What is a Bus duct? Introducing the features of Bus duct
"Bus duct" is a combination of the words "busbar" and "duct," which refer to a conductor, and is made by covering an aluminum or copper conductor with an insulator and encasing it in a steel case. Electrical circuits are formed by combining units of various shapes, including straight and irregular shapes, and connecting them like blocks.
Demand for electricity is increasing in many buildings, including data centers that are attracting attention due to BIG data, logistics facilities, production factories, high-rise residential buildings, etc. In addition, as the labor shortage in the construction equipment industry is becoming a serious problem, Bus ducts are attracting attention as they can be expected to reduce labor during construction and operation and can supply large amounts of stable, high-quality electricity.
A Bus duct is a copper or aluminum strip conductor that is covered with or supported by an insulator and housed in a box-shaped case made of steel or aluminum plates.
Kyodo KY-TEC's Bus ducts are manufactured under strict quality control in integrated production facilities.
Example of installation in an electrical room (E-BD type insulated Bus duct)
Outdoor installation example (E-BD type waterproof Bus duct)
Six benefits of introducing Bus Duct
MERIT 01Excellent earthquake resistance
Bus duct is not only fireproof but also highly earthquake-resistant. Its excellent earthquake resistance was proven during the Great Hanshin-Awaji Earthquake and the Great East Japan Earthquake.
MERIT 02There is almost no electromagnetic wave generation
Bus ducts generate very little electromagnetic waves compared to cables (1/60 to 1/200 of that of cables at the 1m point), making them trunk lines that are gentle on people, computers, and medical equipment.
MERIT 03Can also handle uneven loads
Because the Bus duct system is a centralized trunk line system, even if the load is uneven depending on the location (floor), it is possible to balance the load between surplus and shortage locations.
MERIT 04You can freely choose the power outlet
Load expansion or relocation can be easily performed using the plug-in holes of the standard joiner, which is equipped with a plug-in function at the connection part.
MERIT 05It is a recyclable main line
Unused Bus ducts are separated into steel plates, conductors (aluminum or copper), and insulators (PETP), and each can be reused as a resource. This is an environmentally friendly, recyclable trunk line.
MERIT 06Labor-saving construction
Bus duct can be prefabricated and can be constructed according to the construction process, which allows for uniform labor input and labor savings.
Bus duct Features
Bus ducts are available in low-voltage and high-voltage versions depending on the application. Both types connect variously shaped parts to form electrical circuits, allowing construction to be stopped midway. This means construction can be started or stopped as needed, avoiding the need for concentrated manpower deployment near the end of construction, as is the case with cable installation, and averaging out labor costs. This effect is even greater for large projects with long construction periods. With low-voltage versions, loads can be easily increased or relocated via a branch box equipped with a circuit breaker. Furthermore, because Bus ducts are covered in metal, they have less magnetic flux leakage than cables and do not affect other equipment. In this way, Bus ducts reduce labor costs during construction and running costs after installation.
Low-pressure Bus duct indoor installation (E-BD type insulated Bus duct)
High-voltage Bus duct outdoor installation (HV type high-voltage Bus duct)
A revolutionary connection system
KYODO KY-TEC's Perfect Joint System is a revolutionary system that automatically tightens joints correctly, regardless of who is performing the connection work and under what conditions, and also allows the tightening status to be visually confirmed from a distance. It ensures the safety of joints from construction to maintenance.
For low voltage applications, KYODO KY-TEC's flagship products are the E-BD type insulated Bus duct and the SS-T type shaft star. Both products have a non-directional connection and a load branching function, allowing for uninterrupted load expansion and relocation, just like an electrical outlet. The SS-T type shaft star is widely used in apartment buildings and medium-sized buildings, and its aluminum conductors and case make it lightweight and compact. The lineup also includes the SV-F type Black Bus, which is specialized for powering servers in the ever-increasing number of data centers. The branch box is equipped with a mechanism to prevent incorrect connections, allowing for uninterrupted server expansion. It can also be used for solutions such as power monitoring.
For high voltages, there are Bus ducts that support voltages from 3.6kV to 36kV. Bus ducts for 3.6kV and 7.2kV, which are in particularly high demand, include the SH-V type compact high-pressure Bus duct, which has improved conductor arrangement and insulation and is more compact than previous models. Thanks to these improvements, Bus ducts are now widely used as essential equipment for important electrical facilities.
Kyodo KY-TEC's Bus ducts are manufactured under strict quality control in integrated production facilities.
Excellent durability
After the Great East Japan Earthquake, we visited a Bus duct supplier in the affected area and found that even in an earthquake that had caused fireproof walls to collapse and cable racks to deform, the bolts at the connections had not loosened and the product maintained its performance.
Clean aesthetics
Bus duct is a wiring method that simplifies system management by aggregating multiple systems and reducing the number of systems, compared to the difficult system management of cables that are messily intertwined on cable racks.
Comparison of cable wiring and Bus duct wiring
When comparing cable wiring and Bus duct wiring, you can see that Bus duct wiring has a neater and more compact finish.
After the Great East Japan Earthquake, we visited a Bus duct supplier in the affected area and found that even in an earthquake that had caused fireproof walls to collapse and cable racks to deform, the bolts at the connections had not loosened and the product maintained its performance.
