Answer / raveendra nath

normally Voltage Transformers are designed on the basis of
insulation grading to minimise the cost.
(i.e Voltage level decreses towards neutral, So while
designing, Insulation level will decrease when going
towards neutral )
So, transformer nuetral must be at earth to keep it at zero
potential and to avoid any flashover under fault conditions.

Answer / akhil.goyalanager1985

BECAUSE PT ARE CONNECTED IN PARALLEL WITH THE LINE

HOw can we calculate power factor at HT side.

6 Answers  

---

I have suguna 3 hp pump for my agreeculture work.It deliver the water from 45 feet well .I suffered by powercut.During powercut i got 2phase supply only .My question is can i run the pump in 2 phase supply using capacitor?.Can u explain me how to connect the capacitors?

2 Answers  

---

Why all voltage level are multiples of 11, like 220V, 440V, 1100V instead of 200V, 400V, 1000V?

9 Answers   Indian School of Mines,

---

I WANT TO INSTALL LIGHTING ARRESTOR ABOVE 20 FEET HEIGHT INDUSTRIAL BUILDING. NOW IT WAS 15 FEET HEIGHT HOW MUCH DISTANCE IT WILL COVER & HOW TO CALCULAT THE DISTANCE COVER BY THE ARRESTOR

0 Answers  

---

What is difference between earth leakage relay and restricted earth fault relay ?

22 Answers  

---

---

What would cause a 240v choke that should give 110v out on a 16w lamp to gradually increase to 160v?

0 Answers  

---

How can you limit the fault level in a power system?

1 Answers   Alfanar,

---

A current of 2A flows for 10 hour through a 100 ohm resistor. The energy consumed by the resistor is:(a) 0.5 kWh(b) 4 kWh(c) 2 kWh(d) 0.02 kWh

3 Answers  

---

Can any one tell me the current VAT, Sales Tax, Octroi and Excise duty for the financial year 2009 -2010. Say control panels are manufactured in maharashtra, then what will be the taxes for within Maharashtra and outside Maharashtra?

1 Answers  

---

what could be the reason of a burnt current transformer in an electrical panel

1 Answers   ERWAT,

---

why do mostly prefer to generate and distribute electricity in 3 phase..not in 4 phase or 5 phase.??

5 Answers   BSBK, IOCL, NTPC,

---

what will happen if i connect or change line with phase terminal

1 Answers  

---