Single line drawing electrical symbols. In addition to showing the ratings and size of electrical equipment and circuit conductors a properly drawn one line diagram will also show an electrically correct distribution of power with respect to current flow from the power source to the downstream loads or. The single line diagram is circuit diagram where one line is shown to represent three phases of a three phase power system. There are some standard symbols to represent the components in a circuits. This does not mean that all electromechanical devices will be replaced but they will share a smaller part of the industrial control spectrum in the future.
The project on these units will include drawing an electrical diagram creating multiple purchase part. This article gives some of the frequently used symbols for drawing the circuits. The one line diagram has its largest application in power flow studieselectrical elements such as circuit breakers transformers capacitors bus bars and conductors are shown by standardized schematic symbols. You can download a pdf copy of.
One of the simplest electrical products to construct is designing an on off switch assembly. Line conventions are different types and weights of lines used to represent the features of an object. Single line diagram sld we usually depict the electrical distribution system by a graphic representation called a single line diagram slda single line can show all or part of a system. The meaning of a line with certain characteristics has been standardized and will.
In recent years there has been a steady evolution toward the use of solid state components in industrial control. In power engineering a one line diagram or single line diagram sld is a simplified notation for representing a three phase power system. Extremely easy to use electrical pneumatic and hydraulic schematic design software based on microsoft visio used by thousands of engineers in over 48 countries. As an illustration of the use of electrical symbols in schematic diagrams consider the following two examples.