Question { L&T, 72922 }

what is the main purpose of line PT and bus PT?

Answer

We are using Both Line& Bus PT(Potential Transformer) But different application.
1. Line PT- This PT using on main Incomers to Bus bar system or Main out going from Bus system,it will protect the particular feeder system. Ex,Transformer incomers,Generator incomer,etc,....
2. Bus PT- This PT using on Particular Bus bar system, It will protect the Bus Bar. Its will useful for Bus bar to bus bar synchronization or Bus bar to any source(Using with line PT)