Answer Posted / narasiman kannan
A VT is a voltage transformer used for measurement &
protection purpose. It is small in capacity as compared to
power transformer. VT & CT are generally classified as
instrument transformers. A CVT is a Capacitor oltage
transformer which is associated with a stack of capacitor
voltage divider. As an example, if there are 2 stacks of
55KV capacitors in a CVT(connnected between one phase &
ground), the actual VT primary winding is connected across
the lower 55KV stack (lower stack to ground). By this, you
save the cost of primary winding & insulation. While a VT
has higher accuracy, CVT has less accuracy and high phase
angle error. CVTs are use for voltage measurement &
synchroniser supply and not for power relays & power
measurement where accuracy is important.
Is This Answer Correct ? | 0 Yes | 2 No |
Post New Answer View All Answers
if negative of DC supply used and positive is grounded through EGB, and if ELCB used in the system then is it sense the positive volatge and get tripped is it possible?
How to Calculate the Fault Level of Electrical Installation
Explain what is rated speed?
Iwould like to know barc interview questions
Do closed loops systems require manual input?
if the motor rated speed is 950rpm. how to change the above rated speed? is it possible?
As a electrical engineer.. what are the basic norms should follow in transformer oil testing.. 1.What is the Electrode type? 2.How long time you will give for oil testing?
What is phase cross over frequency?
how can calculate resistance box for 15 kw, 6 pole, RV-230, RA-42 motor
Electromagnetic torque developed by the motor is compared to shaft torque. A less B same C depends on motor design D more
Is Transol transformer oil comparable to nynas nytro libra?
If there is major % of Voltage harmonics in the system, how can it be control or reduced?
critically criticize the application of ring main unit in power system
What are the material used for resistor?
Work done in a free expansion process is