Learning Outcomes

Introduction to Protective Relaying

Requirements of a Protective System

Mechanism and History of Relays

Types of Protective Relays

Relays and their Construction

Lesson Summary

In this module, you will be introduced to the Fundamentals of Protective Relaying. You will also be introduced to the different types of faults in power system networks, the consequences of these faults, and the various types of protective relays based on their construction and functioning.

Overcurrent Protection of Transmission Lines

Numerical Examples of Overcurrent Relay

Application of Overcurrent Relay

Inverse Time Overcurrent Relay

Setting for Phase and Ground Relays

Plug Setting and Time Dial Setting of Relays

Directional Relays

Phase and Time Dial Setting of Directional Relays

You will be introduced to the current-based relaying scheme in this module. You will learn about overcurrent protection of transmission lines, directional relays as well as plug setting and time dial setting of relays. The directional relay torque equation will also be discussed in this module.

How the Distance Relay Works

The Reach and Types of Distance Relays

Voltage and Current for Distance Relays

Distance Relay Examples

Fault Resistance and Power Swing

You will study the protection of transmission lines using distance relays in this module. The overcurrent relay, distance relay, and pilot relay will be discussed. You will also learn the advantages and disadvantages of these relays and the effects of fault resistance and power swing on distance relays.

Introduction to Power System Protection - Course Assessment

Master the fundamentals of power systems and the mechanisms that protect them with this free online engineering course.

Diploma in Power System Protection - An Introduction

This free online diploma course lays out the fundamentals of power protection, the features of current-based relaying schemes and the processes that protect transmission lines. A power system network requires protection to operate efficiently and we explain the practices and technologies that produce electricity safely. This course can hone your engineering skills and makes an invaluable addition to your résumé.

We offer essential skills and insight into the protection of power system networks in this free online electrical engineering course. Power system protection addresses the safeguarding of an electrical power system from faults. Faults can cause extensive damage to equipment and result in interruption of power supply, hazards to personnel and loss of revenue to power supply companies. Power protection systems work by isolating the components that are faulty and leaving the rest of the system operable. We discuss the distinction between power protection devices and ‘switchgear’ and explain how each plays a role in protecting power systems. We then examine different faults and establish their effect on electrical components. The course then covers various types of protective relays, including the thermal, attracted armature, induction and balanced beam relays. We then delve into the materials used to make these relays, their application, advantages and disadvantages. We also demonstrate how to calculate their behaviour with the universal torque equation.
The course then covers current-based relaying schemes and the overcurrent protection of transmission lines in detail. We study the various types of overcurrent protection relays, including the instantaneous overcurrent relay, definite minimum time overcurrent relay, inverse time overcurrent relay and the inverse definite minimum time overcurrent relay. We break down the plug setting (PS) and time dial settings (TDS) of overcurrent relays and show you how to calculate PS and TDS through examples of each type of overcurrent relay. We also discuss the application of overcurrent relay and establish its advantages and disadvantages. The course then moves on to the discrimination philosophy of relays as we study current discrimination, time discrimination and current-time discrimination. We examine directional and non-directional relays before introducing you to the distance relay and breaking down the classification of relays into phase and ground variants. The course investigates the effect of fault resistance and power swings on the performance of distance relays and analyzes fault distance measurement and stepped distance. 
We conclude with the reach of distance relays and the various types of distance relay, including the impedance, reactance, mho or admittance relay, ohm or angle impedance relay, offset mho relay and more. Power system protection is an essential aspect of the power system networks that keep our world running. If you are considering a career path in power system networks or are a professional looking to refresh or enhance your skills, then this electrical engineering course is for you.

Udemy Earns More, Pays Instructors Less: Class Central Exclusive

40+ Free Certificates from Wolfram U: Expand Your Computational Universe

The Business of Online Education: A Deep Dive Into Thinkific’s Financials

5 Best Free Raspberry Pi Courses for Beginners in 2025

A Decade of MOOCs: A Review of MOOC Stats and Trends in 2021

Coursera Bets $100 Million That Andrew Ng Can Do What Coursera Can’t

Coursera and Udemy Shareholders Approve Merger With 99% of Votes

12 Best Data Science Courses for 2025

200K Layoffs, $100B Lost: The Tsunami of China’s Regulation on Education

How Online Course Platforms Track Learners in 2022

freeCodeCamp’s Responsive Web Design (Free) Certification Is Out of Beta

Beginning to Program: Review of CS50 Scratch Course

Best CSS Layout Courses for 2025

12 Best Data Structures & Algorithms Courses for 2025

Coursera’s $100 Million Thesis: Andrew Ng Will Think of Something

Chasing 100M Daily Users, Duolingo Reconsiders Ads, Paying Influencers, and Its Most Expensive Plan

Aims & Objectives of ISO/IEC 17025:2017

Accrediting to ISO/IEC 17025:2017

Main Sections of ISO/IEC 17025:2017

This module presents the fundamental aspects of ISO/IEC 17025:2017 along with its aims and objectives. The module also explains different forms of standardized verbs used throughout the standard. Moreover, you will also learn the benefits of accrediting to ISO/IEC 17025. Lastly, an overview of the section's standard is also given.

