how to calculate the earthing conductor & no. of earth pits
required
Answer Posted / mrutyunjay
Dear Sudhakar Sir,
Greetings of the day !
Recently I have been through one answer shared by you and got your email id at AllInterview.com. Please kindly help me in my below concern :
Permissible current density equation i = (7.57*1000) / sqrt(resistivity * duration of earth fault) as per IS 3043
Is this equation to be taken for all types of electrodes ( Plate, Rod or Pipe & Strip ) ?
Because , as per IS 3043, same equation is appropriate for plate electrode
| Is This Answer Correct ? | 1 Yes | 0 No |
Post New Answer View All Answers
a 230v transformer with step down ratio 19:1.it has 2000turns on primary and rated 25va calculate max primary current no of secondary turns volts/turn
What is the Minimum winding resistance of motors ( small & big)? referance range
How to identify the start and end of 3phase 12 lead motor if U1, U2, etc numberings are lost or erased.
how we calculate torque ? how we improve it ?where torque will either motor or generator ?
how can we say that stator magnetic field rotates with synchronous speed?can we derive?
please send me RRB electrical engineer previous year questions for Sr. Section Engineer
how to calculate earth fault relay current and CBCT ratio
What is the function of the generator exciter?
why the rotor current becomes in steady state during high slip region? please verify with equations.
Earth bits close or open. Which is correct
How time response of the system is divided?
what is LSR?
Single line diagram for dbb (double bus bar)system.
the winding of Generator and Motor is star or in delta ? and why
How to do stting of vl250 siemens MCCB