Objectives
• To understand basic electrical symbols
• To understand power and control circuits
• To read electrical drawings.
Devices and symbols
Any electrical drawing representing an electrical installation or a circuit takes the help of specific symbols to represent various electrical devices in shorthand. This provides a quick idea to the reader about a circuit or installation, and is particularly useful while troubleshooting.
Therefore, it is important to familiarize oneself with various symbols. Some of the commonly used device symbols are detailed in the following section and in Figure 2.1.
Related posts:
Speed control of d.c. Motors:Electronic Speed Control Method for DC Motors
Direct-Current Motor Control
CONTROL FUNDAMENTALS
INTRODUCTION TO POWER ELECTRONIC CONVERTERS FOR MOTOR DRIVES
Audio Amplifiers:Useful Circuit Components
Variable Voltage And Magnetic Clutches:Voltage Control Methods
OPERATING CHARACTERISTICS OF INDUCTION MOTORS:SINGLE-PHASE INDUCTION MOTORS
Constant-Horsepower Connection
INDUCTION MOTORS – ROTATING FIELD, SLIP AND TORQUE:INFLUENCE OF ROTOR CURRENT ON FLUX
The Triac:Testing the Triac
Insulating And Reinsulating
Objective tests on computations and circle diagrams.
Solids, liquids and gases:Gases
Rewinding and Reconnecting