RT-CKX8 Air Insulated Bus Duct

Product Features

Internally, a separated air insulation type is used to ensure that the safety clearance and creepage distance between phases are much greater than the requirements specified by national standards. The internal insulation of the equipment is made of high-strength epoxy resin insulation material, which effectively improves the anti vibration and thermal stability of the bus duct equipment and meets the stable operation under various extreme conditions. The shell adopts a corrugated structure formed by bending plates in one go, which makes it small in size and beautiful in appearance, greatly enhancing the mechanical strength and load capacity of traditional bus ducts.

Scope of Application

Air insulated bus duct is suitable for AC three-phase four wire system, three-phase five wire system, frequency 50- 60Hz, rated voltage up to 660V, rated working current 250-5000A power supply and distribution system, undertaking power distribution tasks, used for connecting low-voltage distribution panels with large and medium-sized loads, mainly used in modern workshops, factories and high-rise buildings.

Structural Characteristics

Small in size, compact in structure, with rust resistance and excellent heat dissipation and grounding properties. Its special hollow double-layer structure gives each shell the high bending resistance of the pipe, greatly enhancing the bending resistance of the busbar trunking system.

Equipped with a standard single arm locking shock absorber c onnector, the connection is reliable and convenient.

It is convenient to set the feeding socket, and both the upper and lower sides can be set simultaneously without reducing its bending strength. The safety protection level of the power supply plug interface reaches IP5X (compliant with standard IEC529).

Insulation configuration

The busbar dielectric insulation adopts high-efficiency insulation material - polyester film, which has good high temperature resistance (no toxic gas release in high temperature), high dielectric performance, and insulation level of B. High end insulation material "Plastic King" - oriented polytetrafluoroethylene film (SFM-3) can also be used. This material has a high temperature resistance level (-180 ℃ -+250 ℃ ), a single-layer withstand voltage of 6000V, an insulation level of "C", and an insulation aging life of more than 50 years. It is the best performing insulation material currently in use.

Work Environment

1. Environmental temperature: upper limit:+40 ℃ ; Lower limit: -25 ℃ ; Altitude: below 2000m;

2. Humidity: The relative humidity should not exceed 50% at a higher temperature of+40 ℃ ; Higher relative humidity is allowed when the temperature is low.Condensation conditions: Yes; Basic seismic intensity: 6 degrees of fortification; Installation location: indoor, outdoor;

3. Insulation resistance: The insulation resistance value of each enclosed busbar unit should be greater than or equal to 100M Ω with a 2500V me gohmmeter.

4. Dielectric strength: Each section of the enclosed busbar undergoes a 1-minute power frequency dry test voltage withstand test before leaving the factory. The power frequency withstand voltage and lightning impulse withstand voltage values comply with national standards.

5. Grounding system: Complies with the requirements of IEC364-5-54 for grounding systems.

6. Protection level: Indoor type: IP40; Outdoor type: IP43, IP55.

7. Load performance: Under rated current, the temperature rise of the casing meets the requirements of GB763-90 "Heating during Long term Operation of AC High Voltage Electrical Appliances" standard.

8. Short circuit performance: The dynamic and thermal stability test meets the requirements of GB2706-89 "Test Method for Dynamic and Thermal Stability of AC High Voltage Electrical Appliances" standard.

Performance Parameter Table

Applications

RT-CKX8 air insulated bus duct is suitable for:

Power distribution centers

Factories and modern workshops

High-rise commercial buildings

High-rise residential buildings

Large distribution mainline systems

Low-voltage switchboard connections with medium and large loads

Technical Scope

Rated voltage: up to 660V

Frequency: 50–60Hz

Rated current: 250A–5000A

Protection levels: IP30, IP40, IP54 and other selectable configurations

Available unit length: 0.5m–6m

Installation environment: indoor and outdoor, depending on protection level and project conditions

Structural and Insulation Characteristics

RT-CKX8 features a compact structure with good heat dissipation and grounding performance. The internal insulation uses high-strength insulation materials to improve anti-vibration and thermal stability. The busbar trunking system can also be configured with different insulation materials according to project requirements.

Air Insulated Bus Duct Installation

For air insulated bus duct installation, the system should be selected according to:

rated current

operating voltage

indoor or outdoor location

required protection level

project layout length

tapping or plug-in requirement

It is recommended to confirm these project conditions before quotation and product selection.

FAQ

What is an air insulated bus duct?

An air insulated bus duct is a busbar trunking system that uses air as the main insulation medium between conductors inside a protective metal enclosure.

Is a bus duct insulated?

Yes. A bus duct is insulated by system design. In an air insulated bus duct, insulation is achieved through air clearance, insulation materials, and phase separation components inside the enclosure.

What is a bus duct used for?

A bus duct is used for electrical power transmission and distribution, especially for connecting switchboards, transformers, and larger loads in industrial and commercial projects.

What’s inside a gas insulated bus duct?

A gas insulated bus duct is different from an air insulated bus duct. It typically uses insulating gas inside a sealed enclosure, while an air insulated bus duct uses air as the primary insulation medium.

What is the purpose of a busduct?

The purpose of a busduct is to provide a compact, reliable, and organized method of distributing electrical power in buildings and industrial facilities.

Air insulated bus duct installation

Air insulated bus duct installation depends on current rating, route layout, environment, protection level, and tapping requirements. Correct selection helps improve installation efficiency and long-term operation.

What is a busbar trunking system?

A busbar trunking system is an enclosed power distribution system that uses copper or aluminum conductors inside a protective housing to transfer electricity from one point to another.

Why aren’t busbars insulated?

Not all busbars are fully insulated in the same way. The insulation method depends on system design. In bus duct and busbar trunking systems, insulation may rely on air clearance, insulation supports, films, and enclosure design.

What are the advantages of busbar trunking system?

Busbar trunking systems can offer organized routing, convenient tapping, flexible installation, and reliable power distribution for industrial and commercial applications.

Request a Quote

Looking for an air insulated busbar trunking system manufacturer or air insulated bus duct supplier for your project? Contact ZHERUTONG with your current rating, voltage, protection level, and installation requirements for quotation and selection support.