MODULE DETAILS

Module 6:     Transformers, Circuit Breakers and Switchgear

Nominal duration: 5  weeks (60 hours total time commitment)

This time commitment includes the preparation reading, attendance at each webinar (1 hour plus 15-30 minutes for discussion), and the time necessary to complete the assignments and further study.

MODULE PURPOSE

This module covers some of the power distribution components. It covers a detailed study of transformer principles and their applications. Topics cover transformer configurations and vector group, off circuit and on load tap changers, transformer cooling, dry type and VPI type construction, specifying a transformer, testing and maintaining a transformer, failure prevention, residual life estimation. Further it covers the topics in circuit breaker and their operating principles, specification of MV, LV circuit breakers, switchboard configurations, interlocking within switchgear for safe operation and testing and maintenance of circuit breakers and switchgear.

PRE-REQUISITE MODULE(S)

Module 5: Electrical Power Distribution

 

ASSESSMENT STRATEGY

To evaluate the achievement of the learning outcomes; written assignments, group projects and practical exercises are set.

SUMMARY OF LEARNING OUTCOMES 

 

1.   Examine the theory, types, construction and characteristics of power transformers

2.   Outline the procedures for the installation, maintenance and testing of power transformers

3.   Examine and discuss the basics of medium voltage and low voltage switchgear

4.   Examine and discuss medium and low voltage circuit breakers

 

 



Learning Outcome 1

Examine the theory, types, construction and characteristics of power transformers

Assessment Criteria

1.1

Discuss the fundamentals of power transformers

1.2

Explain the construction of power transformers

1.3

Distinguish between various power transformer types

1.4

Explain the methods of transformer protection


Learning Outcome 2

Outline the procedures for the installation, maintenance and testing of power transformers

Assessment Criteria

2.1

Explain the steps involved in power transformer installation

2.2

Outline the procedures involved in ensuring power transformer oil quality

2.3

Examine and discuss the performance of electrical tests and preventive measures


Learning Outcome 3

Examine and discuss the basics of medium voltage and low voltage switchgear

Assessment Criteria

3.1

Describe MV and LV switchgear applications

3.2

Describe MV and LV switchgear construction

3.3

Examine and discuss metering, protection, and control for MV and LV switchgear

3.4

Examine and discuss metering, protection and control for MV and LV switchgear

 

 

Learning Outcome 4

Examine and discuss medium and low voltage circuit breakers

Assessment Criteria

4.1

Explain the basics of circuit breakers

4.2

Discuss the specification and ratings of circuit breakers

4.3

Describe the construction of MV and LV circuit breakers

Delivery mode

A combination of asynchronous and synchronous e-learning delivery comprising a judicious mix of interactive online web conferencing, simulation (virtual labs) software, remote online labs, online videos, PowerPoint slides, notes, reading and study materials (in PDF, HTML and Word format) accessed through the Moodle Learning Management System (LMS).

Software/Hardware Used

Software

  • VPLabs

  • Instruction update 11/09/2019 - v6.2 

Hardware

  • Remote Lab