Hi everyone, I’m reaching out to seek some clarification on voltage drop calculations, as I’ve encountered some puzzling results while working on a project. I’m currently designing an electrical system for a hospital, and ensuring accurate voltage drop calculations is critical for the safety and reliability of the installation.
I’ve been working with both simple and complex Single Line Diagrams (SLDs) and noticed a significant discrepancy in the voltage drop results when moving from a straightforward setup to a more intricate one. For instance, when calculating for a 180A load over 165 meters using a 1 x 240sqmm cable, the results seem reasonable in a simplified scenario. However, when incorporating the same parameters into a more detailed SLD with additional components like circuit breakers and disconnectors, the voltage drop results become unexpectedly high and, frankly, concerning.
I’ve attached examples of both scenarios for reference: a simplified SLD on one side and the more complex one on the other. I’m wondering if there’s something I’m overlooking in the setup or if there’s a specific method to handle such complexities accurately. Any insights or suggestions would be greatly appreciated, as this directly impacts the project’s compliance and performance.
Thank you in advance for your help!
Best regards,
Mihaela Gusa