Course Description

Poor grounding practice can be the cause of continual and intermittent difficult-to-diagnose problems in a facility. The aim of this course is to increase awareness of and importance of correct earthing practices to ensure safety of personnel plant and equipment and at the same time to understand the codes that govern the designs and installations

Course Objectives

·         Identifying safety hazards created by ineffective grounding systems

·         Understandig the effect of connecting grounded and bonded systems

·         Being familiar with  the different earthing systems, principal design considerations and methods of lightning protection systems

·         Understanding how to protect personnel, plant and equipment during an earth fault or lightning strike

·         Being familiar with the requirments to design, install, test, and maintain correct earthing and lightning protection systems

Who Should Attend?

·         Building service designers

·         Design engineers

·         Field technicians

·         Electricians

·         Plant engineers

·         Electrical supervisors

·         Maintenance engineers

·         Power system protection and control engineers

·         Project engineers

·         Safety professionals

Program Schedule

DAY 1

·         Basics of earthing, bonding, 

·         lightning and surge protection

·         Shielding

·         UPS systems and their earthing practice

·         Unearthed and solidly earthed systems

·         Impedance earthed systems

·         Resonant impedance earthed systems

·         Practical: calculation of charging current and neutral impedances

DAY 2

·         Shock hazards to the human body

·         Earthing of equipment

·         Operation of protective devices

·         Thermal capacity of earthing wires

·         Touch potential

·         Induced voltages

·         Multiple earthing connections

·         Surge protection earthing

·         Practical: safe touch voltage and sizing of earthing conductors

DAY 3

·         The incidence and probability of a lightning strike

·         Methods of lightning protection

·         Planning for lightning protection

·         Improvements to lightning protection

·         What is static electricity?

·         Generation of charge

·         Dangers of static build up

·         Assessment of risks and planning

DAY 4

·         Earthing electrodes

·         Soil resistance

·         Resistance of single rod electrodes

·         Concrete encased electrodes

·         Corrosion of electrode systems

·         Chemical electrodes

·         What is a surge?

·         Bonding of different earthing systems

·         Surges and surge protection

·         Principles of surge protection

DAY 5

·         Definitions of electric noise

·         Earth loops as a cause of noise

·         Electrostatic coupling and electromagnetic coupling

·         Shielded isolation transformer

·         Regulating transformers

·         Standby sources

·         Earthing practices