Answer Posted / priyanka dhar

Lightning arresters are installed inside the distribution
board and they protect against surge volatges in case of
direct lightning strikes.

surge arresters are installed in sub-distribution board as
well as in terminal equipment thus protecting against surge
voltages due to distant lightning and due to internal
switching operations respectively.

EXPLAIN WHY THE SURGE CURRENT RATING OF AN MCCB OR CIRCUIT BREAKER DECREASES WITH INCREASE IN THE RATING OF MCCB OR CIRCUIT BREAKER.

1963

---

why dimmerstate always connected in star connection? what will happen if it connected in delta?

2002

---

What is the abbreviation of NGT panel

1980

---

my UPS suddenly goes off and all panel light also blow off.This happens even main electric supply is not interrupted.After some time it automatically starts functioning normally.Batteries are new.

1993

---

i need to now what will be the cable size to the following load, transformer to distribution panel distance 110m, load 1000kw, voltage 400v, pf 0.85, permissible voltage drop 2.0%, overhead line, atmospheric temperature 35 degree c.

1570

---

How can we choose the rating of submersible motors

2576

---

How maesure earth neutral value & how much maximum value value required in between earth & neutral.

2015

---

how to calculate the battery AH

2706

---

Hi, This is Laila. I am selected for syndicate bank interview. Could you please share your views and the questions asked if you have faced the interview My email id is laila_honey09@yahoo.com Please send as fast as u can.Thank You Thanks... Laila.

2052

---

Write a note on Treatment for electric shock.

1854

---

what about the power of wattmeter at starting and loding?

2030

---

Is it possible to make a 5P10/ CT Ratio 50/1A Burden 5VA

1679

---

How do you calculate the actual power consumption of an inductive load appliance. Say, a deep freezer of 200watts

2084

---

What is an order of a system.

1253

---

what is transformor oil gread

2456

---