Answer / bhatt

Earth pit resistance is measured by Earth tester, Earth
tester have four terminals P1,P2,C1,C2 i.e. Two potential &
Two Current terminals. while earth pit testing, P2 & C2 are
shorted and C1 connected to current spike(Conductive rod)
which should be drived into soil at around 30 meter
distance from earth pit and P1 is connected to potential
spike(Conductive rod) drived at around 15 mtr away from
earth pit in the direction of current spikes.By rotating
the handle of meter(in old meters) or by pressing test
button (in new type meter) one can get earth resistance.Now
Potential spikes are drived at different locations toward
earth pit and current spike side and a curve between
distance and resistance is plotted. Earth resistance will
be platue of the graph.In this meter current is passed
between earth pit and current spike and potential is
measured between potential spike and earth pit. Ratio
between Voltage measured and current passed thrugh the
earth is the resitance of earth pit.

Answer / satya narayan padhy

Earth pit resistance is measured by Earth tester, Earth
tester have four terminals P1,P2,C1,C2 i.e. Two potential &
Two Current terminals. while earth pit testing, P2 & C2 are
shorted and C1 connected to current spike(Conductive rod)
which should be drived into soil at around 30 meter
distance from earth pit and P1 is connected to potential
spike(Conductive rod) drived at around 15 mtr away from
earth pit in the opposite direction of current spikes.By
rotating
the handle of meter(in old meters) or by pressing test
button (in new type meter) one can get earth resistance.Now
Potential spikes are drived at different locations toward
earth pit and current spike side and a curve between
distance and resistance is plotted. Earth resistance will
be platue of the graph.In this meter current is passed
between earth pit and current spike and potential is
measured between potential spike and earth pit. Ratio
between Voltage measured and current passed thrugh the
earth is the resitance of earth pit.

Answer / salman hazari

Earth pit testing is measured by megger or earth pit tester. There are 4 terminals in megger. P1, P2, C1, C2, it means there are two potential terminals and two current terminals. while measuring earth pit resistance we have the requirement of 3 wires. one wire will be connected between one earth electrode which has drived in ground and P1 point of tester from a distance of 30 meters from earth pit. 2nd wire will be connected between one earth electrode which has drived in ground and C1 point of tester from a distance of 15 meters from earth pit. Both electrodes in opposite direction. Shorted P2 & C2 terminal by a small piece of wire. connect one wire to the Earth pit from shorted wire. Move the handle of megger. you will get the resistance value. As theoretically value should be 0 ohm. But practically it should be less then 1 ohm.

Thanks
salman Hazari
chief Engineer
Keys hotel
pimpri, pune

Answer / sabir khan

It's measure by earth tester

Answer / karthik.j

The earth pit resistance is measured by Megger meter. This
measurement will be done on every two months once in the site.

Answer / upen

It's measure by earth tester it must less then 1mega ohm 0.02 is better

Answer / susanta paul

Earth pit resistance is measured by Meggar.This measurement will be done on every year once in the site.

How many turns are there in primary winding? (In Transformer)

0 Answers   Philips,

WHAT IS THE USAGE OF Buckoltz relay IN POWER TRANSFORMER AND AND HOW ITS FUNCTIONS?

3 Answers  

How to find HT side and LT side(of a transformer),with the help of a voltmeter?

1 Answers   Odisha Power Generation Corporation OPGC,

IF alternator SCR value will be high means what happen in alternator efficency at operating power factor of 0.8

0 Answers  

On a 3 winding transformer YNynd11, how do you apply REF protection to the Delta tertiary winding that is supplying auxiliaries to a substation?

0 Answers   Kwekwe Polytechnic,

suppose we using 3 phase motor of 440 v means what range of C.T. is require for measuring current ?

9 Answers  

can we use HT cables for LT power supply ?

1 Answers  

how to determine kilowatts (real power) is used in energy meter? is it apparent power effect the disk rotation?

1 Answers  

12.5 KVAR capacitor 440V gas filled, Its used for windmill purpose, How can i know about microfarad value for this capacitor

2 Answers  

Why there are some equipment(i.e:TV) that using 2-pin plug instead of three? What happen if there is current leakage? Are we going to get electric shock??

0 Answers   College School Exams Tests,

what is the difference between 230v and 115v?

1 Answers   Bhushan Power Steel,

HI, I want to buy a new Xformer to my plant. what are the main parameter should I check ( Xformer rating is 16 MVA)

2 Answers