Safe Operations of High Voltage & Low Voltage Electrical Systems

Course structure:

Monday
•Electrical Safety
•Basic electrical theory
•Proving dead with approved methods and indicators
•Safe use of multi-meters and their limitations
•Test leads to GS38 standard

Tuesday
•Basic three phase principles – Single and three phase generation
•Prospective fault currents
•LV protection – Fuses, Circuit Breakers, Transformers, RCD’s
•Discrimination and diversity in electrical systems

Wednesday
•Earthing methods and bonding and the importance of earthing
•Induction motor operation, starting methods and testing
•Electrical test equipment – The safe use of the ‘Megger’
•Capacitance and inductance in electrical circuits – Safety implications
•Motor protection - Thermal, magnetic electro mechanical and electronic relays
•Feeder, transformer and generator protection overview

Thursday
•Methods of achieving discrimination with time,magnitude and comparison
•Understanding of the component parts in common electrical control panels - overloads, isolator, timers, relays, control, indication and power circuits
•Reading and understanding schematic diagrams
•Competence – familiarity with LV and HV installed systems
•Safe systems of work for dead fault finding techniques and practice
•Electric arcs awareness session
•Switching sequences for HV systems – Precautions; dead, isolated and earthed; risks, identified, Document,methods, general safety

Friday
•Switching procedure and instructions
•Preparing exercises in syndicate groups, basic switching instructions and fault finding tasks
•HV switching exercise