Main and Transfer Busbar Arrangement
In this type of main and transfer Bus arrangement, there is two busbar scheme, One is main bus and the other is transfer bus. A main advantage is that whole of the load is transferred to the transfer busbar when maintenance or repair are being done on the main busbar. The two double isolating switch and one circuit breaker are arranged for eache circuit as shown in fig.
The advantage & disadvantage of the system are given below:
- In case of any fault in any busbar, the outgoing circuit may be transferred to the another transfer bus.
- It is easy to connect to outgoing feeder from anyone busbar either main bus or transfer bus.
- In this scheme, the maintenance cost of sub-station decreases.
- In this busbar arrangement, bus potential can be used for relays.
- The bus is maintained or expanded by transferring all of the circuits to the transfer bus depending upon the remote backup relays and breakers .
- In this busbar arrangement, any problem of circuit breaker i.r.o any outgoing feeder, the said feeder can not be normalized until that corresponding breaker rectify.
Multiple Choice Question (MCQ) of Transmission and Distribution page-3:21. ACSR conductor implies
A) Anodized Core Smooth Run
B) Anode current sinusoidally run
C) Aluminium conductor steel reinforced
D) All conductors surface treated and realigned.
Multiple Choice Question (MCQ) of Transmission and Distribution page-2:11. In overhead transmission lines the effect of capacitance can be neglected when the length of line is less than
A) 80 km
B) 100 km
C) 160 km
D) 200 km.
Multiple Choice Question (MCQ) of Transmission and Distribution page-1:1. Which of the following is not the transmission voltage in India ?
A) 400 kV
B) 264 kV
C) 132 kV
D) 66 kV.