Grounding and Bonding of Electrical Systems

Grounding and Bonding of Electrical Systems

Description
Grounding and bonding systems ensure that electrical systems are safe from electric shock and fires by limiting the voltage imposed by lightning, line surges, or unintentional contact with high voltage lines as well as a ground-fault. An integrated approach of theory and practice will ensure you have a firm foundation of knowledge when you begin your next design or construction project, or when you encounter problems in your electrical system which must be corrected for safety, operational or power quality reasons.

Case studies will be presented to discuss grounding and bonding applications in a variety of areas (industrial and substation) in order to reinforce fundamental grounding principles common to a variety of applications.

Overview

After participating in this course, you will be able to:

  • Identify and prevent safety hazards to personnel who come in contact with electrical systems
  • Prevent equipment failures and malfunctions by employing proper grounding techniques
  • Interpret codes and standards related to grounding
  • Ensure proper operation of communication, computer and control systems by proper grounding and bonding
  • Apply to your projects lightning protection methods

Who Should Attend
Electrical Engineers • Design Engineers • Managers • Project Managers • Power Quality Specialists • Maintenance Managers • Consultants • Electronics & Controls personnel • Traffic Signal Designers & Operators • Technologists

Courses Outline

Day I

Welcome, Introduction, Workshop Preview, Learning Outcomes and the Assessment Method

Introduction

  • Definitions
  • Electrical code objectives
  • Ground currents
  • Resistance and resistivity
  • Electrical shock hazards

What Is Grounding?

  • Grounding methods
  • Electrical code requirements
  • System grounding – single and multiple services
  • Unwanted current flow
  • Grounding electrodes and grounding methods
  • Effects of emergency generators

Electrical Safety Grounding

  • Common electrical hazards
  • Rules for working around live electrical equipment
  • Electrical safety grounding
  • Electrical code clearances

What Is Bonding?

  • Grounding and bonding – the differences
  • Body resistance and electric shock
  • Bonding definition and purposes
  • Electrical code requirements
  • Methods of bonding and what must be bonded
  • Single point bonding

Other Important Information

  • Ground faults – impedance effects and effective fault paths
  • Earth resistance vs. resistivity
  • Ground fault protection
  • Single conductor cables – circulating and eddy currents

Questions and Answers

 

Day II

Substation Grounding

  • Permissible body currents
  • Step and touch potentials
  • Grounding resistance and resistivity
  • Substation ground electrodes
  • ANSI/IEEE grounding standard

Electronic Equipment

  • Frequency and power quality
  • Frequency response of conductors
  • Minimizing electrical interference
  • Shielding methods

Lightning Protection

  • The nature of lightning
  • Lightning protection principles and methods
  • Protection equipment and grounding methods
  • Surge protection and insulation coordination

Measurement Techniques

  • Ground resistance and resistivity
  • Effects of moisture and temperature
  • Measurement methods

Case Study I – Retrofitting an Existing Installation

Case Study II – Surge Protection

 

 

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Catatan :

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