Etap Tutorial

Go to File > New Project . Name your file and choose its directory.

| Component | Key Data to Input | | :--- | :--- | | Bus | Rated voltage (kV), short circuit MVA, X/R ratio. | | Utility / Power Grid | Short circuit MVA, X/R ratio, nominal voltage. | | Generator | Rated MVA, rated kV, power factor, reactances (Xd, X'd, X''d). | | Transformer | Rated MVA, primary/secondary voltage (kV), %Z, X/R ratio, winding connection. | | Transmission Line / Cable | Length, positive/zero sequence resistance (R) and reactance (X), ampacity. | | Load (Static) | Rated kW, power factor (or kVAr), load classification (e.g., Industrial). | | Motor (Induction) | Rated HP/kW, rated kV, efficiency, power factor, locked rotor code. | | Protective Device (e.g., Circuit Breaker) | Manufacturer, type, sensor rating, long-time pickup (LTPU), short-time pickup (STPU). |

Run the Max Short Circuit Current calculation according to IEC 60909 rules. Step 5.4: Interrogating Short Circuit Data etap tutorial

Click the Run Load Flow button (often a play-like icon). Analyze Results:

Controls the operational mode of the software. You can switch between Edit Mode (to build the system) and various Analysis Modes (Load Flow, Short Circuit, Motor Acceleration, etc.). Go to File > New Project

This is the most visually satisfying module. You can plot Time-Current Curves (TCC). You drag relay curves (Inverse, Very Inverse, Extremely Inverse) to "see" selectivity.

This comprehensive tutorial provides a structured, step-by-step approach to navigating the ETAP environment, building a single-line diagram, running core analyses, and interpreting the results. 1. Introduction to the ETAP Interface | | Utility / Power Grid | Short

Select IEEE or IEC for equipment ratings and calculation methods. 3. Creating a One-Line Diagram (OLD) The One-Line Diagram is the heart of your project.

Click the button (briefcase icon on the new active toolbar).

To run the simulation, click the button in the toolbar. The results will be displayed directly on the one-line diagram. Buses will show their calculated voltage magnitude and angle; cables, transformers, and other branches will show the power flow (in MW and MVar). You can use the Report Manager to generate a comprehensive report for documentation and further analysis. The Load Flow study is key to identifying overloaded equipment, verifying voltage profiles, and checking transformer tap settings.