Industrial Electrical Maintenance Part 1 – Module 4

Day 1 of the Industrial Electrical Maintenance Part 1 consists of:

Electricity at Work Regulations 1989, requirements and implementation
Working safely, including the importance of isolation procedures and lock out systems
Switches and Push Buttons, an explanation of the various types of switches and push buttons, the terminology and electrical symbols which are used in industry today, along with practical testing of functionality
Relays and Contactors, principles of operation, purpose and uses
Circuit design using BS electrical symbols and ladder diagrams, simple retaining circuits
Construction of the above circuit, demonstrating the techniques of cable termination.
Day 2 of the Industrial Electrical Maintenance Part 1 consists of:

3 phase induction motors, synchronous and asynchronous
Description of the component parts of a 3 phase induction motor
Demonstration of how a 3 phase rotating magnetic field is produced and how to reverse it
Explanation of synchronous and asynchronous speed and slip
Effect of the number of poles on motor speed
Frame sizes
Practical identification of various motors.
Day 3 of the Industrial Electrical Maintenance Part 1 consists of:

Principles of 3 phase induction motor control systems
Overload protection principles of operation and use
Design and operation of a DOL (direct on line) starter
Construction of a DOL starter
Inspection and testing procedure for the above starter
Motor testing procedures.
Day 4 of the Industrial Electrical Maintenance Part 1 consists of:

DOL starter modifications
Importance of updating documentation
Design, construction and verification of reversing starter control and power circuits.
Day 5 of the Industrial Electrical Maintenance Part 1 consists of:

Star delta starters, principles of operation and uses
Design, construction and verification of star delta starter control and power circuits.