This describes the essential skills and knowledge and their level required for this unit Evidence shall show that knowledge has been acquired of safe working practices and applying Occupational Health and Safety practices in the workplace All knowledge and skills detailed in this unit should be contextualised to current industry practices and technologies KSTISA Remote area circuits and apparatus KS01-TIS32A Remote area circuits and apparatus Evidence shall show an understanding of remote area circuits and apparatus to an extent indicated by the following aspects T Parallel circuits encompassing schematic diagram of a singlesource dc parallel circuit major components of a parallel circuit power supply loads connecting leads and switch applications where parallel circuits are used in the Remote community ESI industry characteristics of a parallel circuit load connection current paths voltage drops power dissipation affects of an open circuit in a parallel circuit relationship between currents entering a junction and currents leaving a junction calculation of the total resistance of a parallel circuit calculation of the total current of a parallel circuit Calculation of the total voltage of a parallel circuit setting up and connecting a singlesource dc parallel circuit resistance voltage and current measurements in a singlesource parallel circuit voltage current resistance or power dissipated from measured values of any of these quantities T Seriesparallel circuits encompassing schematic diagram of a singlesource dc seriesparallel circuit major components of a seriesparallel circuit power supply loads connecting leads and switch applications where seriesparallel circuits are used in the Remote community ESI industry characteristics of a seriesparallel circuit load connection current paths voltage drops power dissipation affects of an open circuit in a seriesparallel circuit calculation of the total resistance of a seriesparallel circuit calculation of the total current of a seriesparallel circuit calculation of the total voltage and the individual voltage drops of a seriesparallel circuit setting up and connecting a singlesource dc series parallel circuit resistance voltage and current measurements in a singlesource dc series parallel circuit voltage current resistances or power dissipated from measured values of any two of these quantities T Factors affecting resistance encompassing four factors that affect the resistance of a conductor type of material length crosssectional area and temperature affect the change in the type of material resistivity has on the resistance of a conductor affect the change in length has on the resistance of a conductor affect the change in crosssectional area has on the resistance of a conductor effects of temperature change on the resistance of various conducting materials effects of resistance on the currentcarrying capacity and voltage drop in cables using digital and analogue ohmmeter to measure the change in resistance of different types of conductive materials copper aluminium when those materials undergo a change in type of material length crosssectional area and temperature T Effects of meters in a circuit encompassing selecting an appropriate meter in terms of units to be measured range loading effect accuracy and safety category of meters for a given application instruments used in the field to measure voltage and current the typical circumstances in which they are used hazards involved in using electrical instruments and the safety control measures that should be taken operating characteristics of analogue and digital meters correct techniques to read the scale of an analogue meters and how to reduce the parallax error types of voltmeters used in the ESI industry bench type clamp meter Multimeter etc purpose and characteristics internal resistance range loading effect and accuracy of a voltmeter types of voltage indicator testers eg LED neon solenoid voltstick series tester etc and explain the purpose of each voltage indicator tester operation of various voltage indicator testers Explain the advantages and disadvantages of each voltage indicator tester List the various types of ammeters used in the ESI industry bench clamp meter multimeter etc Explain the purpose of an ammeter and the correct connection series of an ammeter into a circuit Explain the reasons why the internal resistance of an ammeter must be extremely low and the dangers and consequences of connecting an ammeter in parallel andor wrong polarity Connect an analoguedigital voltmeter into a circuit ensuring the polarities are correct and take various voltage readings Demonstrate the loading effect of various voltmeters when measuring voltage across various loads Use a variety of voltage indicator testers to detect the presence of various voltage levels Connect an analoguedigital ammeter into a circuit ensuring the polarities are correct and take various current readings steps and procedures for the safe use care and storage of electrical instruments T Resistance Measurement encompassing Identification of instruments used in the field to measure resistance including insulation resistance and the typical circumstances in which they are used the purpose of an Insulation Resistance IR Tester the parts and functions of various analogue and digital IR Tester selector range switch zero ohms adjustment battery check function scale and connecting leads reasons why