There are a number of different options for showing how circuits, networks or electrical distribution work. In all cases, this will involve an electrical diagram (or plan) using (standardised!) symbols to represent all or part of the electric installation in question. This electric installation already exists, or is to be created, so what must it have? A diagram is needed in order to build, understand, modify and troubleshoot this same installation. But what type of diagram is required? We will look at the main types used below DIFFERENT TYPES OF ELECTRIC DIAGRAMS:
Wiring and connection diagram :-
This shows all the connections existing between the various elements in an electric installation. Schematic diagram To enable the reader to separate and keep track of each step, each level of successive (sequential) operations from the first action (initiation) to the “final act”
. One-line diagram( Single line ) :-
Simplification of low and/or high voltage distribution, to provide an “overview” of the installation. Also call it SLD .
Block diagram :- This is a “simplified” diagram showing the steps or description of an operation if there is no need to go into detail
Logic diagram:- This is a bit like a block diagram. Often used as a troubleshooting tool showing the various possible dysfunctions and the “initiatives” to take and the “directives” to follow according to the different possibilities, occurrences and events in the course of a sequence.
Earthing diagram :-
This is a diagram which is very often forgotten after site construction; it shows all the earth/ground distribution systems with the cabling (buried or not), earthing pits, earthing connection points on equipment (by number and connection method). On site it will have an accompanying connection details book.
Other plans/diagrams:-
Electricians use industrial programmable logic controllers (PLC). In the “Automatic controllers” course, we will look at the diagrams for automatic controllers themselves (ladder diagrams), but before drawing up this (final) diagram, here we will look at the systems/methods laying the groundwork for making this automatic controller diagram, i.e.: Logic diagram: with binary logic, Boolean algebra, Boolean diagrams, Karnaugh maps, … GRAFCET (Sequential function chart): with the GRAFCET representation standards to enable you to follow and interpret a “GRAFCET” diagram. Drawing up a GRAFCET (in its own right) will be covered in the ‘Automatic controllers’ course in preparation for drawing up a ‘ladder’ diagram
