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Question

In substation which of the following devices is a carrier communication device? 

A.

CVT 

B.

Earth conductor 

C.

Wave trap 

D.

Lightning arrestor

Answer ( Option C)

Wave trap 

Solution

A line trap, also known as wave trap, or highfrequency stopper, is a maintenance-free parallel resonant circuit, mounted inline on high voltage (HV) AC transmission power lines to prevent the transmission of high frequency (40 KHz to 1000 KHz) carrier signals of power line communication to unwanted destinations.

Hence, the correct option is (C).

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