Air Insulated Enclosed Busway

Qingdao Fenghua Electric Manufacturing Co., Ltd. manufactures premium Air Insulated Enclosed Busway. Unlike sandwich laminated busway which relies on solid insulation sheets, air insulated enclosed busway separates phase conductors by safe air gaps and fixed high-performance insulating supports. Conductors can be copper (tin-plated / silver-plated optional) or aluminum alloy upon project demand. The fully enclosed alloy housing protects internal busbars from dust and moisture. The open air-gap design facilitates natural heat dissipation, which helps keep operating temperature stable under continuous rated load. This series can be manufactured as feeder type without tap outlets or plug-in type equipped with tap-off boxes for branch power tapping. It replaces multiple parallel power cables, streamlines trunk layout and reduces cable joint failure risks, suitable for new construction, renovation and capacity expansion of general and heavy-duty low-voltage power distribution systems.

Product Parameter (Specification)

Product Features and Application Scope

Air Insulated Enclosed Busway is designed for general and heavy-load power distribution projects where easy maintenance and good heat dissipation are prioritized.

Core Advantages

1. Superior Natural Heat Dissipation Air gap between phases allows heat to dissipate freely, lowering long-run operating temperature and extending service life.

2. Dual Conductor Options Choose copper conductor for ultra-low impedance and high short-circuit performance; select aluminum conductor to cut total project cost.

3. Easy Inspection & Maintenance Open air-gap internal structure enables visual inspection of busbars and joints without disassembly, convenient for routine maintenance and infrared temperature check.

4. Reliable Mechanical & Dielectric Performance High-strength insulating supports fix each phase firmly, maintaining stable phase clearance and resisting electromagnetic force during short-circuit faults.

5. Flexible Structure Selection Available as feeder type for pure main trunk transmission or plug-in type with matching tap-off boxes for branch power tapping.

6. Complete Modular Accessories Full range of prefabricated elbows, tees, expansion joints, end closures and transition terminals for connection with transformers and LV switchgears.

Application Scenarios Factory workshop main power trunk, high-rise office & shopping mall vertical power supply, substation 0.4kV distribution system, industrial park centralized power distribution, general power plant auxiliary power.

Production Details and Craftsmanship

Qingdao Fenghua Electric adopts professional air-insulation assembly workflow for Air Insulated Enclosed Busway. Busbars are precision cut, polished and surface treated. High-strength insulating supports are installed to fix conductors and maintain consistent phase air clearance. Alloy housing undergoes surface pretreatment and anti-corrosion powder coating. Every finished bus segment passes insulation resistance test, power frequency withstand voltage test, temperature rise test and short-circuit mechanical simulation test before shipment. We accept third-party witness inspection and non-standard customized terminals for EPC projects.

Why Choose Qingdao Fenghua Electric

1. Mature Air Insulated Busway Manufacturing We have rich production experience in air-type enclosed bus duct, mastering air clearance design, temperature rise control and short-circuit test requirements.

2. Strict Batch Quality Control Phase spacing, insulator mechanical strength and sealing performance are inspected batch by batch to guarantee stable operation.

3. Full Set of Matching Fittings Complete prefabricated components for direction change, thermal expansion compensation and equipment transition.

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

5. Complete Test Reports & Certificates Supply full set of type test reports, construction drawings and certificates for tendering and project handover.

Conclusion

Qingdao Fenghua Electric Manufacturing Co., Ltd. provides high-performance Air Insulated Enclosed Busway. With reliable air-gap insulation, excellent heat dissipation and flexible conductor options, it is a versatile power trunking solution for industrial, commercial and substation projects. We welcome bulk procurement, drawing customization and tender cooperation with global EPC contractors and project owners.