what is the lightning arrester rating for 3.3kv system voltage

1 Answers  

---

what is stay bow?

2 Answers  

---

What is Electrical Engineering?

13 Answers   L&T, NTPC, Wockhardt,

---

what is the difference b/w pvc cu conductor and cu breaded wire..?

1 Answers  

---

List out the the types of Mounting Light fixture?

0 Answers   HLL,

---

What is transposition in a transmision line?

2 Answers  

---

How we can design a cable for a 3phase load.

3 Answers  

---

in star delta starter current is 1/3times the delta value how?

2 Answers  

---

I AM INTERESTED TO WIND A 3 PHASE MOTOR HOW I CALCULATE TURNS, PITCH,AND WIRE SIZE FROM STATOR DIMENTIONS

0 Answers  

---

Dear all, I just want to ask an expert on this forum for some insights. For the magnetic balance test, when applied voltage on a Delta-Star transformer e.g. Dyn11, the following relationships apply for HV side: 1.  H1-H2 = H2-H3 H3-H1 2.  H2-H3 = H3-H1 H1-H2 3.  H3-H1 = H1-H2 H2-H3 For the LV side also: 4.  X1-X0 = X2-X0 X3-X0 5.  X2-X0 = X3-X0 X1-X0 6.  X3-X0 = X1-X0 X2-X0 Is there a similar pattern for Y-d, Y-Y, D-d? And how about Y-z, D-z, Z-y transformers? I've tested a YNzn5 transformer and for LV side I don't see the pattern. In this particular case I got for LV side the following (see values below): H1-H0  H2-H0  H3-H0    X0-X1  X0-X2  X0-X3 128.0  119.9  7.2      29.2   13.3   15.8 70.7   128.4  59.2     23.4   22.0   3.6 7.2    120.1  128.1    13.4   29.3   15.8 What is the relationship here for LV? For row 1 I see the relationship, for row 3 I also see but it's shifted, but for row 2 I don't see such relationship. Any suggestions, answers, someone?

0 Answers  

---

What is the minimum setting in REF relay because i am facing some problem whenever power resumes after power failure my transformer is tripping because of REF trip. I am using CSPC make numerical relay(DIP switches). Now setting is 15 percentage. What is the reason for this triping. I sm waiting for answer

2 Answers  

---

why bulbs when connected in series glow dim

4 Answers  

---