the supply must be isolated prior to using the IR tester where and why the continuity test would be used in an ESI systems where and why the insulation resistance test would be used in an ESI system the voltage ranges of an IR tester and where each range may be used eg V dc V dc amp V dc the ASNZS Wiring Rules requirements continuity test and insulation resistance test the purpose of regular IR tester calibration the correct methods of storing the IR tester after use carry out a calibration check on a IR Tester measurement of low values of resistance using an IR tester continuity functions measurement of high values of resistance using an IR tester insulation resistance function the voltammeter short shunt and long shunt methods of measuring resistance calculation of resistance values using voltmeter and ammeter reading long and short shunt connections measurement of resistance using voltammeter methods T Capacitors and Capacitance encompassing basic construction of standard capacitor highlighting the plates dielectric and connecting leads different types of dielectric material and each dielectrics relative permittivity identification of various types of capacitors commonly used in the ESI industry Fixed value capacitors Stacked plate Rolled Electrolytic Ceramic Mica and Variable value capacitors tuning and trimmer circuit symbol of various types of capacitors standard variable trimmer and polarised terms Capacitance C Electric charge Q and Energy W unit of Capacitance Farad Electric charge Coulomb and Energy Joule factors affecting capacitance the effective area of the plates the distance between the plates and the type of dielectric and explain how these factors are present in all circuits to some extent how a capacitor is charged in a dc circuit behaviour of a series dc circuit containing resistance and capacitance components charge and discharge curves the term Time Constant and its relationship to the charging and discharging of a capacitor calculation of quantities from given information Capacitance Q VC Energy W CV Voltage V QC connection of a series dc circuit containing capacitance and resistor to determine the time constant of the circuit T Handling and testing capacitors encompassing hazards involved in working with capacitance effects and the safety control measures that should be taken safe handling and the correct methods of discharging various size capacitors dangers of a charged capacitor and the consequences of discharging a capacitor through a person effects of capacitors connected in parallel effects on the total capacitance of capacitors connected in series common faults in capacitors testing of capacitors to determine serviceability application of capacitors in the ESI industry T Magnetism encompassing magnetic field pattern of bar and horseshoe magnets magnets attraction and repulsion when brought in contact with each other common magnetic and nonmagnetic materials and groupings diamagnetic paramagnetic and ferromagnetic materials principle of magnetic screening shielding and its applications practical applications of magnets T Electromagnetism encompassing conventions representing direction of current flow in a conductor magnetic field pattern around a single conductor and two adjacent conductors carrying current Using the right hand rule to determine the direction of magnetic field around a current carrying conductor direction of force between adjacent current carrying conductors effect of current length and distance apart on the force between conductors including forces on bus bars during fault conditions magnetic field around an electromagnet Using the right hand rule to determine the direction of magnetic field around a current carrying coil magnetomotive force mmf and its relationship to the number of turns in a coil and the current flowing in the coil practical applications of electromagnets T Electromagnetic induction encompassing principle of electromagnetic induction Faradays law of electromagnetic induction applying Flemings right hand rule to a current a carrying conductor under the influence of a magnetic field calculation of induced emf in a conductor given the conductor length flux density and velocity of the conductor calculation of induced emf in a coil given the number of turns in a coil and the rate of change of flux calculation of force on a conductor given the flux density of the magnetic field length of the conductor and the current being carried by the conductor Lenzs law applications of electromagnetic induction T Inductance encompassing construction of an inductor including a bifilar winding inductor Australian Standard circuit diagram symbol for the four types of inductor effect of physical parameters on the inductance of an inductor common types of inductor cores applications of the different types of inductors definition of terms self induction inductance and mutual inductance calculation of value of self induced emf in a coil mutual induction occurs between two coils practical applications for the effects of self and mutual induction undesirable effects of self and mutual induction T Magnetic devices encompassing construction operation and applications of relays construction operation and applications of contactors magnetic methods used to extinguish the arc between opening contacts construction operation and applications of Hall Effect devices construction operation and application of magnetic sensing devices |