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BUSBAR - Coggle Diagram
BUSBAR
PROTECTION
1) Interlocking schemes
2) Overcurrent (“unrestrained” or “unbiased”) differentia
3) Overcurrent percent (“restrained” or “biased”)
differentia
4) Linear couplers
5) High-impedance bus differential schemes
6) Low-impedance bus differential schemes
FUNCTION
Can help to perform load shedding
Conduct a substantial
current
Branch out the main supply
Can segregate between
critical and non-critical load
LOCATE
Switchgear
Panel boards
Busways
selection factor
Reliability
Cost
Flexibility
MAINTANANCE
LIVE
Thermal Camera
Infrared thermometer
Thermal scanner
Shutdown
Contact Cleaner
Torque Wrench
Paint Marke
TYPE
DOUBLE BUSBAR
Double busbar single breaker
Advantages
Faults on a bus disconnect the circuit connected to
bus
Less maintenance cost
Maintenance without
circuit removal
Disadvantages
May breakdown if any fault occurs in any of the section
The cost increase
Double busbar double breaker
Advantages
Requires more breakers
More operating flexibility
Used on higher voltage levels
Disadvantages
Cost of the system and maintenance is more expensive
SINGLE BUSBAR
Single busbar with Bus Coupler (BC)
Advantages
Can be repaired without disturbing the overall section on the bus bar.
Easy to remove the fault section
Helps to reduce the faults
Disadvantages
Increases the cost.
Single busbar without Bus Coupler (BC)
Advantages
Operation is simple and easy
Simplest switching scheme
Operation is simple and easy
Disadvantages
Faults on the bus will trip all circuit breakers.
Distribution and lower transmission voltage levels
No operating (e.g switching) flexibility.