Answer / prabu

In HT line wave trap is used for communication purpose
between 2 stations
Eg: generating station to sub(load distrubting) station..

Answer / rahul

it is used to trap waves of higher frequencies entering
generator & transformer units

Answer / tapan kakadia

the duty of the wavetrap is
-communication between two stations
-it differentiate the high frequency signal(communication wave) on a power line
it is only used in a condition when no mobile network or satelite is not working in case of some disaster.

Answer / sonu kumar jha

wave-trap catches the carrier signal of HT line and transmit it in communication form to connect one substation to other substation...

At 765Kv, I have seen the use of PT at line side for metering and CVT for protection, although as far as my knowledge is concern, PT at this voltage level will have huge loss and more cost as compared to CVT as CVT can also perform same function of Protection and Metering? So my question is why use PT and not CVT for metering and protection in order to reduce the cost.

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