What should be the earthing resistance of an industrial
substation and also What should be the house hold earthing
resistance?
Answer Posted / pijush kanti pal
not more than 2 ohm for good earthing
Is This Answer Correct ? | 20 Yes | 7 No |
Post New Answer View All Answers
How you calculate the repturing capacity of a HRC fuse
what happen if the supply is given to the stator of the 3phase induction motor with out assembling the rotor ?
how to compute kvar in substation feeder to improve power factor and sending voltage
how calculate gd2 of ht motors
draw the block diagram of fire alarm?
What are the different types of transformers?
given data are load current & power factor cable core size? plz any one update the calculation formula
If not into production, how far did you follow the design and why did not you see it into production?
What are the causes of having an rmu explode after installation? And how do u treat the bushings of an rmu?
what is saturation kit?which use above 15 kw motors panel side.
what is advertised hop count
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.
how to calculation increase capacitor,increase power factor for three phase.
Is any AC drive(VFD) had a feature of DC injection braking? if available please mention the detail. i.e drive can supply braking torque when the motor in idle state.
what is the power rating of CPU, CRT type moniter, LCD type moniter,scanner Approx.