Sandwich Bus Duct
Product Overview
Sandwich Bus Duct, also known as bus duct systems, are essential components in electrical distribution networks, providing a safe and efficient means of conducting electricity from one point to another. They are particularly useful in industrial installations and high-rise buildings due to their compact design and ability to handle large currents.
Specifications
Current Ratings: BBT systems can accommodate a wide range of current ratings, typically from 25A to 6300A.
- Material: The conductors used in BBT systems are primarily made of copper or aluminium, with copper being preferred for higher conductivity.
- Insulation: Bus bars are often insulated with heat-shrinkable PVC sleeves and joints are equipped with appropriate shrouds for safety.
Types of Bus Bar Ducts
- Non-Segregated Phase Bus Duct
- Consists of three phase bus bars in a common enclosure.
- Provides safety and reduces fault chances.
- Segregated Phase Bus Duct
- Features separate enclosures for each phase to minimize electromagnetic interference and enhance safety.
- Isolated Phase Bus Duct
- Designed for high current applications, where each phase is isolated from the others to prevent short circuits.
Performance Criteria
- Short-Circuit Rating: BBT systems must withstand specified short-circuit currents, typically rated for 1 second based on the application.
- Temperature Rise Limits: Must comply with IEC standards, ensuring that the temperature rise does not exceed specified limits during operation.
- Installation Requirements: Horizontal supporting intervals should not exceed 1.5 meters, with vertical supports provided for expansion absorption.
Additional Features
- Tap Off Boxes: Available for power distribution up to 800A, allowing easy access to power without interrupting service.
- Mechanical Interlocking: Ensures safety during maintenance by preventing accidental energization of the system.
- Ease of Handling: Designed for straightforward installation and modification, allowing tap-off boxes to be added or removed while the system is live.
Applications
BBT systems are widely used in:
- Industrial power distribution
- Commercial buildings
- Data centres
- High-rise structures
Bus Bar Duct systems offer a robust solution for electrical distribution needs, combining efficiency, safety and flexibility. With specifications that cater to a wide range of applications and current ratings, they are an essential component in modern electrical infrastructure.
