RT-GX Copper Tube Busway/Busbar

We supply RT-GX copper tube busbar for projects that require reliable current transmission, compact layout, and stable insulation performance. This product uses copper tubes as conductors and external insulation to form a shielded tubular busbar solution for medium-voltage power systems.

Compared with conventional exposed busbars or cable arrangements, insulated copper tube busbar offers a clearer layout, strong structural stability, and favorable heat dissipation conditions. It is suitable for applications where large current capacity, mechanical strength, and electrical insulation are all important.

Scope of Application

Copper tube busbar is most suitable for substations with voltages ranging from 0.4 to 40.5kV; New, renovated with large capacity and small footprint. Suitable for substations, power plants, and factory substations to replace exposed busbars and cables.

Key Advantages

High Current Carrying Capacity

RT-GX copper tube busbar is designed for high-current applications, with current carrying capacity up to 12000A.

Low Skin Effect and Low Power Loss

The hollow conductor structure provides a large conductive surface area and more uniform current distribution, helping reduce skin effect and power loss in high-current operation.

Good Heat Dissipation

As a hollow conductor, the busbar provides favorable heat dissipation conditions and supports lower temperature rise under suitable operating conditions.

High Mechanical Strength

The tubular conductor structure provides high mechanical strength and supports longer spans compared with conventional conductor arrangements, helping reduce the number of supports in some layouts.

Stable Insulation and Shielding Performance

The product adopts insulated and shielded construction to support uniform electric field distribution, reliable insulation performance, and good weather resistance.

Structural Features

High current carrying capacity, low skin effect, and low power consumption. Insulated copper tube busbar is a hollow conductor with a large surface area, uniform current density distribution on the conductor surface, and low skin effect coefficient. Compared to multiple rectangular conductors, it has the same load. In the flowing state, the AC resistance of the high-voltage insulated tube busbar is very small, so the power loss of the busbar is very small.

Good heat dissipation conditions, low temperature rise, and high voltage insulated tubular busbars are hollow conductors. In the application of natural insulated copper tube busbars in new projects, the inner diameter air duct of the busbar can form hot air convection. The heat dissipation conditions are good.

Large cross-sectional coefficient and high mechanical strength. Due to the tubular nature of the conductor, it has a large cross-sectional coefficient and high mechanical strength. Can be arranged over a large span while reducing the number of busbar supports. In the case of a short-circuit current of 50kA, the suspended span of the Φ 100 × 5mm copper tube busbar is 9 meters, and the busbar can be supported by the busbar bracket, with a busbar span of up to 13 meters.

High electrical insulation performance. The high-voltage insulated tubular busbar adopts a sealed shielding insulation method, and the grounding potential of the shell is zero. Shielded insulation tube type busbar has uniform electric field distribution, strong electrical insulation performance, and good weather resistance.

Strong earthquake resistance and simplified installation. High voltage insulated tubular busbars can be directly fixed on steel structure frames or concrete supports, eliminating the need for wall sleeves and post insulators, and have strong seismic resistance. The busbar structure is simple, the layout is clear, the installation is convenient, and maintenance free operation is required.

Insulation materials have high heat resistance, aging resistance, and high insulation performance. The main insulation material for insulated tubular busbars is polytetrafluoroethylene, which can operate at temperatures ranging from -250 ℃ to+340 ℃ . It has excellent electrical performance and chemical stability. Low loss, flame retardant, aging resistant, with a service life of ≥ 30 years.

Not affected by environmental interference, high reliability, and low maintenance workload. The high-voltage insulated tubular busbar is covered with insulation, with no condensation inside, eliminating the influence of external factors such as moisture and dust, and has high reliability. The high-voltage insulated tubular busbar adopts single machine sealing andshielding insulation, reliable grounding, can completely avoid all short-circuit faults, high reliability, and low maintenance.

Optional Monitoring Functions

According to project requirements, optional functions can be considered for the busbar system, including: temperature sensing at busbar joints, integrated partial discharge monitoring, grounding circulation monitoring.

These functions can support on-site signal collection, condition monitoring, and later fault analysis in power system operation.

Specification and Model

Our current specification table covers models for 10kV / 35kV applications with rated current from 1000A to 10000A, including copper pipe specifications, cross-sectional area, and weight data.

Please confirm the required voltage class, current rating, and conductor specification before ordering.

FAQ

What is a copper tube busbar?

A copper tube busbar is a busbar product that uses copper tubes as conductors. It is commonly used in medium-voltage or high-current applications where current carrying capacity, mechanical strength, and heat dissipation are important.

What is a shielded tubular busbar?

A shielded tubular busbar is a tubular busbar structure with insulation and shielding design to support stable electrical insulation, more uniform electric field distribution, and reliable operation in demanding power applications.

Where is insulated copper tube busbar used?

It is commonly used in substations, power plants, factory substations, and other industrial power systems that require high-current transmission and compact electrical layout.

How is copper tube busway installed?

Installation depends on voltage class, conductor size, span, support structure, and project layout. In many projects, copper tube busbar can be mounted on steel structures or concrete supports. Installation details should be confirmed according to technical drawings and project requirements.

What factors affect copper tube busway cost?

Copper tube busway cost is influenced by voltage class, current rating, copper tube specification, insulation structure, span design, monitoring requirements, and overall project configuration. For accurate evaluation, the technical requirements of the project should be confirmed first.

Technical Resources

We provide technical resources to support product review, engineering communication, and project planning. Please contact us for technical documents, specification confirmation, and application support for RT-GX copper tube busbar projects.

Need support for a copper tube busbar project?
Contact ZHERUTONG for technical documents, specification review, and project discussion.