Electrical engineering courses

Electrical drawings and schematics

Ref No: 2015032

It is often said that drawing is the engineers' language for communicating effectively. Drawings are used to communicate and share information between different teams of engineers; the design engineer who conceptualizes equipment or an entire system, the production engineer who plans the steps in manufacturing the required components and subsystems, the assembly engineer who puts the components together, the testing engineer who tests the complete system, the installation engineer who installs the system or equipment and the maintenance engineer who is responsible for its upkeep.
 A drawing should convey precise and identical information to all these engineers with diverse backgrounds and expertise. This calls for standardized methodologies, conventions and approach in preparing drawings. This course covers all these aspects with respect to engineering drawings in general and electrical drawings in particular. Various types of electrical drawings and their application, the steps in planning a drawing, selection of drawing size and scale, use of standardized symbols etc. are described in detail with commonly used examples from industry practice.
This course is designed to provide knowledge of the various types of electrical diagrams used in the industry, and to develop the skills necessary to read, draw and interpret these diagrams. The course will provide electrical personnel with the ability to read and understand the electrical diagrams, recognize equipment and verify the integrity of the existing schematics. Participants will be introduced to electrical symbols, one-line and three-line electrical schematics and their content, including basic layout and legends. Participants will participate in practical exercises in schematic reading, diagram verification and the steps required for creating and maintaining accurate one line diagrams. Participants are encouraged to bring examples of their own facility's prints to use during practical exercises. Low, medium and high-voltage installations can be reviewed as requested by participants

The objective of this workshop is to familiarise engineers and technicians with the various standards and practices used for reading and interpreting electrical drawings and schematics. It will help you understand the symbols and the language used in electrical drawings in line with the international standards and practices, giving you a detailed insight into the various types of electrical drawings used in the industry, their purpose and applications and also to differentiate  between the types of drawings.
The workshop observes the practices being followed by drawing offices for the development, management and control of drawings.
This workshop will be helpful for those from the electrical discipline - in the field of design, project or maintenance


CHAPTER 1: Engineering Drawings for Electrical Engineers – An Introduction
1.1 Drawings - their relevance to engineering 
1.2 Origin of worldwide standards in electro-technology 
1.3 Purposes served by different types of drawings 
1.4 Standards in a drawing office 
1.5 Organization of a typical drawing office 
1.6 Printing, distribution and control of copies 
1.7 Summary 

CHAPTER 2: Components of a Drawing, Drawing Sizes and Scales
2.1 Typical engineering drawings 
2.2 Various categories of electrical drawings 
2.3 Planning your drawing 
2.4 Title block in a drawing and what it should contain 
2.5 Legend block 
2.6 Bill of materials block 
2.7 Drawing notes block 
2.8 Revision history, revision numbering and use of revision marks
2.9 Summary 

CHAPTER 3: Symbols Used in Electro-technology and Governing Standards
3.1 Types of drawings that need symbols 
3.2 Symbols as per electro-technology standards 
3.3 Use of non standard symbols 
3.4 Use of color and line types in representing various services 
3.5 Company standards for drawings 
3.6 Summary 

CHAPTER 4: Single Line and Three Line Diagrams
4.1 Purpose 
4.2 Typical examples
4.3 The differences between single line and the 3-line diagram
4.4 Applications 
4.5 Conventions 
4.6 Summary 

CHAPTER 5: Electricity supply diagrams
5.1 Introduction
5.2 Standard voltages
5.3 Variation of voltage and frequency
5.4 Systems of supply
5.5 Industrial distribution systems
5.6  Low voltage distribution circuits

CHAPTER 6: Motors and schematic Diagrams 
5.1 Introduction
5.2 Electrical symbols
5.3 Line diagrams
5.4 Overload protection
5.5 Overload relays 
5.6 Manual control
5.7 Magnetic contactors and starters
5.8 Starter ratings
5.9 Case studies
5.10 Multi-speed and reversing starters
5.11 Reduced-voltage starting
5.12 Solid-state reduced-voltage controllers
5.13 Pilot devices
5.14 Control transformers
5.15 Control relays
5.16 Timing relays
5.17 Pressure switches
5.18 Logo! Logic module

CHAPTER 7: Logic Diagrams
7.1 Purpose 
7.2 Logic gates 
7.3 Typical examples 
7.4 Symbols 
7.5 Applications 
7.6 Summary 

CHAPTER 8: Cabling and Wiring Drawings 
8.1 Purpose 
8.2 Sub types of cabling and wiring drawings 
8.3 Conventions used
8.4 Summary 

CHAPTER 9: Lighting circuits diagrams
  9.1 Simple lighting & switch circuits
  9.2 Lighting circuits using looping-in  
  9.3  Lighting circuits using junction boxes
  9.4 Comparison between lopping-in and junction box lighting systems  
  9.5 Switching
  9.6 Series-parallel circuits
  9.7 Technical lighting drawings 
  9.8 Emergency power systems 
CHAPTER 10: Layout drawings 
10.1 Purpose
10.2 Conventions used for layout drawings 
10.3 Sub types of layout drawings 
10.4 Applications of layout drawings 
10.5 Summary 


Electrical technicians, field engineers, consulting engineers, maintenance engineers project managers, inspectors, and contractors

Trainees shall receive a portfolio containing a comprehensive course manual.

Attendees shall receive a certificate of attendance from AMAD Tech.