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Loading Inverter Page resets custom inverter voltage ratings on System Design page #2082

@mjprilliman

Description

@mjprilliman

Describe the bug

-When setting a different Vmppt_low, Vmppt_high, or Vdc_max on the System Design page for string sizing that is different from the voltages listed on the inverter page, These values reset to the inverter specs on the Inverter page load. The user should be notified of this, or this re-writing should not happen on page load

To Reproduce

Steps to reproduce the behavior:

  1. Go to Detailed PV - Residential
  2. Click on System Design
  3. Change Vmppt_low input value
  4. Click on Inverter
  5. Click on System Design, see changed value for Vmppt_low

Expected behavior

The user should be notified if this is going to change automatically. I think once the value is changed on System Design, it should be up to the user to click the 'Copy ratings from Inverter page' button if they go back and modify inverter specs.

Operating System and Version

  • OS: Windows
  • Version: 2025.4.16

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bugpvpvsam1, pvwatts, hcpv

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