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 has been acquired of maintaining network protection and control systems interdependent All knowledge and skills detailed in this unit should be contextualised to current industry practices and technologies KSTTSA Interdependent network protection and control systems KS01-TTS21A Interdependent network protection and control systems Evidence shall show an understanding of the interdependent network protection and control systems to an extent indicated by the following aspects T Principles of Statutory and safety considerations encompassing CommonwealthStateTerritory legislation standards codes supply authority regulations and or enterprise requirements associated with working on High Voltage Particular reference to State and Territory regulations regarding working near energised conductors electrical access heights confined space testing procedures licensing rules T Electrical equipment associated with protection and control schemes encompassing Types and applications of electrical equipment characteristics capabilities schemes overcurrent frame leakage cooling buchholz DC supplies restricted earth sensitive earth fault CB fail reclose DC frame leakage CEL Fail under frequency load shed and earth fault T Principles of isolation and tagging procedures associated with protection testing encompassing Standards codes CommonwealthStateTerritory legislation supply authority regulations and or enterprise requirements associated with the installation maintenance isolation and tagging procedures Requirements for the use of isolation and tagging manuals system diagramsplans and drawings Techniques in documenting isolations Techniques in appropriate isolation and tagging procedures as per CommonwealthStateTerritory legislation supply authority regulations and enterprise standards Techniques in the installation and maintenance procedures protection devices as per CommonwealthStateTerritory legislation supply authority regulations and enterprise standards T Maintenance and commissioning procedures associated with discrete protection schemes encompassing Standards codes CommonwealthStateTerritory legislation supply authority regulations and or enterprise requirements associated with the maintenance and commissioning procedures Requirements for the use of maintenance and commissioning manuals system diagramsplans and drawings Techniques in maintenance and commissioning procedures planning policy testing techniques Close out requirements T Relay manufacturer specifications encompassing Standards codes Commonwealth StateTerritory and local government legislation supply authority regulations and or enterprise requirements applicable to the use and application of relay manufacturer specifications Requirements for the use of relay manufacturer manuals system diagramsplans and drawings Types function and characteristics of specific relays differences between specific relays used for the same functionality T Safe handling andor disposing of insulation materials used in power distribution devices which are potential environmental pollutants encompassing Standards codes Commonwealth StateTerritory and local government legislation supply authority regulations and or enterprise requirements applicable to the handling and disposing of insulation or heat dissipation materials used in power distribution devices Identification of environmental issues associated with the handling and disposing of insulation materials Safety precautions when handling and disposing of heat dissipation materials safe working practices Occupational Health and Safety hazards and precautions identification of hazards assessing and controlling risks types selection maintenance and uses of personnel protective equipment permit to work systems and isolation procedures types and function of specialised equipment safe working practices when using specialised equipment emergency response and rescue including First Aid etc Techniques in the handling and disposing of insulation materials Polychlorinated BiPhenyls PCBs asbestos insulating Oil SF gas T Procedure to undertake a visual inspection of a scheme encompassing Standards codes CommonwealthStateTerritory legislation supply authority regulations and or enterprise requirements associated with visual inspection procedures of a scheme Requirements for the use of manuals system diagramsplans and drawings Identify obvious deficiencies in operating to the standard functionality Techniques in determining relay malfunction targeting Techniques in determining wiring defects T Operation and maintenance procedures associated with discrete protection and control systems encompassing Standards codes CommonwealthStateTerritory legislation supply authority regulations and or enterprise requirements associated with operating procedures Requirements for the use of operating manuals system diagramsplans and drawings Techniques gas collection and analysis bleeding and resetting calibration operational and sensitivity checks trip and alarm checks Surge relay types and uses including transformer main tanks diverter switch chambers T Measurements and the interpretation and analysis of those measurements related to the plant andor equipment type encompassing Type of measurements timing current voltage capacitance inductance impedance phase angle phase shift resistance dielectric dissipation factor frequency polarisation index ratio vector group temperature Interpretation and analysis the use of techniques digital comparison of data extrapolation use of graphs and charts statistics