General and Structural Guidelines for Laboratories

Resource Requirements for Testing Laboratories

Contracts, Validation, Sampling & Handling

Technical Records, Uncertainty, Results Validity, & Reports

In this module, you will encounter the essential requirements given in clauses 4, 5, 6, and 7 of ISO/IEC 17025;2017. However, the explanation of Clause 7 is provided till sub-clause - 7.8. Through this module, you will learn about the general, structural, resource, and process requirements of ISO/IEC 17025:2017.

Information Management, Complaints & Nonconformities (NCs)

Management System Requirements

Taking Corrective Actions

In this module, you will see discussions on ISO/IEC 17025:2017 beginning from sub clause 7.9 that puts forward the complaint requirements put forth by the standard. Furthermore, it presents the standard's requirements regarding management systems. Moreover, it also contains necessary measures to be taken for corrective actions.

ISO/IEC 17025:2017 - Laboratory Management System- Course Assessment

Learn about laboratory management systems laid out by the ISO 17025 international standard in this free online course.

ISO/IEC 17025:2017 - Laboratory Management Systems

This short course is designed for individuals and laboratories looking forward to their standardisation. We explain management standards defined by the ‘ISO/IEC 17025 general requirements for testing and calibration laboratories competence’ devised by ISO. This comprehensive course explains all the basic and essential requirements of the standard. It also provides a simplified clause-by-clause explanation of its four main sections.

Fundamentals of Pest Control

Pest Identification and Assessment

Non-Chemical Pest Control Methods

Chemical Pest Control Methods

This module will teach you the fundamentals of pest control, types of pests and their impact, pest life cycles and behavior, factors influencing pest infestations, pest identification and assessment, non-chemical pest control methods, genetic control and sterile insect, chemical pest control methods, and integrated pest management (IPM) approach.

Monitoring and Prevention

Sustainable Pest Management

Urban and Structural Pest Control

Topics you will learn in this module include but are not limited to pest monitoring techniques, preventive measures and exclusion strategies, ecological impact of pesticides, selective pesticide use and resistance management, organic and biodynamic pest management, pest management in residential areas, and commercial and industrial pest control.

Pest Control and Management - Assessment

This free online course teaches you how to use chemical and non-chemical pest control techniques to manage infestations.

Pest Control and Management

Pests make environments unhygienic and are a major cause of diseases, some of which may be lethal and difficult or expensive to cure. Effective pest management and control are necessary to keep a living and working environment free from health hazards. This course provides the knowledge and skills required to establish and maintain a successful pest control management programme and describes various pests, their life cycles and their behaviour.

Foundations of Construction Safety Management

Safety Management for Hazardous Environments

High-risk Site Activities and Demolition Safety

This module covers risk identification and mitigation in construction work and how to evaluate and manage risk in compliance with CDM regulations. You'll also learn how behaviour affects safety on construction sites, including safety measures for scaffolding, excavation, demolition and more.

Course Assessment - Site Management Safety Training Scheme (SMSTS)

Learn how to manage safety on construction sites in accordance with UK legal provisions in this free online course.

Site Management Safety Training Scheme (SMSTS)

Construction workers are often vulnerable to injuries and hazards so ensuring safety is maintained consistently is crucial for both site managers and workers. This course covers the essential knowledge needed for maintaining safety on construction sites. You'll learn to identify and assess risks while adhering to UK industry regulations. In addition, we'll discuss safety measures to take during erecting scaffolding, excavations and demolitions.

Introduction to Hot Work

Classification of Hot Work Areas

Roles and Responsibilities

Hot Work Permit

Hot Work Risk Assessment

Essential Safety Precautions

This module will familiarize you with hot work processes, including their potential hazards and safety precautions. You'll learn how to assess the risks associated with hot work and determine appropriate control measures. You'll also understand the hot work permit system and the roles & responsibilities of those involved in the permitting process.

Hot Work Safety - Course Assessment

Learn how to manage the hazards associated with hot work processes in this free online health and safety course.

