WHERE to use CVT & PT.

Answer Posted / ali

We have 2 types of VT in the power systems:

1- Inductive Voltage Transformer (VT or PT)
2- Capacitive Voltage Transformer (CVT)

The main difference between VT and CVT is that the CVT is
based on capacitive voltage divider principle which steps
down the high voltage to a lower voltage level that can be
measured easier. This can make the VT much less bulky (save
space) and also less expensive. This is why that for voltage
levels up to 132 kV, it’s common to use conventional VTs but
at voltage levels more than 132 kV we use CVTs.

Is This Answer Correct ?    11 Yes 4 No



Post New Answer       View All Answers


Please Help Members By Posting Answers For Below Questions

I have a drawing of a wound rotor induction motor for a crane. This crane motor has 5 forward speeds & 5 reverse speed implemented of course with different amount of resistance for each speed setting selected. What has got me scratching around is the fact that 8 of the 10 speed selections switch in uneven (unbalanced) amounts of resistances on each of the 3 connections to the motor's rotor.Can this be possible? I would have assumed this would produce unbalanced rotor currents and therefore vibration in the motor. I would greatly appreciate anyone's comments on this. Many thanks, Confused.

1412


Could the power factor on electrical system can affect the registration of the kwhr meter or the CT/PT? 

1460


explain which quantities change in the starting and the and the running condition in induction motor

956


how to remover corona effect and hysteresis losses from contactor

1568


WHAT IS SUBSTATION & ACCORDING TO VOLTAGE HT,EHT SUBSTATION EXPLAIN IT

2695






what is the sludge current

1566


Whata are the types of Cables?

1603


the typical output of a solar cell is........

1845


What is the vector group of a transformer,how can it be found out?

1575


What are the basic component of a cro?

759


how many Classification of fire extinguisher

1675


im working in one private compeny in gujarat. i was complet diploma electric in 2010 from gujarat technical board. now i want electric supervisor licence in gujarat but i dont't know when i apply? plz give me address of the licence dippartment office in gujarat. gandhinagar

1422


. What is Electrical Life & Mechanical Life of Circuit Breaker? 2. What is Electrial Life & Mechanical Life of Magnetic Contactor? 3. What is RCD, RCCB & RCBO? 4. What is the Between defferance of RCD, RCCB & RCBO?

2836


Can we use Ccapacitive voltage transformer directly for metering purpose?

1130


How will you justify IR value and Charging voltage of any motor,transformer and Cables.......???? . . . . . . . . Plz tell me any body Baljeet Singh, engineer_89@refiff.com

1626