The Diseases Of Electrical Machinery

xii INTR OD UCTION. ready rules as compendiously as possible, so that the advice of the little book shall seldom or never leave him in the lurch. My practice for twelve years as a constructor, and my present position as civil engineer, have caused thousands of machines to pass through my hands, so that I am well able to pass judgment upon the points which are to be treated within the compass of this theme. In the following pages I have generally given explanations of those faults and troubles only which occur in the operation of machines, yet without rigidly adhering to this rule; so that occasionally also faults of manufacture and defects that have their origin in calculation and design are described. Further, the expositions are not confined merely to the machines themselves, but include also those pieces of auxiliary apparatus, such as regulating rheostats and starters, which are inseparable from all operating plant. The subject divides itself naturally into four principal sections, namely :— I. Continuous-current Machines. II. Single-phase and Polyphase Alternators. III. Single-phase and Polyphase Motors. IV. Transformers. So, then, may the little work serve the desired use for those for whom it is written, and be to them a trusty adviser. Munchen, 1903.