In this work the SmartElectricDrives (SED) library Release 1.0.1 is presented. The SED library is a tool for simulating and tuning of electric drives in complex electromechanical systems. This library is specifically designed for simulations of electric drive systems with a Modelica development platform. Besides a variety of elementary components for simulating modern electric drives the SED library also contains powerful ’ready-to-use’ drive models. These ’ready-to-use’ drive models include all features and characteristics of full modern electric drives in only one single component. Furthermore, the SED library facilitates simulations on different levels of abstraction. By choosing the right level of abstraction the user can save processing power and therefore computing time. This work outlines all the specific features and design considerations of the SED library. Three simulation examples are presented. Based on the results of these examples the performance of the applied SED models is assessed and analysed.