WHY EARTHING NOT NEEDED IN BATTERY IN SUBSTATION?
- 5 Answers
- 14213 Views
- L&T, I also Faced
- E-Mail Answers
Answer Posted / prasoon
In a HV Sub station, 220 Volt system is not earthed to
avoid mal operation of DC controlled electrical elemnets in
case of a earth fault.
50 Volt system is earthed (-ve). This is done as 50 volt
system is used for electronic circuits where -ve voltage is
required to opearate npn transistors.
| Is This Answer Correct ? | 7 Yes | 6 No |
Post New Answer View All Answers
what is the minimum pay scale for electrical engineer (building construction)in kuwait? plz revert back with yrs of experience & pay scale respectively.
direction of tarbine& genrator
What is the importance of counter based plan & how is it scheduled?
what are inductive and capacitive voltage transformers.what are their applications
what is distribution board?
What happens if i apply 500V to 440V rotary Switch ?
In ups static switch if i gives the supply at output end it will open the circuit in stactic switch or not if it will open then how it operates.
What do you mean by Stimulastion Test in Diesel Genarator / Why & when it's conducted ?
plz tell me,ht and lt panel terminals in substations explain beiefly
Whether amorphous core transformer is available in India?.If available then up to what rating of voltage and KVA?.
why different series of vfds (like allenbradley)are used in industry ?
What should be the Sandwitch type Al. bus bar capacity for 2 M.W.Gen. set, having continuous full load current- 3463 Amps,ambient temp.- 50 Deg. C., Required temp. raise-20 deg.C., it will run 24 hrs, 365 days on full load, required highly reliable.
what is the standard values(Megger test) of resistances between L&N,L&E and N&E for a system on IEE regulations?
WHAT IS FAULT CAPACITY OF HT MOTOR TERMINAL BLOCK? ANY BODY HAVE ANSWER PLZ....POST IT.
How To Convert Apparent Into Real Power Without Knowing Reactive Power?
