Course Description

This advanced 5-day training program focuses on the inspection, maintenance, protection, and troubleshooting of high-voltage (HV) electrical insulation systems, with special emphasis on coated and lined insulation surfaces as well as station-class insulators used in substations and switchyards. Participants will explore insulation degradation mechanisms, surface contamination effects, coating applications, and condition-based maintenance strategies to extend service life and enhance system reliability.

Through a combination of theoretical learning and hands-on activities, attendees will gain the knowledge needed to maintain insulation integrity, apply protective coatings, evaluate insulator performance, and troubleshoot insulation failures in HV environments.

Course Objectives

Upon the successful completion of this course, each participant will be able to:

  • Understand the types and functions of HV insulation systems, coatings, and station insulators
  • Identify causes and effects of insulation degradation and surface contamination
  • Evaluate condition and performance of HV insulators and coated components
  • Select and apply appropriate insulation coatings and lining materials
  • Implement condition-based maintenance and diagnostic testing techniques
  • Troubleshoot common insulation and flashover issues in substations
  • Apply safety protocols and industry standards in HV insulation maintenance

Who Should Attend?

This course is designed for Electrical Maintenance Engineers and Technicians, Substation and Switchyard Operators, HV System Inspectors and Testers, Asset and Reliability Engineers, Power Utility Technicians and Field Personnel, Project Engineers involved in HV system design and maintenance & Coating Applicators and Insulation Maintenance Contractors.

Course Agenda

Day 1

Registration, Welcome & Introduction

Pre-Test

HV Insulation Systems – Fundamentals & Components

  • Overview of HV systems and insulation principles
  • Types of insulators: porcelain, glass, composite, polymer
  • Station-class insulators: applications and performance characteristics
  • Insulation failure modes: tracking, erosion, flashover, mechanical damage
  • Introduction to insulation coatings and linings

Day 2

Degradation Mechanisms and Surface Contamination

  • Electrical stress, pollution, and weather effects on insulators
  • UV, moisture ingress, and corona discharge damage
  • Surface leakage currents and contamination classification (IEC 60815)
  • Monitoring insulator performance under harsh conditions
  • HVAC maintenance records and reporting
  • Case study: Insulator failure in coastal and desert environments

Day 3

Protective Coatings & Lining Technologies

  • Types of coatings: RTV silicone, epoxy, hydrophobic compounds
  • Selection criteria for coating materials
  • Surface preparation and application methods
  • Coating performance tests (dielectric strength, adhesion, aging)
  • Coating failure analysis and repair procedures

Day 4

Monitoring and Maintenance Strategies

  • Infrared thermography and UV detection
  • Leakage current monitoring and trending
  • Insulation resistance and power factor testing
  • Insulator washing and live-line maintenance techniques
  • Maintenance planning and documentation

Day 5

Troubleshooting and Case-Based Analysis

  • Common insulator and insulation coating problems
  • Substation insulation troubleshooting framework
  • Root cause analysis of insulator flashovers
  • Best practices for extending insulation service life
  • Safety procedures and PPE requirements for HV environments

Post-Test

End of the Course

Assessment Methodology

All courses conducted by EdTech will begin with a Pre-evaluation and end with a Post-evaluation. The instructor will evaluate the knowledge and skills of the participants according to the feedback given by participants. This will help to recognize the benefits and the level of knowledge gained by participants through the course.

Training Methodology

Facilitated by a highly qualified specialist, who has extensive knowledge and experience; this program will be conducted using extensively interactive methods, encouraging participants to share their own experiences and apply the program material to real-life work situations in order to stimulate group discussions and improve the efficiency of the subject coverage.

Percentages of the total course hour classification are:

  • ​40% Theoretical lectures, Concepts and approach
  • 20% Motivation to develop individual skill and Techniques
  • 20% Case Studies and Practical Exercises
  • 20% Topic General Discussions and interaction

Course Manual

Participants will be provided with comprehensive presentation material as reference manual. This presentation material is a compilation of core valuable information, references, presentation methods and inspiring reading which will be used as a part of the material guide.

Course Certificate

At the completion of the course, all participants who successfully accomplished the required contact hours will receive an EdTech Training Participation Certificate as a testimony to their commitment to professional development and further education.

Why Edtech ?

  • Industry Experienced; Internationally Qualified Trainers
  • Hands-on Practical Sessions & Assignments
  • Intensive Study materials
  • Flexible Schedules
  • Realistic training methodology
  • High-Quality Training in Affordable Course Fees
  • Achievement Certificate, as approved by the Ministry of Education (Abu Dhabi Center for Technical and Vocational Education Training - ACTVET), HABC, AWS, IAOSHE, SHRM, etc.