Answer / ramaswamy venkatachalam

At the factory, it is tested by applying twice the voltage.
ie, 2U. If a dc kit is used, (2U)/sqrt(2) + 1 KV. Which is
a minimum of 48 kV. You can use 50 kV test kit for the same.

Convert the ac rms voltage to dc by dividing by sqrt(2) and
multiplying it by 2 and adding 1kV to it.

Answer / gunaskaran

for ac 0.8(2E+1) normally we r doing in ac if customer
asking we can do the dc for DC (2E+1*1.414)0.8 this 1.414
is AC to DC conversion this for site for factory we have to
applie 100% voltage

what will happen if phases are not shorted with neutral in transformer impedance test? and if neutral is not connected with ground?

1 Answers  

---

Name the test signals used in control system

0 Answers  

---

I have 12MW gas engine based power plant its running parallel with grid. my problem is When cpp run in island mode(without geb) that time geb transformer power factor is 0.2 lagging. When cpp run with parallel that time power factor is 0.94 lagging So how can i maintain power factor ofgeb transformer in island mode 0.9 lagging?

1 Answers   SPCL,

---

how power factor improves by connecting syncronous motor

2 Answers   ACC,

---

what the principle of sincroscope?how it works?when it needed?

0 Answers  

---

---

What is SF6 Circuit Breaker?

2 Answers   Amdocs,

---

At what load maximum effiecency will be obtained Distribution transformer and Genarating transformer Pls clarify?

4 Answers  

---

What is Scheme Test of High Voltage Switchgear. Which tests it includes.

0 Answers   Siemens,

---

What is OLTC AND RTCC and it's function?

2 Answers   Sterling Wilson,

---

Can anybody explain Why starters are not used for motor starting in industries?

9 Answers  

---

what is the difference between RCCB and ELCB?

3 Answers  

---

What is SMPS,How does it works?

4 Answers   Bharti, TCS,

---