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Topic Title: High Accuracy Loop Impedance Tester
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Created On: 08 December 2009 12:45 PM
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 08 December 2009 12:45 PM
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Inrush

Posts: 689
Joined: 19 December 2007

I'm sure this has been covered on more than one occasion before, but can anyone recommend a high accuracy loop impedance tester that can be used for testing in close proximity to a DNO TX (within 10 metres of a 500kVA unit)?

I do recall someone has mentioned a meter with four digits in the past?

Obviously the values can be obtained by calculation using the transformer impedance /reflecting the primary impedance into the secondary (knowing the H.V fault level), but I just thought I'd ask.
 08 December 2009 12:50 PM
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intrinsic4225B

Posts: 1621
Joined: 30 September 2004

Originally posted by: Inrush

I do recall someone has mentioned a meter with four digits in the past?


Careful not to confuse resolution with accuracy. It is entirely possible to have an instrument with a high resolution but a low accuracy!

-------------------------
Ross Currie TMIET
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