
Explore electrical drawings from substations and power plants, including miniature circuit breakers, motor circuits, annunciators, and single-line diagrams with protection symbols and NC codes.
learn the miniature circuit breaker symbol in schematics, including single-pole, two-pole, and three-pole mcb configurations, alpha-numeric naming (q, 1-4), and indicators for thermal overload and short-circuit protection.
Explore two-pole MCBs with gang operation, where both poles trip together and are linked mechanically. Understand terminal numbering, polarity, and schematic indicators for on/off status and protection features.
Demonstrate how two-pole MCBs are represented in schematics, showing source versus load connections, panel context, and the rule to route external wiring through terminal blocks.
Explore three-pole MCBs and their gang operation for three-phase ac supply, with series and parallel pole arrangements to increase braking capacity and distribute protection between positive and negative sides.
Explore auxiliary contacts in schematics, showing how they mirror MCB status to enable remote indication, alarms, and control circuits for protection and fault handling.
Illustrates auxiliary contacts on the mcb and their mechanical linkage to the main breaker. Demonstrates normally open and normally closed contacts and a built-in test option for verification.
Explore normally open and normally closed contacts in miniature circuit breakers, including auxiliary contacts and common terminals, and see how NO/NC states switch bulbs as the MCP position changes.
learn how mcb auxiliary contacts and changeover nc/no configurations are depicted in schematics, with sheet references and dc changeover circuits, including trip indication on sheet 40.8.
Demonstrate how ac sockets appear in schematics, with phase, neutral, and grounded body, and illustrate production and control panels wiring through terminal blocks and mcbs.
Unlock the world of electrical drawings and schematics with our comprehensive online course. Designed for beginners and enthusiasts in electrical engineering, this course dives deep into understanding and interpreting electrical diagrams. From the basics of MCBs to advanced concepts like auxiliary relays and current transformers, you'll gain the knowledge and skills needed to confidently navigate and create electrical schematics.
Trainer Introduction:
Your trainer brings over 21 years of experience in operation & maintenance, erection, testing, project management, consultancy, supervision, substation automation, SCADA, and commissioning. With a background spanning power plants, high voltage substations, and HVDC installations, he has worked with renowned organizations such as Siemens Saudi Arabia. He has been involved in over 20 high-voltage substation projects across Pakistan and Saudi Arabia.
His expertise encompasses a wide range of areas including protection systems, substation automation systems, design, testing, and commissioning of power generation systems, high voltage switchgear, protection relays, and control schemes. He has a proven track record of leading testing and commissioning teams for implementing electrical infrastructure projects for industrial clients, including steel and petrochemical industries.
Course Outline:
Module 1: Introduction to Electrical Drawings
Understanding the significance of electrical drawings in engineering projects.
Overview of symbols and conventions used in electrical schematics.
Module 2: Mini Circuit Breakers (MCBs)
Exploring different types: Single pole, Two pole, and Three pole MCBs.
Visualizing MCBs in drawings and their representations.
Auxiliary contacts: Their role and importance in MCB applications.
Module 3: Contact Types and Symbols
Decoding normally open (NO) and normally closed (NC) contacts.
Unraveling the working of auxiliary relays and their use in panel wiring.
Diving into time-delayed contacts and the significance of changeover contacts.
Module 4: AC Socket Symbol and Drawing
Understanding the AC socket symbol in electrical schematics.
Demonstrating how to incorporate AC sockets in drawings.
Module 5: Terminal Blocks and Ferrules
Introduction to terminal blocks and their relevance in electrical installations.
Learning how to depict terminal blocks in drawings.
Exploring ferrules and mastering the art of addressing them effectively.
Module 6: Magnetic Contactors
Differentiating between auxiliary relays and magnetic contactors.
Understanding the unique functionalities of magnetic contactors.
Module 7: Current Transformers (CTs)
Defining the role and significance of current transformers.
Unveiling the circuitry associated with current transformers.
Module 8: Putting It All Together
Practical exercises and examples to reinforce your learning.
Creating your own simplified electrical schematic incorporating the concepts covered.
Course Benefits:
Gain a solid understanding of electrical drawings and schematics.
Enhance your ability to interpret and create accurate electrical diagrams.
Grasp the functions of components like MCBs, auxiliary contacts, and CTs.
Learn through interactive exercises and real-world examples.
Obtain a course completion certificate to showcase your expertise.
Join us on this illuminating journey through electrical drawings and schematics. Master the art of reading and creating accurate diagrams that are the backbone of electrical engineering projects. Enroll today and open the door to a world of electrical expertise!