Hot Work Safety

This hot work safety training equips you with the essential knowledge to recognize and mitigate hot work hazards. You'll understand the hot work risk assessment process and hierarchy of controls for effectively reducing risks. The course explains the hot work permit system along with the roles and responsibilities of those involved in the permitting process. You'll also gain a clear understanding of hot work permitted and prohibited areas.

Introduction to Traffic Marshalling

Traffic Management

Temporary Traffic Control

Traffic Risk Assessment

Vehicle Signaling

Reversing Vehicles

Health and Safety

In this module, we will look at the fundamental objectives of traffic marshalling and the general duties of a traffic marshal. A traffic marshal's responsibilities when controlling traffic on a highway or construction areas shall be examined. Assessing risks along with health and safety concerns of traffic near construction areas will be assessed.

Construction Safety: Traffic Marshalling - Course assessment

Train as a traffic marshal or bankman who provides traffic management on construction sites in this free online course.

Construction Safety: Traffic Marshalling

This course takes an in-depth look at the role of traffic marshals on construction sites. Traffic management is important to maintaining health and safety as the presence of heavy machinery and large vehicles creates a need for the efficient direction of traffic. Traffic management in such a busy area faces hazards and safety risks, which we identify in this course. Sign up to train as a traffic marshal or bankman and add a skill to your CV.

Introduction to the AS Standards

Organization's Context and Leadership

QMS Planning and Support

This module introduces students to the AS standards for suppliers of the aviation industry. It explains the importance of regulations in the aerospace industry and navigates them through the journey of different AS standards. It also explains the requirements of Clauses 4, 5, 6, and 7 of this standard.

Organizational Operations

Operations and Evaluation

Organizational Improvement

This module explains the requirements of Clauses 8, 9, and 10 of AS9100D. These requirements are regarding organizational operations, evaluation, and continuous improvement of the organizational operations.

AS9100D Quality Management System (QMS) for Aerospace Industry - Course Assessment

Learn the requirements of AS9100D for the developers and suppliers of components for the aerospace & defense industries.

AS9100D Quality Management System (QMS) for Aerospace Industry

This course explains different clauses and their various requirements for the organizations that develop, design, or supply parts, components, and assemblies concerned with the aerospace and defense industries. After enrolling, the students will be able to navigate the differences between the different versions of the AS standards. Moreover, they will also get a simple and straightforward explanation of this standard's requirements.

Introduction to Hazardous Materials Handling - Learning Outcomes

Understanding Hazardous Materials

Legal and Regulatory Compliance

Importance of Hazard Communication

Risk Assessment and Management

Personal Protective Equipment (PPE) for Hazardous Materials Handling

Introduction to Hazardous Materials Handling - Lesson Summary

In this module, participants will have a solid foundation in understanding hazardous materials, legal and regulatory compliance, hazard communication, risk assessment, and the proper use of personal protective equipment. This knowledge is essential for creating a safe and compliant working environment in industries dealing with hazardous materials.

Hazardous Materials Storage and Transportation - Learning Outcomes

Proper Storage Practices for Hazardous Materials

Managing Segregation and Compatibility of Hazardous Materials

Emergency Preparedness for Hazardous Materials Storage

Transportation Regulations

Handling Hazardous Materials in Transit

Emergency Response Planning

Case Studies and Lessons Learned

Hazardous Materials Storage and Transportation - Lessons Summary

This module covers storing hazardous materials, segregation and compatibility, and developing emergency response plans. Learn DOT regulations, proper labelling, packaging, and security measures for transportation, best practices for loading/unloading and case studies.

Advanced Hazardous Materials Handling Techniques - Learning Outcomes

Decontamination Procedures

Confined Space Entry Protocols

Managing Hazardous Waste

Best Practices for Chemical Spill Response

Continuous Improvement in Hazardous Materials Handling

Advanced Hazardous Materials Handling Techniques - Lesson Summary

This module covers decontamination techniques to ensure health, safety, and regulatory compliance. Learn to manage decontamination zones, handle confined space hazards, and apply physical, chemical, thermal, and radiological decontamination. Develop skills in PPE selection, emergency response planning, and environmental protection.

Hazardous Materials Handling Mastery - Course Assessment

Gain expertise, ensure safety, and excel in hazardous materials handling with this comprehensive free online course.

Hazardous Materials Safety Specialist

This course covers the classification, legal compliance, and risk assessment of hazardous materials. It delves into communication standards, PPE usage, and storage guidelines. Transportation regulations and emergency response planning are also covered. Advanced techniques include decontamination, confined space entry, hazardous waste management, chemical spill response, and continuous improvement through safety audits and case studies.