Electrical Schematics for Maintenance and Troubleshooting

Name: Electrical Schematics for Maintenance and Troubleshooting
Rating: 4.6 (29 reviews)

Part1

Created byAli Hussein Ashraf

Last updated 1/2026

English

English [Auto],

What you'll learn

Understand and interpret Electrical schematics : learners will be able to read and understand various types of electrical schematics
Schematics type and applications : Identify different schematics types and how to use them to identify all project electrical data
Troubleshooting with Schematics : How to use electrical schematics to diagnose and troubleshoot equipment faults effectively
Safety and Standards compliance : Show how to use schematics in identifying point of isolations for safe work on equipment
Revisions and As build drawing : Identify the concept of schematics revisions and how to identify the as built version of project

Course content

4 sections • 33 lectures • 4h 59m total length

Introduction1:52

Drawing title and subtitle3:57
Explore how the title and subtitle anchor electrical drawings, helping you identify the correct single line or schematic diagram and related equipment like ring main unit and 11kV switchgear.
Drawing number and reference drawing3:24
Assign unique drawing numbers and leverage a project index or reference document to quickly locate electrical drawings, such as single-line diagrams, schematics, and power layouts.
Revisions and asbuilt drawing3:34
Example :Motor bearing4:13
Notes4:28
Learn how nodes augment electrical drawings by conveying operation philosophy, protection details, and installation information for substations and equipment layouts.
Page number and page matrix6:10

Basic required knowledge : Contactor and relay2:18
After completing lecture you will be having a basic idea about contactor , relay and their auxiliary contacts that will be exposed to a lot during our lectures
DIGITAL RELAYS, DIGITAL INPUTS AND OUTPUTS, AND BASIC LOGIC FUNCTIONS1:51
Drawer schematics part 116:05
Explore the drawer schematic in low voltage switchgear, detailing main and distribution bus bars, drawers with circuit breakers and protection relays, and motor start sequences.
Technical Helper Notes : Distributed control system DCS1:46
Drawer schematics part 26:59
Explore how a drawer schematic energizes the motor start through local control station, DCS signals, and relays like KFT1 and KFT8 to energize the closing coil and operate the contactor.
Drawer schematics troubleshooting15:52
Technical Helper Notes :Troubleshooting1:31
Switchgear schematics :Power flow16:53
Switchgear schematics: Control voltage and Circuit breaker17:27
Explore the switchgear control circuit, powered by 110 V DC from a DC UPS or battery charger, with 230 V auxiliary loads and circuit breaker protection and testing.
Switchgear schematics: Closing circuit ( Part 1 )20:19
Switchgear schematics: Closing circuit ( Part 2)12:06
Switchgear schematics: Opening circuit22:01
Switchgear schematics: SOR2:13
The sor shunt opening release test unit continuously injects milliamps to monitor the opening coil, triggering an alarm via the test relay if current deviates; a blocking diode protects unit.
Switchgear schematics: Indication11:38
Switchgear schematics: Relaying14:41
Switchgear schematics: ATS logic17:08
Explore switchgear ATS and MTS logic, including how automatic and manual transfer modes close or open encumbers and bus ties to secure loads, with protection relay signals.
Process schematics: Intro3:29
Master process schematics and learn to read electrical panels and their loads in a process area, such as heaters, motors, and capacitor units, to troubleshoot faults quickly.
Process Schematics : Example heater schematics part 121:08
Process Schematics : Example heater schematics part 212:43
Examine how a heater control circuit uses a power transformer to feed base heaters, cooling fans, and earth fault protections, with relays, trip logic, and temperature monitoring.

Requirements

Learners should have foundational understanding of electrical conecepts, prior knowledge in electrical theory , components and basic circuitry

Description

This course is designed to help you understand and confidently read electrical drawings used in practical environments. It introduces the fundamentals of electrical documentation, including schematics, single line diagrams, wiring diagrams, and basic layout drawings. Each topic is explained step by step using clear language and practical examples, making the material accessible even for learners with no prior electrical background.

During the course, you will learn how to identify standard electrical symbols, trace circuits, understand component functions, and recognize how systems are connected and controlled. The course also explains how drawings relate to real equipment, helping you connect theory with hands on applications. This knowledge is essential for technicians, electricians, engineers, and anyone working around electrical systems.

By the end of the course, you will develop essential troubleshooting skills that allow you to analyze drawings, locate faults, and solve common electrical problems safely and efficiently. Whether you are a complete beginner or someone looking to strengthen core skills, this course provides a solid foundation for reading, understanding, and working confidently with electrical diagrams in professional environments. It also supports career growth by improving accuracy, safety awareness, communication, and confidence when interpreting electrical information on site and in documentation daily tasks

Who this course is for:

Graduate electrical engineer who wants to start career in maintenance
Junior electrical maintenance engineer who wants to boost his knowledge and experience in reading and using schematics for troubleshooting
Junior project and Design engineer who wants to take an overview of electrical schematics

Electrical Schematics for Maintenance and Troubleshooting

What you'll learn

Explore related topics

Course content

Introduction1 lecture • 2min

Common sections in electrical drawing6 lectures • 26min

Single line diagram7 lectures • 54min

Schematic Diagrams19 lectures • 3hr 38min

Requirements

Description

Who this course is for: