8) Essential Knowledge and Associated Skills (EKAS): This describes the essential skills and knowledge and their level, required for this unit. Evidence shall show that knowledge of performing rail traction switching operations to a given schedule has been acquired. All knowledge and skills detailed in this unit should be contextualised to current industry practices and technologies. KS01-TRT30A Rail traction switching Evidence shall show an understanding of rail traction switching operations to an extent indicated by the following aspects: T1 Installation of overhead distribution conductors encompassing: Standards, codes, legislation, supply authority regulations and or enterprise requirements applicable to installing conductors and associated equipment Requirements for the use of overhead line construction manuals, system diagrams/plans and drawings - material lists, conductor size, type and route length. Constructions types and structures for distribution and sub transmission lines Types, sizes and characterises of overhead conductors Resources for the stringing and maintenance of conductors - types of low and high voltage overhead electrical conductor connections, causes and effects of poor electrical connections, reasons for and methods used to maintain standard phase sequencing, removing, repairing and replacing of damage conductors, minimum clearances between overhead conductors and low and high voltage structures. Techniques for conductor installation - types and application of tools, equipment and hardware Methods of stringing, tensioning and termination of low and high voltage conductors T2 Safe working practices and procedures for the installation of overhead distribution conductors encompassing: Limits of approach for personnel, vehicles, mobile plant and elevating work platforms (EWP) Requirements of persons prior to making bare hand contact with dead low voltage mains and apparatus Requirements of relevant electrical access permits necessary to allow work to be performed on low and high voltage apparatus Safe working practices - requirements to enable safe working on conductive poles, procedure to attach an “on-site” earthing device to de-energised low and high voltage overhead circuit T3 Installation of switchgear and associated equipment encompassing: Types and function of various switchgear - isolators, air-break switches, gas-filled switches, vacuum type, links, fuses, oil disconnectors, fuse switches, circuit breakers, operating characteristics, advantages and disadvantages of different types switchgear, installation procedures, earthing, requirements and techniques Types of equipment - transformers, reactors, regulators, capacitors, relays, surge arrestors, fault indicators and mobile generators Installation procedures for switchgear and equipment - standards, codes, legislation, supply authority regulations and or enterprise requirements, assembly and erecting procedures, earthing requirements and techniques, pole mounted locations Maintenance procedures for switchgear and equipment - diagnosing and rectifying faults according to electricity supply industry standards and procedures, Testing and commissioning - electricity supply industry standards and procedures. T4 Low voltage switching principles encompassing: Standards, codes, legislation, supply authority regulations and or enterprise requirements applicable to switching of low voltage to a given schedule Requirements for the use of manuals, system diagrams/plans and drawings - types, characteristics and capabilities of electrical apparatus, use, characteristics and capabilities of specialised tools and testing equipment, LV network interconnectors source of possible backfeed Low voltage switching techniques - identifying hazards, assessing and controlling risks associated with LV switching operations, electrical access permit(s), operational procedures, earthing procedures Personnel protective equipment (PPE) for LV switching |