Answer / naresh

In 400kV switchtard CVT is used for Voltage mesuring
(Protection & Metering purpose) and supply for wave trap.

wave trap is used for distence protection and communication
between sub stations.

For distence protection of line:
By using of wave trap triping time is less compare to relay
triping time.

Answer / venkatesh

cvt is used for mesurment purpose and wave trap is for
distance protection and also communication purpose.

Answer / amit bansod

In 400KV switch yard CVT and WAVE TRAP is used
Because CVT is use for menataing the 400KV voltage and also use for
Synchronising the,bus to line or feeder

Answer / k.prakashchandra

1. PLC communication and PLC aided trip 2. Line 'Live' and
'Dead' indications 3.Synchronization in certain cases 4. As
PT in emergency.

Answer / k.prakashchandra

P L C C, line 'Live' indication ,synchronization

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