how much earth resistance consider to commissioning the
transformer?

Answer Posted / aman arora

THE RESISTANCE OF EARTHING SHOULD BE 0 OHM BUT IT SHOULD NOT BE MORE THEN 2 OHMS IN TRANSFORMER CASE

Is This Answer Correct ?    1 Yes 0 No



Post New Answer       View All Answers


Please Help Members By Posting Answers For Below Questions

Why single phase induction motors are not self starting ?

1057


what is automatic voltage regulator?we can control the vlotage by using fuzzy controller in matlab?why we go for fuzzy?

1490


What are IR values and what it should be for coil and for insulator

2520


3 shows a 415 V, 3-phase generator supplying a 3-phase 415/110 V transformer. Draw the individual and combined impedance diagrams to a base of 10 kVA. Determine the system fault kVA and the fault currents at the 415 V and 110 V busbars for short circuit faults on the transformer input or output terminals. Work in p.u. values of impedances.

2241


what is power factor ? how we can calculate the low power factor and amount of capacitor for improve that low factor ?

1092






Why 30kw 40 hp 4 pole 3ph induction motor over heated?any steps on reduction in heat?

1257


Dear sirs, pls check this 4-20ma to RS485 module datasheet,pls guve me some suggestions. http://www.szsunyuan.com/sy/pro_more.asp?Productid=539 Thanks. E-mail:yunianjiang99@gmail.com

1679


generally in LT and MV motors we are using 3.5Coresx16,25,35,50 etc cable for supply.although motors is earthed at two point and having all protection.then why we are using that 1/2 core for earthing the motors.while in HT cable we are using only 3core cable for motor supply.generally lt and mv motors are delta connected and ht motors having star connection.whethere it is having any relation with winding connection( star or delta).all motors i am talking about are dol only.can anybody solve my confusion.thanks...

1546


How to calculate no of EARTH PIT? Describe the formula as per IS standard?

3195


All the socket in a room become very hot, the Wall was also became very hot and the earth conductor also became live, what in your view might be the possible causes?

1212


HOW THE OLTC TRANSFORMER SAVE ENERGY IN COMPARISON TO OFF LINE TRANSFORMER AND IS IT ECONOMICAL TO REPLACE THE OFF LINE TRANSFORMER TO OLTC TRANSFORMER

1718


give some advantages and disadvantages of combiniing the session, presentation, and application layer in the osi model into one single application layer in the internet model

2240


What is George phenomena to start the synchronus machine?

3649


do you have some of interview Questions in power and genrator section in general whith answers

1642


What is the capacity of the Fastners 12mm?

1904