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3 comments
Participant

Join Date: Mar 2012
Posts: 1

Terrameter Circuit Diagram

03/26/2012 5:02 AM

Please, i'm looking for a circuit diagram of an earth resistance meter (terrameter) for a personal project. I'm hoping i can get a positive result

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Anonymous Poster #1
#1

Re: TERRAMETER CIRCUIT DIAGRAM

03/26/2012 5:12 AM
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Join Date: Mar 2012
Posts: 22
Good Answers: 1
#2

Re: TERRAMETER CIRCUIT DIAGRAM

03/26/2012 5:54 AM

check the manual in the link below

http://www.abem.se/files/upload/SAS%20300%20Manual.pdf

hope this will be useful...

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Guru

Join Date: Jan 2008
Posts: 1756
Good Answers: 59
#3

Re: Terrameter Circuit Diagram

03/27/2012 10:57 AM

For a personal proiect you only need the principal circuit, and quite bit of work. This will enable you to measure ground impedance at your convenience.

You need to pump AC current into the ground. Then in its path you measure the voltage drop, current free. First you need a transformer to make the current source ground free. Then you wire a lightbulb in series to limit the current. Pound 4 stakes into the ground 25 cm, or so apart into the ground.

Feed the outside two, and measure the current. Measure the voltage drop on the inner two. Calculate. Repeat.

By the way, it is not my invention. The standard giving body IEEE does it this way. Anything beyond this is fluff and convenience.

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