Answer / zan

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.

Answer / a.mishra

CVT stands for CAPACITOR VOLTAGE TRANSFORMER and used for
measuring the voltage in sub-station......

What is BKW of Motor. And what its significance

1 Answers   CGL, PK, Thermax,

---

why control circuit voltage always chooses to be 110v and 220v? and in where it is 110v and 220v? and in where it AC and DC?

2 Answers  

---

what is the function of NAT & NAC contacts in breaker control switch (TNC)??

2 Answers  

---

what is meant by class 1 E in electrical power supply?

0 Answers  

---

I AM DOIN MY 3RD YEAR IN ELECTRICAL ELECTRONICS. PLEASE SUGGEST WHAT DO I DO NEXT AFTER MY B.E? AND I WANT TO GET INTO ANY PSU IS DER ANY EXAMS PLASE SUGGEST EVEN THAT.

3 Answers  

---

---

How to decide DO set rating of Transformer?

0 Answers  

---

why frequency should be constant?

2 Answers  

---

Why the tank of transformer is made rectangular not circular??

9 Answers  

---

Can transformer develop three phase power from a single phase source?

12 Answers   ONGC,

---

wwht is wave trap used in ht line

4 Answers  

---

What is disc insulator and it's application..?

2 Answers  

---

We've 2 diffrent DG's with same capacity (500 KVA). Can we sync them ?

1 Answers  

---