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Anonymous Poster

Testing High Resistance Grounds

01/06/2009 4:48 PM

In the near future my company is commissioning a new data center with a high resistance ground system. The system has 70 ohms of resistance on a three phase 600VAC configuration, any ideas on how to test the system?
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Anonymous Poster
#1

Re: Testing High Resistance Grounds

01/07/2009 9:26 AM

Use an earth resistance tester. Three rod method or four rod method will do.
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electricaleng
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Join Date: Aug 2011
Posts: 76
#4
In reply to #1

Re: Testing High Resistance Grounds

08/24/2011 1:56 AM

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bohara
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Join Date: Jan 2009
Posts: 4
#2

Re: Testing High Resistance Grounds

01/07/2009 1:20 PM

Should have been more clear on my intentions. We wre using a Post Glover system to monitor the ground current wit hvarious zero sequence CTs throughout the plant to locate faults. Would like to prove the functionality of the entire system.
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Life2k
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Join Date: Nov 2008
Location: Based in Dubai ! Love life.
Posts: 16
#3

Re: Testing High Resistance Grounds

01/09/2009 2:46 AM

Use Wenner 4 Pin method to establish Soil Resistivity.

correct Earth design is very critical for sensitive equipment safety & fault-free functioning.

There was a recent loss of above billion dirhams for equipment recently to a data center in UAE.

earth.dxb@gmail.com

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