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Current sensing with 0.33 volt CTs

Submitted by Guest on Tue, 14/06/2011 - 14:02

I have some 0.33 volt CTs that I'd like to use with this project.  What changes would I make to the current sensing circuit?  I'm assuming I don't need a the burden resisiter because my output is already in volts.  

 

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glyn.hudson's picture

Re: Current sensing with 0.33 volt CTs

Submitted by glyn.hudson on Wed, 15/06/2011 - 21:05.

Hi Scott216,

I am not familiar with that sort of CT sensor. Do you have a datasheet for it? 

Glyn.  

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Scott216's picture

Re: Current sensing with 0.33 volt CTs

Submitted by Scott216 (not verified) on Thu, 16/06/2011 - 01:27.

I see them quite a bit in commerical office building where they submeter the tennants. Here's link to a couple I've seen.  I have both of these:

http://www.magnelab.com/products/Current-Voltage-Sensors/Split-Core-AC-C...

http://www.dentinstruments.com/media/50A_Mini_Hinged_CT_Specs_112310.pdf

 

--Scott

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glyn.hudson's picture

Re: Current sensing with 0.33 volt CTs

Submitted by glyn.hudson on Thu, 16/06/2011 - 19:47.

Hi Scott,

Just looked at the website and datasheet. Yes your correct, you don't need a burden resistor. No other changes to the circuit should be necessary. 

Good luck, Glyn.  

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