Answer / k.prakashchandra

Generally for PLC Communication ,PLC aided tripping ,and
line LIVE / DEAD indications.It is a cheaper substitute for
PT also.In certain cases it can be used for synchronization
with the grid in GS.

Answer / vishal ingle

CAPACITIVE VOLTAGE TRANSFORMER IN THE EHV YARD IS USED FOR
MAIN PROTECION, METERING AND AS WELL AS FOR COMMUNICATION &
CARRIER AIDID TRIPPING ALSO.

Answer / ha

CVT means capacitor voltage transformer and it use in
substation that it is above 230KV.PT or VT measure voltage
and this parameter used for protection system.in the high
voltage used CVT insted VT and capacitors play divider
role. we can used from these capasitors for PLC system
until cost have been minimum.

Answer / pavan kumar

cvt is used to maintain the voltage profile of the transmission line

Answer / pandu

simply we use cvt.

What is the causes Power Factor become leading and what is the effect of Electrical system ?

2 Answers  

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why restricted earth fault protection can not operate for phase faults??as there will be a current in secondary of ct,when a phase fault occurs!

1 Answers   GMR,

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why do we use 25kv supply for traction purpose?

0 Answers   Bhel,

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What is ment by KVAR and what are the advantage&dis- advantages of KVAR

2 Answers  

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how u measure/calculate renge of capacitor,capacitor has no any rating tag.what is the theory of measure of capacitons.

0 Answers   Marriott,

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why power dissipation is due to low frequency?

1 Answers  

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how does the switching of capacitors in a capacitor bank take place when we use them at the load side to reduce the power factor?

2 Answers  

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what is the advantage of using 3 phase line rather than using 2 phase line?

2 Answers   Havells,

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Is it recommended to apply H.pot test for new cables segments after terminations or joints, however, this cable has been tested before at the manufactor by the vendor ? or only we can apply megger tests ?

1 Answers   Centroid,

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Is a contactor (or master relay) required between incoming lines and a VFD? The question goes to safety. If a contactor were used before the VFD and an e-stop engaged then the motor will coast to a stop (i.e. VFD loses power) instead of stopping much faster if the VFD braking fucntion were used. It would make more sense to keep power on the VFD.

0 Answers   Pride Hotels,

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What is effect on in zone and out zone fault if CT chosen for phase side is Vk/2<5mA and Neutral side is Vk/2<15mA on REF protection of Transformer

0 Answers   ABB,

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why we are having many type of vector group in the transformer ,what is the use of it?

2 Answers  

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