Answer / hareesh k.s.

actually PT is step down the voltage in large margin for
eg.110KV/110V.ie secondary current is very lage in
comparison with primary such as 1000times.therefore if
there is short circuit in secondary terminals or open
circuit in primary pt will burnt.

Answer / k.prakashchandra

1) contamination of oil and insulation failure 2)lightning
stroke 3) over voltage4)over current and overheating

what is allowed value of zero sequence impedancce of 6.6 kv nuetral earthing transformer ?what is the actual value

0 Answers  

---

What is the difference between surge and impulse?

4 Answers  

---

why do we use spark detector inside the slip ring brush compartment 0ona slip ring induction motor?

0 Answers  

---

what is the minimum pay scale for electrical engineer (building construction)in kuwait? plz revert back with yrs of experience & pay scale respectively.

0 Answers  

---

If Earthing is poor in a DB of of Residential Building, will residents feel a leakage voltage in a Electrical Ssytem? is this statement true?

1 Answers   Dolphin International,

---

What is the permissible value of earth resistance!

11 Answers   Torrent Power,

---

How power cable & control cable can be differentiate from each other ?explain?

14 Answers   Aster, Finolex, TCE,

---

what is XLPE type cable

8 Answers   Areva,

---

in battery charging room we find two fuses (one in positive other in negative cables ).why it is so?one fuse is ore than sufficient?

0 Answers  

---

What is electrical energy ,power?

2 Answers   ABB,

---

Connection diagram for KW meter and  Kva meter

0 Answers  

---

We have a 12MW power plant & we inject 5-6MW power to Orissa GRID. For this we have a 33KV/11KV switch yard having 12.5MVA power transformer. Some times we draw power during emergency. It is observed that during Export or Import for load less than 500Kw the power factor is decreasing to 0.3 . This is happening only during export or import. During island condition TG power factor OK.Our capacitor bank is provided with our Power plant auxilliary load. Please suggest how I can we improve our power factor during low load (GRID).

3 Answers  

---