Course Details

Electrical Protection System

Course Overview

The course includes an induction session to welcome and orientate the candidate, and familiarize them with the training centre, health and safety requirements and other important policies and procedures. The training consists of a mix of classroom and workshop sessions and various assessments. Upon successful completion, the candidate will gain the knowledge and understanding to enhance their existing skills and to develop and assess their competency in Electrical Protection System.

The course is designed to upskill the engineering technicians working within their trade discipline or appreciating another, where knowledge and understanding may be required.

The course is designed to upskill the engineering technicians working within their trade discipline or appreciating another, where knowledge and understanding may be required.

Upon completing the training course, candidates will be awarded a ‘Certificate of Attendance’ from NTI, attested by the Ministry of Manpower.

Other Details

  • Definition of Grounding and Bonding?
  • Ungrounded system
  • The solidly (or directly) earthed neutral
  • The unearthed neutral, or high impedance-earthed neutral
  • Resistance earthing
  • Reactance earthing
  • Unearthed or impedance-earthed neutral (IT system)
  • Directly earthed neutral (TT system)
  • Connecting the exposed conductive parts to the neutral (TNC – TNS systems)
  • Shock hazard 
  • Equipment grounding
  • Operation of protective devices 
  • Thermal capability & Grounding of equipment 
  • Induced voltage problem
  • Sensing of ground faults 
  • Equipotential bonding 
  • Multiple earthing connections
  • Surge protection earthing
  • Assessment of risks and planning
  • Lightning and surge protection
  • The incidence and probability of a lightning strike
  • Methods of lightning protection
  • Static electricity & Generation of charge
  • Dangers of static build up
  • Bonding of different ground systems as a means of surge proofing
  • Surges and surge protection
  • Surge protection of electronic equipment
  • Achieving graded surge protection
  • Grounding electrodes
  • Soil resistance & Measurement of soil resistivity 
  • Resistance of a single rod electrode 
  • Current-carrying capacity of an electrode 
  • Use of multiple ground rods in parallel 
  • Measurement of ground resistance of an electrode 
  • Concrete-encased electrodes 
  • Corrosion problems in electrical grounding systems
  • Maintenance of grounding system 
  • Chemical electrodes
  • Definition of electric noise
  • Earth loops as a cause of noise
  • Electrostatic coupling and electromagnetic coupling
  • Shielded isolation transformer
  • Avoidance of earth loop

By the end of the module the candidate will be able to :

  • 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
This course is delivered virtually with one day of practical onsite.