![]() Printing the single-line diagram and project documentation.It can then be copied and modified to create a number of alternate drawings showing different system approaches. Other information can be added throughout the design cycle. The Life Of a Single Line Diagram A Single Line Diagram may start out in the Design Development Phase of a project as a basic concept. Setting and coordination of protection devices Voltage Transformers Protection Relays 1.Identify voltage conventions in a single-line diagram. It also includes the system protection schemes. Module Objectives Explain the purpose of single-line diagrams. The required information is added to give the engineer or a system operator the full picture of the electrical system. ![]() Dimensioning switching- and protection devices A single line diagram is a simplified explanation for representing a three-phase power system.Dimensioning low- and medium-voltage cables The single-line diagram is the blueprint for electrical system analysis.Calculation of line current and voltage drops.Drawing the key diagram of the auxiliary circuits.Drawing the single-line electric diagram.The main functionalities of the program are: In a single-line electrical diagram, each transmission or distribution power line appears as a single line on the page, rather than as three (or four) lines. It is possible to draw the single-line diagram of a complete installation in order to dimension transformers and cables, select and coordinate switching and protection devices and configure the switchboards obtaining the complete bill of material.īut it is also possible to use DOC as an electrical calculator for support in cable sizing, voltage drop calculation, short-circuit calculations, device selection, circuit-breakers trip unit setting, cable protection verification, motor coordination selection and all the daily needs of a professional of the electrical sector.
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