Скачать или смотреть Main & Transfer bus System | Main & Transfer bus System Advantages and Disadvantages

Hi in this section we are going to see about main and transfer bus system.
• In this arrangement we have two buses one is main bus and other one is transfer bus. the transfer bus is connected With the help of isolator switches, this isolator is also called by pass isolators and with the help of circuit breakers and isolator switches it is connected to the main bus.
• In normal conditions, the feeders are fed through the main bus but during the maintenance or service it may be a breaker or bus we switch the load to transfer bus
Advantages
1.The maintenance can easily be done
2.The load shifted on any of the buses is easy,
3.The testing or maintenance of any feeder circuit breakers is possible, 4.Low initial &
5.The maintenance cost of the arrangement is less.
Disadvantages:
1.The main bus is maintained or expanded then any fault will cause full shutdown,
2.Fault on any circuit breaker will cause full shutdown &
3.Switching is complex to switch to transfer bus