Answer / subhendu

1.eliminate 3rd harmonics
2.eliminate voltage unbalanced partially.
3.used in 1 phase distribution system

Answer / marsad

In a transmission system star connected transformers are preferred than delta connection.. .
Usually the star point is earthed and connected a neutral current transformer in series with the neutral point and ground.. and works as a 3 phase 3 Wire system..
Whenever an internal fault occurs an unbalaced current Flows through the neutral point and then through NCT if the neutral current above a limiting value a relay connected from NCT (called restricted earth fault relay) will actuate.. Which will trip the transformer and protects it.. This can only be done in star connected transformers..

Answer / engr ali azaz

its used for simly grounding

Answer / gravityguru

it provides a point to create potential difference...
between R-N, Y-N. B-N phases....this is in case of 3phase 4
wire system................
hence we can connect balanced or unbalanced load to different
phases

If you see the HRC fuse name plate. Its shown ampere rating shown which is in many KA (like 80KA and so on). any body explain what is meaning of this value?

7 Answers  

---

What is the Different b\w Circuit Breaker & Isolater

11 Answers  

---

How can we connect additional batteries to three phase ups? What are parameters we have to check when connecting?

0 Answers  

---

what is the formula for transformer oil?

1 Answers  

---

how will you determine the short circuit capacity of a network

3 Answers   Dalkia,

---

---

Hi! iam Rajanikanth.Can u tell me FAQ's of AP TRANSCO.

1 Answers   APTransco,

---

What are the main parts of VCB?

12 Answers  

---

how to calculate the lightning arrester conductor @ no of earth pits required

0 Answers  

---

tell me about your project

1 Answers  

---

Who we calculate the generator NGR resistant, generator voltage 11 KV ?

2 Answers   ABB,

---

is there any lightning by passer is arranged in ship like buildings?

0 Answers  

---

Define branch?

0 Answers  

---