Answer Posted / n. gopala krishna

difference between vcb and acb. vcb is vacume circuit
breaker acb is air circuit breaker . in vcb switching
contacts fixed in vacume cylender. in acb switching
contacts arranging in openly in airbut other all mechanisim
is same both breakers having closing coil and tripping coil
and spring charge motor all are having but vcb breakers
using in high voltage side to reduse the arc at on off
time. but acb can use in low voltage side only

if we have 320KVA Genset kindly advice how much load we can put it.

1529

---

WHY IL=IPH IN STAR AND WHY IPH=IL/1.732 IN DELTA? WHAT IS REASON BEHIND IT?

6360

---

What is the role of Dedicated earthing in UPS System?

3101

---

How to calculate the no of Ceiling fan (1200mm sweep) per unit area?

2079

---

state basic meaning of 'INDUSTIAL AUTOMATION'?

1945

---

advantages & disadvantages of Lagging and leading power factor .

9626

---

What is meaning of out of phase (making & breaking) capacity And how to calculate

2248

---

is that a problem if i connect a single phase load to a secondry delta connected transformer but i get a neutral from other transformer i the system?

1861

---

what is method for testing CT

2150

---

why booster transformer is used in sumpners test conducted on transformer????

3582

---

what is meant by vector group of a transformer? How can it be derived?

2008

---

How to calculate ant test the burden of Current transformer

2455

---

how to test power transformer.YNd11

1566

---

What is the alternate solution for testing of polarity by using polarity tester while its milli ammeter does not works?

2040

---

i m in need of current rating chart of heavy duty pvc/xlpe, cu/al cables. can somebody provide me? if yes, plz send me at ashish_patel111@yahoo.com

2016

---