The book "Electrical Machines" by Peter Behrends offers a comprehensive introduction to the various types of electrical machines, including direct current machines, generators, motors, and transformers. It covers both the theoretical foundations and practical applications that are important for the training of electrical installers, electromechanics, and electrical engineers. The 15th edition of the work is particularly valuable for master training and provides detailed information on faults in electrical machines as well as their classification. The clear structure and well-founded presentation of the content make it an indispensable reference work for students and professionals in electrical engineering.