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The Complete Surge Protective Device Course
Highest Rated
Rating: 4.6 out of 5(40 ratings)
316 students

The Complete Surge Protective Device Course

Learn How to Protect Electrical Systems with SPDs Like a Pro for Electrical Engineering Students
Highest Rated
Created byEngr. Ahmed Mahdy
Last updated 7/2025
English
English [Auto],

What you'll learn

  • Understand the fundamentals of surge protection and the causes of transient overvoltages in electrical systems, including lightning-induced surges.
  • Explore the inner workings of Surge Protective Devices (SPDs), including the role of Metal Oxide Varistors (MOVs), indicator cartridges, and response mechanisms
  • Gain a solid foundation in SPD classifications and technologies, including Type 1, Type 2, Type 3 SPDs, and their suitable applications.
  • Learn how to accurately select SPDs based on system voltage, protection level, current capacity, and installation environment.
  • Master the installation techniques for SPDs, including wiring guidelines, conductor sizing, coordination with breakers/fuses, and placement for optimal protecti
  • Understand technical parameters such as voltage protection level (Up), maximum discharge current (Imax), nominal discharge current (In), and residual voltage
  • Become confident in implementing SPD solutions for residential, commercial, and industrial electrical installations

Course content

3 sections • 20 lectures • 3h 12m total length

  • Introduction to Surge Protection Device (SPD)8:46
  • Principle of Operation of Surge Protection Device (SPD)6:53

    The SPD sits in parallel with the loads and remains an open circuit during normal operation, then provides a low impedance path to ground to divert overvoltage current.

  • Metal Oxide Varistor (MOV)9:14

    Show how a metal oxide varistor (mov) acts as a fast, voltage-dependent resistor that clamps overvoltage surges by diverting excess energy to ground, protecting circuits and equipment.

  • Installation of a Surge Protection Device (SPD)6:36

    Install a surge protection device in single-phase and three-phase systems by wiring it in parallel to line and neutral, with earth as the discharge path during overvoltage.

  • SPD Indicator and Cartridge5:22

    Learn how an SPD indicator shows end-of-life status for surge protective devices, with green/red indicators and LED status on each cartridge, enabling targeted replacement of failed cartridges in 3-phase systems.

  • Lightning Phenomenon9:18

    Explore lightning waveforms and direct versus indirect strikes, explain air breakdown at 30 kV/cm, and relate peak currents up to 200 kA to surge protective design.

  • Direct and Indirect Lightning Waveforms11:40

    Explain lightning voltage and current waveforms, including rise time, time to peak, and time to 50%, and distinguish direct (10/350) and indirect (8/20) impulse types per IEC 660.

  • Course Files and Slides0:09

Requirements

  • No prior requirements except the basics of electrical power engineering.

Description

Protect your electrical systems like a pro!


Surge Protective Devices (SPDs) are essential for ensuring safety, reliability, and compliance in modern power systems. Whether you're an electrical engineer, technician, student, or contractor, this course will equip you with the knowledge and practical skills to select, install, and maintain SPDs with confidence.

In this comprehensive training, you'll learn about surge protection—from the fundamental science of transient overvoltages and lightning strikes to the technical intricacies of SPD technologies, device ratings, coordination strategies, and real-world installation practices.

By the end of the course, you’ll be able to design surge protection systems that meet international standards and protect critical electrical infrastructure from costly damage.


What You’ll Learn


  • Understand what causes electrical surges and how SPDs protect systems from them

  • Learn the working principles of SPDs, including MOVs, spark gaps, and indicator cartridges

  • Differentiate between Type 1, Type 2, and Type 3 SPDs, and where to apply each

  • Master SPD selection based on voltage, current capacity, and protection level

  • Apply industry best practices for correct wiring, placement, and conductor sizing

  • Ensure proper overcurrent protection and device coordination

  • Understand how to troubleshoot and maintain SPD systems


This is not just theory — it’s a practical, career-enhancing guide to one of the most important aspects of modern electrical systems.


Join now and become an expert in surge protection!

Who this course is for:

  • Electrical engineers and designers working in low-voltage and medium-voltage systems
  • Professionals seeking to upgrade skills in electrical protection and compliance
  • Students and graduates in electrical or power engineering
  • Anyone who wants to protect equipment and prevent damage from transient overvoltages

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