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
Understanding 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 requirements 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
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
Shock hazards to the human body
Earthing of equipment
Day-2
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
The incidence and probability of a lightning strike
Day-3
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
Earthing electrodes
Soil resistance
Day-4
Resistance of single rod electrodes
Concrete encased electrodes
Corrosion of electrode systems
Chemical electrodes
What is a surge?
Day-5
Bonding of different earthing systems
Surges and surge protection
Principles of surge protection
Definitions of electric noise
Earth loops as a cause of noise
Electrostatic coupling and electromagnetic coupling
