Answer / mskailash

lighting arrestor design is withstand only 1.5 or 2 times
of system voltage.if lighting is occur voltage and current
level is more it will bypass that voltage and current to
the earth.

Answer / rajnikanth

lightening works on the principle of corona discharge.the
sharp edges of the arrestor gets accumulated with charges
once a lightning of high voltage occurs.these charges are
then passed to the ground.

how much current a 100 sq mm busbar will carry?

1 Answers   ABB,

---

how to calculate of which rating transformer should be selected? take any example

2 Answers  

---

What are options used for earthing the switchgear.

0 Answers   KSEB, L&T, Siemens,

---

WHAT HAPPENS IF STARTER OF A FLUROSCENT LAMP IS SHORT CIRCUITED AND WE PUT THE SUPPLY ON?

1 Answers  

---

Is it reuired to use house service barcket for 31/2 core 300 Sq.mm cable,if the distance between pole & shop is around 2 mtrs only or can I hang the cable with GI support in air? upto what size of cable GI serrvice btacket is necessary?

1 Answers   HAL,

---

what do you mean by 1 ton in AC`s

36 Answers   Bhel, Bosch, ITC Infotech,

---

LT cable fault chaecking equipment and to find out the distance at what distence it failure . Name and where it is available?

0 Answers   Himatsingka Seide Ltd,

---

hello if any one have papers vof hpcl or sail, plz send me

0 Answers  

---

What are armoured cables?

2 Answers   IOCL,

---

what is the function of step up transformer?

2 Answers   DEWA,

---

what is a tri vector meter? what are the tri vectors?

2 Answers  

---

what is different between 51N and 51G functions relay?

1 Answers  

---