What should be the earthing resistance of an industrial
substation and also What should be the house hold earthing
resistance?
Answer Posted / krishna naik
The earthing resistance of an industrial substation
should maintain always below 1 ohm. it measured of
resistance between earth plae and natural earth by ohm
meter. when earth resistance is near to zero means better
earthing.
The household earthing resistance somewhat slight above
1 ohm and below 2 ohm is the tollerable limit, but never
neglect above 2 ohm. the resistance below 1 ohm means more
safety.
Is This Answer Correct ? | 4 Yes | 1 No |
Post New Answer View All Answers
What is mean by spike arrester(Voltage Operated)
which protection used in power plant?
low frequency protection why recomend?
why different series of vfds (like allenbradley)are used in industry ?
What are your future plans for the company if permanently employed?
SIR, GIVE ME OPGW SAG CALCULATION FORMULA I AM DAE ELECTRICAL. THANKS
List out the the types of Mounting Light fixture?
For small size, high frequency coils, the most common core material is- a. )Air b. )Ferrite c.) Powdered ion d.) Steel
what you have to see after one week or month from the day of installation of transformer ?
Is it advantages of having star-delta vfd than normal star vfd , if yes why?
Explain the fundamental difference between emf (electro motive force) and pd (potential difference) ?
What will happen if i used 11KV earth ht kit to 11 KV / 11 KV cable termination?
Pls tell me whether we can use EN3A material for shafts of Permanent magnet alternator.What will be the effect of magnetic and nonmagnetic material for shafts on magnetic properties of PM rotor .
explain with diagram how to protect transformers and substations from over current with help of CT's?
for what voltage will reactive power be largest in 380 kv line : a) 375kv b)380kv c)385kv