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Question
can we check the resistance of earthing electrode while it 
is connected with the neutral of UPS system
 Question Submitted By :: Electrical-Engineering
I also faced this Question!!     Answer Posted By  
 
Answer
# 1
No!! You will have to disconnect the connection which is
usually bolted to the earth electrode.

Then with earth megger you will have to test the earth
electrode independently.
 
Is This Answer Correct ?    1 Yes 0 No
William Lobo
 
Answer
# 2
It should be checked accordingly the resistance used for
the solid system earthing.
In low voltage system erathing, the secondry winding of
distribution transformer, low voltage generator or UPS
system are normally solidly earthed. Solidly earthing of
the system means that the system voltage will never exceed
the phase voltage.
 
Is This Answer Correct ?    1 Yes 1 No
Zan
 
 
 
Answer
# 3
now days simple measuring instrument are availsble eg:-
meco i have seen catloge by which without connecting to
Eatrh Electrode we can measure leackage current as well as
resistance of Earth point/Electrod.
 
Is This Answer Correct ?    1 Yes 1 No
Anil
 

 
 
 
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if we convert ampers into kwh or mwh ,which one formula use by us,pls tell me?   3
i need circuit star delta connection? L&T 1
I have 1500KVA transformer ,How much Maximum KW Load is allowed?   10
We have two Al.busbars each of size 125mm*10 mm connected in parallel.To increase the current rating ,can we connect third busbar of size 100mm*10mm in parallel to existing two busbars?In my opinion ,if we connect busbars of different sizes in parallel,then the busbar of lowest size will take much current.So this type of paralleling should be avoided .Am I correct? PDP-Steel 1
what are the types of cables?   3
what is the function of AVR in generator? how the generator maintain the frequency while varies the load?   1
what are eddy currents   1
How big (size) can the tertiary winding be in transformer? Can we load the tertiary winding, if yes then how much we can load it?   1
Why tripping not occur when the transmission lines (11KV & above) breaks? Doesn't we provide earthfault protection for it?   1
 
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