Medium Voltage Sandwich Busway

Qingdao Fenghua Electric Manufacturing Co., Ltd. supplies premium Medium Voltage Sandwich Busway, modular compact bus duct dedicated for medium-voltage power distribution. Different from low-voltage sandwich busway, MV sandwich busway uses high-grade epoxy composite insulating sheets laminated between phase conductors. The compact clamping structure maintains stable insulation distance and suppresses partial discharge under high voltage. The fully enclosed rigid metal housing provides outstanding protection against dust, moisture and mechanical impact. It can replace multiple parallel MV power cables, reduce cable trench occupation and cut joint failure risks. It is widely adopted for new construction, renovation and capacity expansion of power station, substation and heavy industrial medium voltage power systems.

Product Parameter (Specification)

Product Features and Application Scope

Medium Voltage Sandwich Busway is engineered for medium voltage heavy power transmission scenarios where installation space is limited and high insulation performance is mandatory. Its laminated sandwich structure combines compact size and excellent high-voltage electrical performance.

Core Advantages

1. Compact Laminated High-voltage Insulation Structure Conductors and epoxy insulation layers are tightly stacked, greatly reducing overall dimension compared with traditional non-segregated bus duct, saving valuable substation room space.

2. Low Partial Discharge & Excellent Dielectric Performance High-performance epoxy composite insulation material, optimized electric field design, effectively controls partial discharge, stable under long-term medium voltage operation and lightning impulse test.

3. Outstanding Short-circuit Dynamic & Thermal Stability Rigid sandwich clamping structure firmly locks conductors, withstands huge electromagnetic force during short-circuit faults and prevents busbar displacement and deformation.

4. High Environmental Adaptability Fully enclosed metal shell with anti-corrosion coating, good resistance to dust, humidity and chemical fog, suitable for semi-outdoor and heavy industrial corrosive environments.

5. Modular System & Complete Accessories Available with MV elbows, tees, expansion joints, end closures and terminal transition joints. Modular segments adapt to complex routing layout in power houses.

6. Customized Engineering Solution Qingdao Fenghua Electric can customize conductor cross-section, insulation grade, housing material and terminal connection plates to match MV switchgear and transformer bushings.

Application Scenarios Power plant medium voltage main trunk, substation 10kV/24kV interconnection, heavy chemical factory power distribution, mining project power transmission, large steel & metallurgical plant, industrial park medium voltage distribution, power system renovation and capacity expansion.

Production Details and Craftsmanship

Qingdao Fenghua Electric adopts professional high-voltage lamination process for Medium Voltage Sandwich Busway. Conductors are precision cut and surface tin-plated. High temperature, low partial-discharge epoxy composite sheets are sandwiched between each phase conductor. The whole laminated assembly is clamped and sealed inside thickened alloy housing with heavy anti-corrosion coating. Every bus segment undergoes insulation resistance test, power frequency withstand voltage test, lightning impulse withstand test, partial discharge test and short-circuit simulation test before delivery. We accept third-party witness type test, non-standard prefabricated components and bulk supply for large EPC contractors.

Why Choose Qingdao Fenghua Electric

1. Mature MV Sandwich Busway Manufacturing We have rich manufacturing experience for medium voltage compact laminated bus duct, fully familiar with high voltage type test, partial discharge and impulse withstand requirements.

2. Strict High-voltage Quality Control Rigorous inspection on epoxy insulation material, lamination tightness and electric field optimization to guarantee low partial discharge performance.

3. Full Range of MV Supporting Accessories Complete prefabricated fittings for direction change, thermal expansion compensation and high-voltage terminal transition, supporting complex substation layout.

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

5. Complete Technical Documents & Test Reports Supply full set of type test reports, engineering drawings and certificates required for tendering and project handover.

Conclusion

Qingdao Fenghua Electric Manufacturing Co., Ltd. provides high-performance Medium Voltage Sandwich Busway. With compact structure, low partial discharge and strong short-circuit resistance, it is the ideal compact medium-voltage trunking solution for power plants, substations and heavy industrial projects. We welcome bulk procurement, drawing customization and tender cooperation with global EPC companies and project owners.