Interested to Buy Any Domain ? << Click Here >> for more details...
how to check the earth resistance value& what is the
minimum earth resistance for good earthing sysytem.
- 33 Answers
- 154751 Views
- Brookfield, BSNL, DMRC, Epoch, KPTCL, Polycab, Power Control, SIEA, Siemens, Wipro, I also Faced
- E-Mail Answers
Answer Posted / praveen kumar jain
As such there is no any standard of earth resistance value,
Its varies on different type of soil resistivity. Idley it
should be 0, but in different kinds of soil for electrical
equipment it should be better to below 10 Ohms and for
electronic equipment it should be better to below 5 ohms.
| Is This Answer Correct ? | 100 Yes | 28 No |
Post New Answer View All Answers
i want some interview related questions with their answers which can help for attend the interviews...
why power factor is important?
Testing report of Earthing of 3.15 MVa PTR.
explain different losses in a transformer.
Define what is power quality meter ?
what is the main function of capacitors in mccs.
What is the function of Governor in Hydro Power Station? What is the Function of Lightning Arrestor Voltage Transformer (LAVT)?
Define corner frequency?
I am getting above 60 V as open delta voltage against single phase unit ICT at tertiary delta formed and ICT getting trippped on NDR. ICT tested and found in order. PTs provided on tertiary are tested and in order. what may be the reason?
What is transient Phenomenon?
Explain difference between stand by earth fault and residual earth fault protection?
what is V.L.F. testing of power cable? do you know the voltage ratings, like for what rating and size of cable what rating of V.L.F. testing is used?
When and where resistance earthing is used ? How to calculate the time constant for earth fault
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...
what is the purpose of bypass mode in energy lighting transformer?