and tables mathematical calculation of expected values and comparison with manufacturers data and measurements Techniques in the processes involved in followup actions and recommendations resulting from analysis and interpretation of results and measurements T Infrared imaging principles encompassing Standards codes legislation supply authority regulations and or enterprise requirements applicable to Infrared Imaging Requirements for the use of manuals substation diagramsplans and drawings Types of enterprise specific computer software Techniques in storing and retrieving data and reports from the computer Use characteristics and capabilities of specialised tools and equipment Enterprise Specific Policies and Procedures for Infrared Imaging reporting Techniques in evaluating serviceability of circuit breaker operation Procedures for obtaining correct HV switchyard arrangements identification of hazards and controlling risks safety procedures and precautions responsibilities and protocols identifying switching resources Safety precautions when testing and measuring equipment with Infrared Imaging safe working practices and procedures identification of hazards assessment and control of OHS risks types selection maintenance and use of personal protective equipment responsibilities and protocols T Commissioning procedures associated with distribution protection and control systems encompassing Standards codes CommonwealthStateTerritory legislation supply authority regulations and or enterprise requirements associated with the commissioning procedures Requirements for the use of commissioning manuals system diagramsplans and drawings Techniques in commissioning procedures planning policy testing techniques Close out requirements T Operation and maintenance procedures associated with voltage regulation schemes encompassing Standards codes CommonwealthStateTerritory legislation supply authority regulations and or enterprise requirements associated with the operating procedures Requirements for the use of operating manuals system diagramsplans and drawings Principles of operation and operating sequences voltage control VAR control Live BusDead Bus synchronising checks tap changer principles requirements for parallel operations settings grading Techniques associated with isolation requirements enterprise maintenance requirements setting checks LV injections electrical measurements Ancillary equipment which may include transducers Buswire schemes tap position indicators localremote control systems alarm systems Voltage regulation scheme types which may include electro mechanical microprocessor or combinations of both T Types and applications of test equipment encompassing Standards codes Commonwealth StateTerritory and local government legislation supply authority regulations and or enterprise requirements applicable to the use and application of electrical andor electronic test equipment Types and applications of test equipment used on discrete protection scheme Techniques in the use of test equipment electronic test equipment Doble Ohmnicrome gas injection equipment manufactures test equipment multimeters phase angle meters meggers T Electrical equipment associated with distribution field device protection and control schemes encompassing Types and applications of electrical equipment characteristics capabilities schemes automatic circuit reclosers ACRs gas switches secondary injection tests primary injection tests TMR Radios SCADA remote control overcurrent earth fault sensitive earth fault inverse time curves definite time curves tripping reclose DC supplies AC supplies and alarms T Circuit breaker auxiliary systems encompassing Types and characteristics of high pressure air systems including air storage and air handling processes Types and characteristics of DC systems including battery types charging systems protection systems Types and characteristics of special ambient gases SF systems including gas conditioning storage and handling systems Types and characteristics of vacuum interrupters Types and characteristics of oil filled and oil handling T Detailed operation and setting of discrete protection systems encompassing Earth fault protection master earth leakage schemes sensitive earth fault relays and schemes residual earth fault scheme core balance earth fault scheme framestructure earth leakage scheme time graded discrimination backup protection Overcurrent protection feeder overcurrent protection instantaneous overcurrent schemes inverse timed overcurrent schemes types and location of components of an overcurrent scheme CT summation time graded discrimination backup protection Alarms and controls auxiliary relays voltage regulating relays line drop compensation gas relay types gas relay scheme operation and setting over temperature schemes T Detailed operation of interdependent protection systems encompassing Overcurrent and earth leakage schemes including intertripping interlocking and blocking logic mapping master control electromechanical electronic shading coils Pilot wire phase comparison opposed voltage schemes circulating current schemes location of components of a scheme pilot supervisory techniques Load shedding voltage control parallel operation load rejection Busbar Protection and CB failure protection Reclose systems applications single shot multishot blocking schemes synchronisation checking T Procedures for the location and rectification of faults in electrical equipment up to volts AC and or volts DC encompassing Relationship of Occupational Health and Safety to the location and