The application of insulated tube bus in China started late, and it has only been more than ten years since 2004. However, the demand for equipment has grown steadily, and the application fields have expanded to power grid, power generation, petroleum, chemical industry and other industries. In particular, China has a large population density, concentrated power consumption areas, and there has always been a demand for large capacity transmission, which makes the insulated tube bus with strong current transmission capacity have great development space at 35KV and below voltage levels.

Advantages of tubular bus

(1) High current carrying capacity, low skin effect and low power loss

The tubular bus is a hollow conductor with large surface area, uniform distribution of current density on the conductor surface, and low skin effect coefficient. Compared with multiple rectangular conductors, the AC resistance of the high-voltage insulated tubular bus is small under the same current carrying capacity, so the power loss of the bus is small.

(2) Good heat dissipation condition and low temperature rise

Hollow conductor and inner diameter air duct of bus can form hot air convection due to the application of naturally insulated copper tube bus in new construction projects, so the heat dissipation condition is good.

(3) Large section coefficient and high mechanical strength

Since the conductor is tubular, with large section coefficient and high mechanical strength, it can be arranged in large span, and the number of bus supports can be reduced. Under 50kA short-circuit current, Φ one hundred × The suspension span of 5mm tubular bus can reach 9m, and the bus span can reach 13m by bus bracket support.

(4) Strong electrical insulation

The full insulation mode is adopted, and the shell grounding potential is zero. The shielded insulated tubular bus has uniform electric field distribution, strong electrical insulation and good weather resistance.

(5) Strong seismic resistance and simple installation

The tubular bus can be directly fixed on the steel structure frame or concrete support, and the wall bushing and post insulator can be eliminated, so it has strong seismic capacity. The bus structure is simple, the layout is clear, the installation is convenient, and maintenance free operation is realized.

(6) No environmental interference, high reliability, and small maintenance workload

The tubular bus is fully enclosed and insulated, without condensation inside, and eliminates the influence of external moisture, dust and other factors, with high reliability. The tubular bus adopts single sealed shield insulation, which is reliably grounded, can completely avoid all short circuit faults, has high reliability, and is maintenance free.

Disadvantages of tubular bus

The development of tubular bus in China started relatively late compared with that in the world, only 20 years ago. At present, tubular bus is still a small industry in China, and it is also catching up with the international pace in the whole process of product design, production and installation technology, quality inspection, operation and maintenance. The country has not yet formulated specific and detailed product standards. Generally, each enterprise implements its own enterprise standards in accordance with industry standards. Domestic companies that produce tubular insulated bus bars have their own naming methods and specifications, such as "tubular shielded insulated bus bars, cross-linked polyethylene tubular bus bars, insulated copper tube bus bars", etc., which are all products of the same type. The confusion of naming and model has caused certain difficulties for users to select models.

As a user, you should first understand your own needs, and then determine the bus products you need to purchase according to the specific installation and laying conditions, bus voltage class, rated current, insulation method, etc. Want to learn more Fully insulated tubular bus Information, welcome to consult Guangdong High Power Technology Co., Ltd., which has 30 years of practical experience in the bus industry, mature technology, guaranteed quality, and professional production equipment. It can quickly produce and ship according to customer needs, meet the needs, and the manufacturer quotes. Welcome to call Guangdong High Power Technology Co., Ltd!