The Chains of Sinusoidal Current . Part 2 . Three-phase circuits: methodological guidelines for laboratory work for students of non-electrotech” is an indispensable educational resource for students studying the basics of electrical engineering and electronics. Created by a team of authors, this work is the second part of a series devoted to sinusoidal currents, and focuses on three-phase circuits, which is a key aspect in understanding modern electrical systems. In this book you will find detailed guidelines that will help you not only to master the theoretical foundations, but also to put them into practice in the laboratory. Each chapter contains clear instructions, illustrations, and examples, making the learning process more accessible and engaging. The book covers such important topics as the analysis of three-phase chains, their application in various fields, as well as methods for measuring and calculating parameters. For whom is this book intended? First of all, it will be useful for students of technical specialties, especially for those who study electrical engineering, electronics and related disciplines . If you are in the first or second year of university and want to deepen your knowledge of three-phase systems, then this book will be a reliable assistant for you. It can also be of interest to teachers and specialists working in the field of electrical engineering, as it contains relevant techniques and practical tasks that can be used in the educational process. The book raises important topics such as the efficiency and reliability of three-phase circuits, their advantages over single-phase systems, and the impact of various factors on their operation. These aspects are not only relevant for students, but also for practicing engineers who seek to optimize their projects and improve their efficiency. In today's world, where electrical systems are becoming increasingly complex and multifunctional, understanding three-phase circuits is becoming essential for a successful career in electrical engineering. The style of the authors is clear and accessible, which allows even complex technical concepts to be explained in simple language. They use a variety of illustrations and diagrams, which helps to visualize the material and better absorb the information. The team of authors is also known for their other work in the field of electrical engineering, which adds additional value to this book. Their experience and knowledge make this book a reliable source of information for anyone who wants to understand the intricacies of three-phase systems. If you are looking for a tutorial that will help you not only understand the theory, but also put it into practice, then “Sinusoidal current chains . Part 2 . Three-phase circuits" is exactly what you need. This book will be your faithful companion in the world of electrical engineering, providing you with the necessary knowledge and skills for successful study and further professional activity. Do not miss the opportunity to deepen your knowledge and become an expert in the field of three-phase chains!