ALLInterview.com :: Home Page            
 Advertise your Business Here     
Browse  |   Placement Papers  |   Company  |   Code Snippets  |   Certifications  |   Visa Questions
Post Question  |   Post Answer  |   My Panel  |   Search  |   Articles  |   Topics  |   ERRORS new
   Refer this Site  Refer This Site to Your Friends  Site Map  Bookmark this Site  Set it as your HomePage  Contact Us     Login  |  Sign Up                      
Google
   
 
Categories >> Engineering >> Electrical Engineering
 
 


 

 
 Civil Engineering interview questions  Civil Engineering Interview Questions (3070)
 Mechanical Engineering interview questions  Mechanical Engineering Interview Questions (3287)
 Electrical Engineering interview questions  Electrical Engineering Interview Questions (13321)
 Electronics Communications interview questions  Electronics Communications Interview Questions (2362)
 Chemical Engineering interview questions  Chemical Engineering Interview Questions (416)
 Aeronautical Engineering interview questions  Aeronautical Engineering Interview Questions (77)
 Bio Engineering interview questions  Bio Engineering Interview Questions (17)
 Metallurgy interview questions  Metallurgy Interview Questions (79)
 Industrial Engineering interview questions  Industrial Engineering Interview Questions (163)
 Instrumentation interview questions  Instrumentation Interview Questions (2374)
 Automobile Engineering interview questions  Automobile Engineering Interview Questions (106)
 Mechatronics Engineering interview questions  Mechatronics Engineering Interview Questions (38)
 Marine Engineering interview questions  Marine Engineering Interview Questions (43)
 Power Plant Engineering interview questions  Power Plant Engineering Interview Questions (75)
 Engineering AllOther interview questions  Engineering AllOther Interview Questions (1195)
Question
what is the functioning of cvt in a substation?
 Question Submitted By :: Electrical-Engineering
I also faced this Question!!     Answer Posted By  
 
Answer
# 1
A capacitor voltage transformer (CVT), or capacitance
coupled voltage transformer (CCVT) is a transformer used in
power systems to step down extra high voltage signals and
provide a low voltage signal, for measurement or to operate
a protective relay. In its most basic form the device
consists of three parts: two capacitors across which the
transmission line signal is split, an inductive element to
tune the device to the line frequency, and a transformer to
isolate and further step down the voltage for the
instrumentation or protective relay. The device has at
least four terminals: a terminal for connection to the high
voltage signal, a ground terminal, and two secondary
terminals which connect to the instrumentation or
protective relay. CVTs are typically single-phase devices
used for measuring voltages in excess of one hundred
kilovolts where the use of voltage transformers would be
uneconomical. In practice, capacitor C1 is often
constructed as a stack of smaller capacitors connected in
series. This provides a large voltage drop across C1 and a
relatively small voltage drop across C2.
The CVT is also useful in communication systems. CVTs in
combination with wave traps are used for filtering high
frequency communication signals from power frequency. This
forms a carrier communication network throughout the
transmission network.
 
Is This Answer Correct ?    40 Yes 2 No
Zan
 
Answer
# 2
CVT stands for CAPACITOR VOLTAGE TRANSFORMER and used for
measuring the voltage in sub-station......






 
Is This Answer Correct ?    17 Yes 4 No
A.mishra
 
 
 

 
 
 
Other Electrical Engineering Interview Questions
 
  Question Asked @ Answers
 
if the supply frequency increases what happens to the motor load   2
it is used to measure the potial difference between two point?   2
Why we have use 3 & 1/2 core cable use for general electrical supply arrangement   1
Why Earth pits are inter connected Taj-Group 8
WHAT IS DIFFERENCEN BETWEEN CURRENT AND VOLTAGE?   5
a transformer runs by electro-induction principle like all motors.then why dosen't it rotate just like any other motor   2
What is an Automatic Voltage Regultor & what is its use? What are the general componets we use to design an Automatic Voltage Regulator..What are the factors to be considered for its design?   3
we hav seen in electric engine of trains only 1 wired slidng conecctn is there frm ovrhead line,howevr to complete a ckt in dc postv n negtv two conection has to b there...so where is tht negative is been connectd or where it is grounded...? ABB 5
What is power factof? RRB 21
How much energy save vfd if motor run on 50 Hz (full speed) Reliance 2
Transformer Secondary maximum current (max. load)   3
what is the reason of battery voltage is 12v maintain?please answer me.mail-psrinivasan20@yahoo.com CTS 1
 
For more Electrical Engineering Interview Questions Click Here 
 
 
 
 
 


   
Copyright Policy  |  Terms of Service  |  Articles  |  Site Map  |  RSS Site Map  |  Contact Us
   
Copyright 2013  ALLInterview.com.  All Rights Reserved.

ALLInterview.com   ::  KalAajKal.com