency

The system employs T2-grade electrolytic copper with a purity of ≥99.95% as its conductor material. At 20°C, the resistivity is ≤0.01724 Ω·mm²/m, and the conductivity exceeds 98%. Compared to standard copper materials, this results in a reduction of approximately 5% to 8% in line losses. The conductor surfaces can be tin-plated or silver-plated upon request; this significantly enhances resistance to oxidation and corrosion, reduces contact resistance, ensures the long-term stability of connection points, and effectively extends the product's service life.

(II) "Sandwich" Compact Structure: A Dual Breakthrough in Space Utilization and Energy Efficiency

The three-phase conductors are directly bonded using thin-layer insulation materials and tightly stacked without any air gaps, thereby compressing the electrical clearance to a mere 6–10 mm. This design boosts power transmission density per unit of space by over 40% and results in a more compact physical profile. Consequently, it achieves substantial savings in installation space, making it particularly well-suited for space-constrained environments such as electrical risers and equipment-dense zones. Furthermore, this tightly arranged structure reduces system reactance to just 40%–60% of that found in traditional air-insulated busbar trunking systems, significantly minimizing voltage drop under high-current operating conditions and enhancing overall power transmission efficiency.

(III) High-Efficiency Heat Dissipation Design: Lower Temperature Rise, Greater Stability

Heat generated by the conductors is rapidly conducted through the insulation layer to the metal enclosure. When paired with an aluminum alloy enclosure featuring integrated heat-dissipation fins, the surface area of the enclosure is increased by over 30%, resulting in a substantial improvement in heat dissipation efficiency. Certain high-current-capacity models feature longitudinal heat dissipation grooves on the inner surface of the housing; this design further enhances thermal conductivity, ensuring that the temperature rise of the connection terminals remains ≤60K and that of the metal housing remains ≤30K, thereby maintaining stable operating temperatures within a safe range during long-term operation.

(IV) Comprehensive Protection for All Scenarios - Safe and Reliable

Basic Protection: The housing is constructed from aluminum-magnesium alloy or cold-rolled steel sheet. Treated via anodizing, electrophoresis, or electrostatic powder coating, it exhibits excellent corrosion resistance and mechanical strength. With an ingress protection (IP) rating of IP54 or higher, it effectively guards against dust and splashing water, making it suitable for standard environments such as general factory floors and power distribution rooms.

Protection for Special Environments: Customized waterproof (encapsulated) models are available. These units feature a fully sealed, integral encapsulation using unsaturated polyester resin combined with inorganic fillers, achieving an IP rating of IP67–IP68. They are capable of stable operation in outdoor settings, underwater environments, and atmospheres containing corrosive gases, boasting an insulation aging life exceeding 50 years.

Fire-Resistant Protection: Fire-resistant models utilize a composite insulation layer comprising mica tape and ceramifying silicone rubber. The housing is coated with an intumescent (fire-expanding) fireproof paint; even when exposed to extreme temperatures of 960°C, the unit can maintain power supply for 1 to 3 hours, providing continuous power assurance for fire safety circuits. These products comply with national standards such as GB/T 9978.1-2008.

(V) Modular Installation - Flexible and Convenient Expansion

Featuring a standardized modular design, the system allows for rapid on-site connection using a single bolt. Each connection is equipped with a torque control mechanism to ensure minimal contact resistance. The connectors support an alignment tolerance adjustment of ±4mm, effectively compensating for installation errors. Plug-in units can be positioned at any point along the busway and support hot-plugging (live insertion/removal) - with the ground connection engaging first and disengaging last - rated for a minimum of 200 plug-in cycles. This flexibility allows the system to easily adapt to production line reconfigurations and equipment expansion requirements, thereby reducing construction lead times and maintenance costs.

Product Selection Guide

Application Scenarios

(I) Industrial Manufacturing Sector

Suitable for heavy-duty workshops involved in automotive manufacturing, mechanical processing, electronic assembly, and similar fields, providing a stable backbone power supply for large-scale machinery and automated production lines. Its low-impedance characteristics effectively mitigate voltage drops caused by current fluctuations, while its modular design facilitates frequent production line adjustments and equipment expansion, thereby meeting the flexible demands of industrial production.

(II) High-Rise Buildings and Commercial Complexes

Installed vertically within electrical risers, these systems serve as the primary power distribution lines for each floor - a solution adopted by over 90% of high-rise buildings. In commercial complexes, they enable long-distance, high-current power distribution, satisfying the diverse electrical load requirements of various venues such as shopping malls, hotels, and office buildings; furthermore, they offer convenient tap-off points for power distribution, simplifying future maintenance and system modifications.

(III) Data Centers and Healthcare Facilities

These systems provide continuous and reliable power assurance for mission-critical loads - such as data center servers and medical equipment - that demand exceptional reliability. Certain intelligent product models feature integrated temperature sensing and current monitoring modules; supporting RS485 or wireless transmission protocols, they enable remote operation and maintenance as well as fault pre-warning capabilities, thereby ensuring uninterrupted power supply continuity.

(IV) Special Environmental Settings

Waterproof cast-resin products are ideally suited for humid and corrosive environments - such as underground utility tunnels, water treatment plants, and coastal facilities. Fire-resistant products, conversely, are designed for application in fire safety circuits and emergency power systems; in the event of a fire, they maintain power supply continuity, thereby gaining critical time for personnel evacuation and the salvage of equipment.

FAQ

Q1: What is a Copper Conductor Sandwich Busway?

A: It is a low-voltage, medium-to-high load distribution system with dense T2 copper conductors (≥99.9%) for stable current, low loss, and reliable operation.

Q2: What are its key specifications?

A: Rated 1000A, suitable for ≤1000V systems. Copper is tin-plated for low contact resistance and anti-corrosion. IP54+ protection, compliant with GB 7251 & IEC 61439.

Q3: Where is it commonly used?

A: Ideal for high-rise buildings, industrial plants, commercial centers, data centers, and other low-voltage power distribution applications.

Q4: What are the main advantages?

A: High current capacity, low energy loss, excellent heat dissipation, compact design, and easy installation and expansion.

Q5: Is it safe and reliable?

A: Yes. The dense structure and high-quality copper ensure reliable operation, and all products are CCC certified for safety.

Q6: Can I customize the busway?

A: Fenghua Electric offers flexible solutions for different layouts, lengths, and capacities. Contact us for custom orders or consultation.

Q7: How does it compare to traditional busway or cables?

A: It reduces energy loss, improves heat dissipation, and saves space, making it more efficient and reliable than conventional cabling.

Q8: How can I purchase or inquire?

A: Contact Fenghua Electric to request a quote, place an order, or discuss project requirements. We provide professional support for all inquiries.