What should be the earthing resistance of an industrial
substation and also What should be the house hold earthing
resistance?
Answer Posted / abhaya raj singh
according to IEEE maximun value of earthing can be 5
ohms.But for a substation it should be less than 2 ohms.
| Is This Answer Correct ? | 17 Yes | 19 No |
Post New Answer View All Answers
What is the rating of circuit breaker needed for 300 KVA load in 33 KV supply line in a transformer of 33 KV / 415 Volt ?
What is FTA card? How it works?
what are the components in electrical control panel (for example: 415V, 3-ph, panel to operate utility and 3-ph DG set).
What is the distance between body earthing and neutral earthing.?
kVA rating of ordinary transformer is increased when connected as an auto transformer because A transformation ratio increased B secondary voltage increased C energy is transferred both inductively and conductively D secondary current increased
How do you determine the size of transformer radiators in a transformer?
Please clarify, 1. Is it required to lay two runs of GI wire along with Armoured LT cable if it is laid between one big mains (63Amps TPN SDF) to small main (32A TPN SDF) with proper glanding termination? 2. If the armoured cable with proper glanding is laid from DB to CNC machine, is it required to run two runs of body earthing to the Machine from DB? 3.If the armoured cable with proper glanding is laid from Substation to Hangar, distance is approx. 100 mtrs, is it required to do earthing at shop area though the primary termination at substation is earthed through gland.
why ten delta testing is carried out on power transformer
we have provided 30 nos. relay contacts in panel.I want to know how do we do the numbering for the relay contacts as per any applicable standards
What are linear and non-linear systems?
what should be the acceptrd value of winding resistance for 2.5MVA transformer
What is the rating of a circuit breaker needed for 300 kv load in 33KV supply line of 33/415 transformer ? Whether 800/1200 amp vaccum circuit breaker can perform for a 33 KV line in input in 415 volt in output of the transformer ?
Types of test in Switchgears, MCC, NGR and DB's how it should be procced. Can anyone give me the details here or email me to pasuvaraj.k@gmail.com
how to calculate compresor capacity?
why co incidence factor considered in transformer sizing?