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EVM430-F6779: Modify EVM430-F6779 to support 400 V

Mario_7
Intellectual 290 points
Part Number: EVM430-F6779

Hi,

This is Mario. We purchased the product EVM430-F6779 and we would like to modify it so that it can support 400 V (three-phase). Could you give us some advice about how this can be done?

Thank you in advance and best regards,

Mario

  • +1
    TI__Mastermind 32920 points

    I think what you need to do is to set the right shunter resistor in the GUI. Nothing special.

  • 0 in reply to Eason Zhou
    Intellectual 290 points

    Thank you for your response.Do you refer to R92, R93 and R94 from Figure 3 of datasheet?

    We checked the datasheet and our guess is that other components need also to be replaced. 

    -C39, C46, C50: they are rated for only 305 VAC

    -R19, R11, R12 and R13: their values need to be changed so that Vmax = 930 mV is not reached; if our calculations our correct, if the same values are kept for the resistors, a voltage of 958 mV could be reached at V3+. This value is larger than Vmax

    We checked the document SLVA491 that refers to a tool that is able to calculate the values of several components when VRMS is changed, but we cannot find this tool. Do you know where to find it?

    Please, let us know if there is some component (apart from the ones mentioned before) that needs to be modified too.

    Regards,

    Mario

  • 0 in reply to Mario_7
    TI__Mastermind 32920 points

    For e-meter, we have two GUI.

    Legacy version: as you see in the document

    Latest version: https://www.ti.com/tool/MSP-EM-DESIGN-CENTER

    Here is the difference :

    Legacy version:

    Open source

    We don’t maintain and support

    Have some known issue which you can find it in the related app note, like SLAA638

    The GUI only can run on Windows® XP SP3 or Windows 7

    Latest version:

    Not open source

    We keep maintain and support

    The GUI can run on Windows 7, 10

  • 0 in reply to Eason Zhou
    Intellectual 290 points

    Okay, thank you for the information about the GUI. However, we are now focused on hardware and how to adapt to 400 V, could you confirm the modifications stated above?

    Moreover, we were looking for the design files of the kit, found them here(link) but, when trying to open them with OrCAD, the message "the design is corrupted appears". Is this a reported issue?

    Thank you again,

    Mario

  • +1 in reply to Mario_7
    TI__Mastermind 32920 points

    I think you need to double check of C102 and C48.

    I think these design files can open with early version of eagle.

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