Please enable JavaScript.
Coggle requires JavaScript to display documents.
Busbar - Coggle Diagram
Busbar
Protection
1) Interlocking schemes
2) Overcurrent (“unrestrained” or “unbiased”) differential
5) High-impedance bus differential schemes
6) Low-impedance bus differential schemes
3) Overcurrent percent (“restrained” or “biased”) differential
4) Linear couplers
Function
Conduct a substantial current
Branch out the main supply
Can segregate between critical and non-critical load
Can help to perform load shedding
Locate
Switchgear
Panel boards
Busways
Selection factor
Cost
Flexibility
Reliability
Why
Uses less space
Tightly compressed conductors inside the busbar are isolated and reliable.
Cable requires large bend radius
Principle
Kirchhoff's Current Law
Type
Single busbar
Single busbar without Bus Coupler (BC)
Advantages
• Low cost
• Less maintenance
• Simplest switching scheme
• Operation is simple and easy
Disadvantages
• Distribution and lower transmission voltage levels.
• No operating (e.g switching) flexibility.
• Faults on the bus will trip all circuit breakers.
Single busbar with Bus Coupler (BC)
Advantages
Easy to remove the fault section
Can be repaired without disturbing the overall section on the bus bar.
Helps to reduce the faults
Disadvantages
Increases the cost.
Double busbar
Double busbar single breaker
Advantages
Faults on a bus disconnect the circuit connected to bus
Less maintenance cost
Operated by using the bus potential.
Easy to shift the load
Maintenance without
circuit removal.
Disadvantages
The cost increase
May breakdown if any fault occurs in any of the section
Double busbar double breaker
Advantages
Used on higher voltage levels
More operating flexibility.
Requires more breakers.
Disadvantages
Cost of the system and maintenance is more
Maintenance
Live
Thermal scanner
Infrared thermometer
Thermal Camera
Shutdown
Torque Wrench
Paint Marker
Contact Cleaner
