Power Cables: Construction, Types, Sizing, And Testing

Voltage drop calculation, cable sizing calculation, short circuit rating, IR & Hipot Test, cables installation

What you'll learn

• Fundamental knowledge of Power Cables

• Parts of power cable: Conductor, Insulation, Sheath, Bedding, Armour, Serving

• Types of power cable based on voltage level, number of cores, type of insulation, construction of cable

• Nomenclature of cable

• Insulation Resistance (IR) test • high-potential DC testing (Hipot) of cables

• Cable Selection parameters • Cable sizing calculation • VOlatge drop calculation • Short Circuit study • Cable Installation

Requirements

Basic knowledge of electrical circuits is recommended. The course is structured to be accessible to both beginners and experienced professionals.

Description

“Power Cables: Construction, Types, Sizing, and Testing”, it is a comprehensive course provides an in-depth understanding of power cables, covering everything from their basic construction to advanced testing and sizing methodologies. Power cables are a critical component of electrical infrastructure, and their proper selection, installation, and maintenance are essential for safe and efficient power distribution.Throughout this course, participants will gain expertise in the various types of power cables, their components, nomenclature, and applications. The course will cover the factors affecting cable selection, sizing calculations, voltage drop considerations, and short circuit analysis. Additionally, it will explore essential testing techniques such as Insulation Resistance (IR) testing and High-Potential (HiPot) testing to ensure reliability and safety.By the end of the course, participants will have the knowledge and skills required to confidently work with power cables in industrial, commercial, and residential electrical systems.Learning Objectives:By completing this course, participants will be able to:· Understand the fundamental concepts of power cables and their importance in electrical systems.· Identify different types of power cables based on voltage levels, insulation materials, construction, and applications.· Analyze the advantages and disadvantages of various cable types.· Explain the function of each part of a power cable, including the conductor, insulation, sheath, bedding, Armor, and serving.· Interpret cable nomenclature and standard designations.· Perform insulation resistance (IR) testing, understand test connections, procedures, and necessary precautions.· Conduct high-potential (HiPot) DC testing of cables and understand its significance in insulation verification.· Evaluate key parameters for cable selection, considering factors such as current-carrying capacity, environmental conditions, and mechanical stress.· Perform cable sizing calculations based on load, conductor material, length, voltage rating, and the number of runs for both single-phase and three-phase cables.· Calculate voltage drop and understand its effects on electrical systems.· Identify factors affecting voltage drop and implement strategies to minimize it.· Conduct a short circuit study to ensure cables can withstand fault conditions safely.

Overview

Section 1: Introduction to Power Cables

Lecture 1 Introduction

Lecture 2 What is a Power Cable?

Lecture 3 Advantages and disadvantages of power cable

Lecture 4 Basic Components of a Power Cable

Lecture 5 Skin Effect

Section 2: Power Cable Construction

Lecture 6 Conductor, its properties and Types (Solid and Stranded)

Lecture 7 Conductor Screen and its purpose

Lecture 8 Insulation Materials, its properties, significance and Dielectric Strength

Lecture 9 Insulation Screen and its purpose

Lecture 10 Sheath and its usages

Lecture 11 Bedding and its usages

Lecture 12 Armouring: Usages and its types

Lecture 13 Serving

Section 3: Classification of power cable

Lecture 14 Classification of power cable: Number of conductors

Lecture 15 Classification of power cable: Voltage rating of cable

Lecture 16 Classification of power cable: Type of insulation

Lecture 17 Classification of power cable: Construction of cable, belted, screened, pressure

Lecture 18 Classification of power cable: Installation and laying of cables

Section 4: Nomenclature of cable

Lecture 19 Nomenclature of cable

Section 5: Voltage Drop Calculations

Lecture 20 Voltage Drop and its effects

Lecture 21 Factors Affecting Voltage Drop

Lecture 22 How to Reduce Voltage Drop?

Lecture 23 Voltage Drop Calculation

Lecture 24 Cable Derating

Section 6: Cable Selection Parameters

Lecture 25 Cable Selection Parameters

Lecture 26 Demerits of Oversized and undersized cable

Lecture 27 Cable selection parameters: Based on Length

Lecture 28 Cable selection parameters: Based on Conductor Material

Lecture 29 Cable selection parameters: Based on Load

Lecture 30 Cable selection parameters: Based on number of runs

Lecture 31 Cable selection parameters: Based on power Factor

Section 7: Insulation Resistance Test

Lecture 32 Need to check insulation resistance, factors affecting IR

Lecture 33 Cable preparation, connection, test execution and interpretation

Lecture 34 Cable connection for single and three phase cables

Lecture 35 Insulation resistance test record format

Section 8: Oxygen index TEST, Smoke density test, Acid Gas Generation Test

Lecture 36 Oxygen index TEST and its Significance

Section 9: Practice Test

Electrical engineers and technicians involved in power distribution and installation,Maintenance and reliability engineers handling power cable infrastructure,Electrical contractors and project managers working on cable installations,Professionals preparing for certification exams in power system engineering,Students and fresh graduates in electrical engineering seeking practical knowledge of power cables