Les deux conditions essentielles pour la sélectivité différentielle

In this video, I explain the two essential conditions to respect to guarantee effective differential selectivity in electrical systems: Differential current: The upstream differential tripping current must be greater than or equal to that downstream, i.e., IΔn_amont ≥ 3xIΔn_aval Delay time: The delay time of the upstream device must be greater than or equal to 40 ms compared to that of the downstream device, i.e., t_amont - t_aval ≥ 40 ms These two simple rules allow you to coordinate protection devices to avoid unnecessary power outages in your installations. Electrical Power Balance Calculation Additional Resources: 📚 Complete Training: Dive into our training on low-voltage electrical design -https://www.lokelect-engineering.com/... Introduction to Caneco BT to master all aspects of the software Electrical Power Balance Calculation https://www.lokelect-engineering.com/... Minimum Protected Cross Section Calculation https://www.lokelect-engineering.com/... Voltage Drop Calculation https://www.lokelect-engineering.com/... https://www.lokelect-engineering.com/... 💡 My training schedule: Join our live sessions to deepen your knowledge https://www.lokelect-engineering.com/... 👥 Join our Community: Facebook: https://www.facebook.com/profile.php?... LinkedIn:   / lokmane-boussaa-a3385339   🔔 Subscribe to our channel to stay up-to-date with our latest videos on advanced electrical engineering solutions ! About Lokelect Engineering: We specialize in training and consulting in low-voltage electrical engineering, with a particular focus on the use of Caneco BT software. Our goal is to provide tools and resources to help professionals optimize the safety and efficiency of their electrical installations. Also, check out my CALCELECT electrical power balance calculation software: https://www.lokelect-engineering.com/...