Electrical Schematics and Control Circuits

Introduction:

This course on Electrical Control Circuits and Drawings commences with presenting fundamental drawings and symbols that assist in representing the appliances vital in the electrical installation process to facilitate smooth functioning and reliability. Any electrical system cannot be installed, operated, or repaired without the use of such critical documents, along with the ladder diagrams concept known as electrical drawings.

Wiring graphic symbols, drawing circuits, and graphics involving wiring are instruments that nourish the components of electrical installation equipment workability. This program has been made available to all the participants of the course who are going to tackle the reading of electrical blueprints and the tracing of circuits.

The students will be oriented towards enrichment in the industry standards and practices, knowing the flow of power, as well as the types of installed equipment. Frank diagrams and ladder diagrams will be used in support of the discussed components system wiring diagrams in electrical systems. Wiring diagrams may also be evident to warrant a stepwise understanding of troubleshooting skills.

Objectives:

At the completion of the course on Electrical Control Circuits and Drawings, the students will be able to:

• Enumerate the types of electrical drawings available.
• Appreciate the importance of single-line diagrams.
• Examine various electrical ladder components.
• Utilize circuit diagrams and wiring schematic diagrams to describe how electrical devices work.
• Name the conventional symbols employed in electrical drawings.

Training Methodology:

• Group Discussions
• Hands-On Workouts
• Lectures by Experts
• Workshops
• Software Training
• Case Studies

Course Outline:

Unit 1: Types of Drawings and Symbols

• Importance and relevance of technical drawings.
• Classification of electrical drawings along with their features.
• Varieties of electrical drawings for different purposes.
• Standard symbols and drawings for electrical work across the world.
• Purpose and functionality of numerical relays.
• CTs and VTs and their information in electrical drawings.

Unit 2: Nav and Sign of a Single-Line Diagram

• Starting point of a single-line diagram.
• Single-line diagrams in electrical engineering and their importance.
• Drafting standards and structural drawing elements.
• Device coordination on single-line diagrams and electrical interlocks.
• Information gathered from a single-line diagram to assist fault current calculations.
• Troubles and devices, and diagrams for electrical programming.

Unit 3: Works Upon Ladder Diagrams

• Classes of ladder diagrams used.
• Ladder diagrams of generic electrical equipment.
• Circuit control design work.
• Interlocking control diagrams.
• Ladder diagrams of protective relays and timers.
• Protection Class: Fail Secure / Fail Safe construction.

Unit 4: Schematics and Control Circuits with their Benefits

• Operation of VFD schematic for related control action.
• Functional elements of UPS power supply system and a schematic diagram.
• Analyzing and following AC Input schematic and its relevance.
• Determine units functioning in the receiver, inverter, and AC outputs in schematic diagrams.
• Schematics, wiring, operation, and functional diagrams of types of protection relays.
• Schematic for customer wiring for motor installation and control circuits.

Unit 5: Logic Circuits Applications and Troubleshooting Strategies

• Logic gates and their characteristics.
• Digital logic functions.
• Introduction to Programmable Logic Controller (PLC).
• Process and Instrument Diagrams.
• Methods of fault repair.