MSP430FR5728: Fault Monitoring for Overhead Fault Indicators

You can refer to this document https://www.ti.com/lit/wp/slay050/slay050.pdf 

and this page https://www.ti.com/solution/fault-indicator-fi?keyMatch=Fault%20Indicators&tisearch=universal_search 

Hi Gary:

Thanks for your assistance but the documentes doesn't sugest how to detect 10000V voltage at Fault Current Indicator device..

Yes, we just have such reference design of https://www.ti.com/tool/TIDA-00807 that Current voltage measurement range: 0.5-100A, 50-300V. But based on my opinion you can just modify the analog front end to fit with 10000v that will be work.

Hi Gray:
Thanks for your assistance.

Yes, Base on your design has a voltage detection from 50 to 300V, but it is not mension how to detect just a Vlotage I/P block on it. Could you please provide more information for us?

BR

SH

It has provide the schematic on the web 

https://www.ti.com/lit/df/tidrmj9/tidrmj9.pdf?ts=1729078047858 

Hi Gary:

Thanks for your assistance..

Can you explain what is the "PD" at schematic?

BR

SH

It is potential divider circuit divides AC input voltage to a Level that can be measured by ADC. 

But I am not sure if that can meet with 10000v voltage sample maybe add a voltage isolator will be more safe.

Hi Gary:

Thanks for your updated!
Yes, we can not direct conect to 1000VAC! It is too dange and power utility company don't allow us to do this. We need some coupling solution to catch AC voltage.

BR

SH

That all we have so far, if you have any other questions about MSP430 you can ask me here

Hi Gary:

Thanks for your assistance..

So, Could you ask some help from your team?

BR

SH