Learn how to assess current-limiting LV breakers in protection and cable sizing using ETAP

Learn about the innovative new features and capabilities of ETAP specific to cable sizing and protection for low voltage networks. This presentation briefly covers the principles of current-limiting low voltage (LV) breakers and then demonstrates how ETAP can be used to assess the protection of cables and energy in LV networks. The new ETAP Energy and Current Characteristic View is presented, which is used for simplified analysis of cable protection against overcurrent conditions. Also, ETAP’s Star Auto-Evaluation power system monitoring is demonstrated. This module is used for assessing cable energy withstand capabilities to ensure that a breaker’s let-through energy is within safe limits. The presentation also demonstrates ETAP’s enhancements to cable sizing analysis that applies let-through energy as an additional constraint. By considering current-limiting breakers in the evaluation of an LV network model, engineers can make better informed decisions that ensure safety and improve reliability.