Answer / sureshbabu

for the grid connected system the earthing value must be
below the limit of 1 ohm
for the individual connected system the earthing value must
be less than 5 ohms
this is the IEC standard for earthing and bonding

Answer / k.prakashchandra

In case of stations ,the maximum recommended values are
33KV-5 ohm, 66 KV -2, 110 to 400- 1.0 and generating station
-0.5.

Answer / simon

1 Ohm MAX in domestic purpose.

Answer / mohan babu bommu

there is no hard and fast rule in large sub stations 1ohm small substatioms 2ohms ither places up 6ohms permissable

Answer / sandip

UP TO 10 OHM IT IS OK

how can i get the entrance exam papers

0 Answers  

at present how many EHVAC lines are there in India?

8 Answers   HCL, L&T,

What are the no-load losses for the 11000/415V transformer with the following rated capacity? 1.1500 kVA 2. 2000 kVA 3. 2500 kVA 4. 3000 kVA

0 Answers  

What is the generating voltage of a power station consided generally?

20 Answers   L&T,

what is the internal fuction of a ceiling fan?

2 Answers  

in soft starter system for 375 KW 3 ph induction motor for multi stage vertical pump, two thyristers failed causing shorting of thyrister. the motor winding failed while starting.What is the cause and what is the effect in above case

1 Answers   KPCL,

hi friends iam collecting details about motor,generator & transformer so send some web links to about motor,generator & transformer ,please help me .i need your help.thank u

4 Answers  

why do we have spikes enough to burn electronic boards, when generators are not grounded

0 Answers  

what is vA rating and class of a ct.

0 Answers   L&T,

Frequency in the control system represents? Continuous system in time domain ? In frequency domain?

1 Answers   CCP,

What are the application of filter?

0 Answers  

What happens if you give supply to the rotor of three phase induction motor?

11 Answers