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bvarner / PZCT-02-BurdenShift

Resistive burden & level shift to convert PZCT-02 Split-core Current Transformer output to ADC input voltages.
MIT License
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Exploring alternatives to PZCT-02 #2

Open jalakamkiranadspl opened 3 years ago

jalakamkiranadspl commented 3 years ago

Hey @bvarner, Thanks for the design. It shares good knowledge. I am trying to find an alternative current transformer for the PZCT-02 which is rather very expensive. Initially I found the turns ratio to be 1000:1 with capability of measuring 100A. Did you come across any of them? I know this is completely unrelated to your repository but I thought you might shed some light on this since I am trying make the circuit out of it.

bvarner commented 3 years ago

Yes, at $7 / per unit the PZCT-02 is a bit of a high price point compared to smaller diameter transformers.

Searching aliexpress for 1000:1 current transformers I found quite a few there. IIRC you also need to account for the impedance of the transformer when sizing burden resistors. Good luck!

I chose the PZCT-02 as it was the cheapest thing I could find that would handle 200A.