Safe Operation of HV/LV Electrical Systems

  • Objectives

    To raise the candidates underpinning knowledge to a level where they will be aware of their own competence boundaries, be able to understand simple L.V and H.V electrical drawings, systems and testing. To develop the candidates understanding and knowledge of safe systems of work, for tasks on or near electrical equipment at LV and HV to 11 kV.

    Content

    Day 1 start 08.30

    • Introduction, course objectives, content and expectations

    • The Management of Health and Safety at Work, Guidance on Electricity at Work and risk assessment

    • Competence – the importance of your skills, capability, training and experience

    • Fundamental electrical principles – Three effects of current on a conductor

    • Electrical terminology – Volts, Amps, Ohms, Watts.

    • Safe use of multi-meters and their limitations

    • Basic three phase principles – Single and three phase generation

    • Electrical Safety – Live or Dead video – 1 case study

    • Capacitance and inductance in electrical circuits – Safety implications

    • Electrical test equipment – The safe use of Megger & Clip on ammeter

    • Transformers – Centre tap, equipotential and isolating

    • Proving dead with approved methods and indicators

    Day 2

    • Fuse types and M.C.B’s

    • Perception of electrical shock

    • Methods of reducing the risk – R.C.D’s and reduced voltage

    • Prospective fault currents - fused leads video

    • Presentation and case studies from H.M factory inspector

    • Electric arcs – awareness session

    • Discrimination and diversity in electrical systems

    • Earthing methods and bonding and the importance of earthing

    • Induction motor starting methods

    • Induction motor testing

    Day 3

    • Motor protection - Thermal, magnetic electro mechanical and electronic relays

    • Feeder, transformer and generator protection overview.

    • 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 (Pump Simulator & Generation HV board

    • Competence – Assessment test

    • Safe systems of work for dead fault finding techniques and practice

    • Fault finding practical on 415V pump simulator

    Day 4

    • The Management of H&S at Work, the Electricity at Work and the Provision and Use of Work Equipment Regulations – what compliance should mean to you.

    • Investigate H.V switch gear construction including the operation of interlocks and earthing devices

    • Switching sequences for H.V systems – Precautions; Dead, isolated and earthed; Risks, Identified, Document, Methods, General Safety.

    • Standard terminology

    • Approved abbreviations

    • Switching Procedure and Instructions

    • Preparing exercises in syndicate groups -basic switching instructions and fault finding tasks

    Day 5

    • Discuss switching instruction and fault-finding exercises.

    • Practical switching and fault location on the Generation HV System.

    • Summary, feedback session and close

    Audience

    Personnel involved in the operation and maintenance of industrial and power generation plant.

    Maximum numbers

    8 Delegates

    Duration

    5 days