High Current Sandwich Busway

Qingdao Fenghua Electric Manufacturing Co., Ltd. supplies premium High Current Sandwich Busway. Different from air insulated busway, sandwich busway uses layered insulation films clamped between phase conductors, with compact enclosed structure. High-purity copper or aluminum conductors are tightly laminated with high-performance insulating materials, greatly reducing overall volume and impedance. Its dense laminated structure delivers superior dynamic & thermal stability under short-circuit fault. Modular design enables quick on-site assembly, with tap-off boxes available for branch power tapping. It is the ideal solution for projects with limited shaft space and high short-circuit requirement, widely adopted for new construction, renovation and capacity expansion of industrial, commercial and data center power distribution systems.

Product Parameter (Specification)

Product Features and Application Scope

High Current Sandwich Busway features compact laminated structure, developed for projects with limited installation space and strict short-circuit demand. It stands out against air insulated busway on smaller footprint and stronger anti-electromagnetic impact performance.

Core Advantages

1. Ultra-compact Laminated Structure Conductors and insulating layers are closely stacked, greatly reducing overall width and height, saving precious shaft and power room space.

2. Excellent Short-circuit Dynamic & Thermal Stability The sandwich clamping structure locks busbars firmly, resisting huge electromagnetic force during short-circuit and preventing conductor displacement or deformation.

3. Low Impedance & Low Temperature Rise High-purity conductors with large contact area reduce impedance and power loss. Uniform heat distribution ensures stable temperature rise under continuous heavy load.

4. High Mechanical Strength & Dust / Moisture Resistance Fully enclosed metal housing protects internal insulation and conductors from dust, moisture and mechanical damage, suitable for complex indoor environments.

5. Modular Assembly & Complete Fittings Available with elbows, tees, expansion joints, end caps and plug-in tap-off boxes. Flexible modular segments adapt to complex trunk routing.

6. Flexible Current Grade Customization Full current range 400A–5000A available. Qingdao Fenghua Electric can customize conductor cross-section, housing finish and terminal connection plates to match transformer and switchgear.

Application Scenarios Data center main incoming trunk, heavy industrial factory power distribution, super high-rise building vertical power supply, large commercial complex, substation low voltage interconnection, industrial park centralized power supply, power renovation and expansion projects.

Production Details and Craftsmanship

Qingdao Fenghua Electric adopts advanced lamination process for High Current Sandwich Busway. Conductors are precision cut, surface tin or silver plated. High-temperature halogen-free insulating films are tightly sandwiched between each phase busbar. The whole assembly is clamped and sealed inside rigid alloy housing with anti-corrosion surface treatment. Every bus segment passes insulation resistance test, power frequency withstand voltage test, temperature rise test and short-circuit simulation test before shipment. We accept third-party witness inspection, non-standard prefabricated parts and bulk supply for EPC contractors.

Why Choose Qingdao Fenghua Electric

1. Mature Sandwich Busway Manufacturing We have rich production experience for high-current compact sandwich bus duct, fully familiar with lamination technology, temperature rise and short-circuit testing requirements.

2. Strict Quality Control for Laminated Insulation Rigorous inspection on insulating material, lamination tightness and insulation integrity to avoid partial discharge risk.

3. Complete System Accessories Full range of prefabricated fittings for direction change, thermal expansion compensation and branch tapping, supporting complex project layout.

4. Full-cycle Engineering Technical Service Provide load calculation, short-circuit parameter verification, routing optimization, on-site installation guidance and acceptance support.

5. Complete Technical Documents & Certificates Supply full test reports, engineering drawings and certificates for tendering and project handover.

Conclusion

Qingdao Fenghua Electric Manufacturing Co., Ltd. provides high-performance High Current Sandwich Busway. With compact dimension, strong short-circuit resistance and low power loss, it is the preferred dense bus duct for high-current power distribution projects where space is limited. We welcome bulk procurement, drawing customization and tender cooperation with global EPC companies and project owners.