Answer / irfan khan

pt is the pottential transformer which uesd for measurement
of voltage as well as control supply also.the high voltage
can not be measure directily , e.g. incomer voltage is 132
kv so we put the bus pt of 132kv/1.732/110 volt /1.732 for
6.6 kv voltage measurement . the voltage of primarry and
seconderry may be vary acordingly.gernelly the seconderry
of pt voltage is 110 volt or 220 volt AC. so seconderry
voltage can be used measurement as well as protection.

Answer / ashish

bus pt is control transformer which are required for
circuit control.because we can't use the high voltage in
control circuit.

how to test a motor from megger

5 Answers   JSW,

---

what type of motor is used in washing machine

8 Answers  

---

what will happen if the bus PT fuses are accidently removed from the circuit in 6.6kV feeder?

1 Answers  

---

what is the different between surgearrester and lighting arrester

4 Answers   HPCL,

---

why neutral used in three phase motor connection?

3 Answers   BEL,

---

---

Why transformer neutral is earthed

7 Answers   Hyundai,

---

if u want to buy a motor than what will be the configuration of that motor?

2 Answers  

---

To test Transformer we give HT side 440V to see wheather that it is producing 17.6V on LT to verify Voltage ratio is correct or not but when we give the 440V voltage to LT side then what will happen to HT voltage ?

3 Answers   Aditya Birla,

---

what is the use of Reactive power

2 Answers  

---

explain the working principal of the circuit breaker?

5 Answers  

---

What is the permissable nutral current of three phase system as per IS standards?

0 Answers  

---

HOW DO I CALCULATE OVER LOAD RELAY & CONTACTOR IN DOL STARTER? & in dol why it is require circuit breaker?

6 Answers   DLF,

---