How can electricians beginners understand circuit diagrams?

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How can electricians understand circuit diagrams? This problem presents certain difficulties for both experienced engineering and technical personnel as well as newcomers to the field of electricity. When I first started working, I worked as a practical electrician for half a year. I remember it taking me a long time to read the drawings for an industrial elevator with seven floors. At that time, the elevator control system was entirely built using relays, along with components from the former Soviet Union. There are dozens of drawings, and each one is interconnected, making it very difficult to read. The author’s study notebook was filled to nearly half before it was lost, which is a pity. At ABB, whenever a project is completed, I am responsible for handing over all the drawings and technical documents to the client, as well as providing technical training to the client’s staff. Technicians get headaches just by looking at these drawings, especially when it comes to explaining PLC programs and power monitoring systems – topics that involve database programs and interface programs; the presenter struggles, while the listeners sigh. Some experiences in user technical training: 1. Help the listeners understand the basic working principles of the equipment and its control purposes ； For example, the basic control methods for motors, process requirements, and basic control measures, etc. 2. Help listeners understand the characteristics, parameters, and working principles of components ； For example, various automated instruments such as circuit breakers, contactors, relays, PLCs, and digital display instruments, including their working principles, wiring methods, parameters, and connection techniques. 3. Explain and analyze the control schematic diagram in detail to the listeners ； This is the topic of today. 4. Explain the operating characteristics and maintenance methods of the system. This part is the key point; it summarizes the measures for users’ future operation and maintenance. How electricians beginners can understand circuit diagrams: yunrun.com.cn/tech/2178.html. Find a book – here we recommend \"Super Practical Collection of Electrical Circuit Diagrams.\" With this book, one can understand most basic control unit circuits. But here’s the problem again: if you combine the individual circuits, it becomes difficult for beginners. There are two key points: first, some electricians have not received systematic training* ； Second, when reading, people often have a utilitarian mindset, hoping to find useful information as quickly as possible, and tend to neglect the theoretical aspects. Therefore, everyone should read some systematic materials appropriately. Most electricians have left campus; they are busy with work and household chores, making it difficult for them to find time to read. However, as we know from the previous description, it is necessary to read some basic reading materials. The author offers some suggestions: First, one should develop the habit of taking reading notes. When reading a book, there are certainly certain key points and difficult aspects within its content; taking notes involves compiling these key points and difficulties, as well as the methods to address them. Therefore, for us, the value of reading notes is greater than that of the original book. Second: When reading, one must not stop when encountering difficult points; instead, one should continue. In fact, by reading on, the difficulties from earlier often get clarified. Third: Of course, reference materials are needed when reading. It should be noted that middle school physics textbooks must not be used as supplementary reading! Why? Middle school physics textbooks are of a popular science nature and not professional books. What we need are professional reading materials. Fourth: Reading is a challenging task that requires us to invest time and effort. Driven by interest, many people buy numerous books. After buying it, I flipped through a few pages; from then on it was left on the shelf to gather dust, becoming just a decoration. This is the most deadly way of studying*. Therefore, one should create a practical study plan for themselves and stick to it strictly. Fifth is applying what we have learned; this is very important as it promotes our learning and enhances our ability to solve problems. Finally, the author offers a suggestion for beginners in electrical work: after understanding a drawing, set it aside and create another drawing based on the design principles outlined in it. By then comparing your own design with the original one, you can identify your own shortcomings as well as any design flaws in the original drawing – killing several birds with one stone! If an electrician can draw circuit diagrams on their own, understanding them will be a piece of cake. Author: Wang Lanjun