rectification of faults in electrical equipment Act and regulations identification of personal safety workplace hazards working with electrically operated tools and equipment emergency First Aidresuscitation rescue from a live electrical situation enterprise policies and procedures Types of drawings differentiation between symptoms faults and causes in malfunctioning equipment faultfinding techniques and procedures Fundamental electrical concepts effects of current practical resistors sources of EMF series parallel and seriesparallel circuits electrical measurement capacitors inductors magnetism Fundamentals of general appliances basic principles of appliances non mathematical appliance identification appliance ratings basic principles of operation of control equipment and protection devices fault conditions and symptoms safe isolation procedures test equipment safe testing procedures including continuity fault types in appliances faultfinding procedures prescriptive Fundamentals of single phase induction motors basic principles of operation non mathematical motor identification motor ratings basic principles of operation of control equipment and protection devices fault conditions and symptoms safe isolation procedures test equipment safe testing procedure including continuity fault types in phase splitting and universal type motors faultfinding procedures prescriptive Fundamentals of three phase induction motors basic principles of operation non mathematical motor identification motor ratings motor starter principles basic principles of operation of control equipment and protection devices fault conditions and symptoms safe isolation procedures safe testing procedure faultfinding procedures prescriptive Fundamentals of single and three phase electrical heaters basic principles of operation types of electrical heaters electrical heater identification electrical heater ratings basic principles of operation of control and protection devices fault conditions and symptoms safe testing procedure faultfinding procedures prescriptive T Disconnection and reconnection procedures for fixed wiring electrical equipment up to volts AC and or volts DC encompassing Safe electrical work practices and procedures according to standards such as ASNZ or equivalent Safe use of tools and plant Safe use of ladders and elevated work platforms Safe use of protective clothing Hazards in the electrical work environment shock hazards fire hazards chemical hazards other hazardous areas Special situations Procedures for dealing with fires associated with electrical equipment Procedures for dealing with PCBs Electric shock victim rescue methods and procedures basic First Aid treatment for shock burns and bleeding Purpose of each procedure and application expired air resuscitation EAR external cardiaccompression ECC cardiopulmonary resuscitation CPR combined application of EAR and ECC purpose of each procedure and application Components of a basic electrical circuits source control protection load Types of circuit diagrams symbols conventions interpretations free sketches Types of circuit connections and functions open circuit closed circuit short circuit Techniques in basic electrical measurement use of multimeters use of ammeter use of voltage measuring and indicating devices testing of measuring instruments care of measuring instruments voltage current and resistance measurement estimating values of voltage current and resistance using ohms law Fundamental principles of electrical concepts effects of current practical resistors sources of EMF simple practical circuit series parallel and seriesparallel circuits electrical measurement capacitors inductors magnetism Techniques in insulation resistance measurement and requirements Earthing principles and systems T Disconnection and reconnection procedures for fixed wiring electrical equipment up to volts AC and or volts DC encompassing Methods for testing insulation resistance continuity of prospective earthing conductor continuity between exposed conductive parts and the earthing system Methods of recognising acceptable test results for compliance with safety requirements Methods of recognising unacceptable test results and require an appropriate qualified person to further investigation Cable types and conductor termination methods and techniques conductors solid stranded and flexible colour codes Single and three phase systems and loads number of active and live conductors required line and phase voltage typical loads Identification and rating of general appliances Single phase induction motors motor identification motor ratings direction of rotation Three phase induction motors motor identification motor ratings direction of rotation Single and three phase heaters types of heaters heater identification heater ratings Electrical distribution arrangement power systems within premises purpose of switchboardsdistribution boards residual current devices and ELCBs Circuit isolation and protection devices Isolation procedures work clearance testing for voltage lockoff and tagging techniques in isolation and tagging regulation codes of practice and procedures Disconnection procedures practices and requirements Types of replacement equipment Methods of ensuring equipment is safe to connect to supply Methods of reconnection procedures practices and requirements Methods of return equipment to service T Effects of harmonics encompassing Characteristics and effects of harmonics on protection device functionsmalfunction Effects of harmonics on transformers generators motors quality of supply |