COMPETENCE - metc instructors collab site



BACHELOR OF SCIENCE IN MARINE ENGINEERINGCOURSE SPECIFICATIONSElectro Technology IITable A-III/1 and Table III/2 Function: Electrical, Electronic and Control EngineeringSTCW’78 as amendedIssue Date:January 2014Revision Status:00Prepared by:Reviewed by:Approved by:Number of pages:12REVISION HISTORY COURSE SPECIFICATIONSNO.DATEREVISIONCOMPETENCEKNOWLEDGE, UNDERSTANDING AND PROFICIENCYPERFORMANCEAPPROXHOURSOperate electrical, electronic and control systemsOperate electrical, electronic and control systems (Cont)Operate electrical, electronic and control systems (Cont)Operate electrical, electronic and control systems (Cont)Operate electrical, electronic and control systems (Cont)Operate electrical, electronic and control systems (Cont)Operate electrical, electronic and control systems (Cont)Operate electrical, electronic and control systems (Cont)Manage operation of electrical and electronic control equipment (ML)Manage operation of electrical and electronic control equipment (ML) (Cont)Maintenance and repair of electrical and electronic equipmentMaintenance and repair of electrical and electronic equipment (Cont)Basic electrical engineeringBasic electrical engineering (Cont)Basic electrical engineering (Cont)Basic electrical engineering (Cont)Basic electrical engineering (Cont)Basic electrical engineering (Cont)Basic electrical engineering (Cont)Marine Electro-technologyDesign features and system configurations of operational control equipment for electrical motorsDesign features and system configurations of operational control equipment for electrical motors (Cont)The interpretation of electrical and simple electronic diagramsThe interpretation of electrical and simple electronic diagrams (Cont)GeneratorsA.C. GeneratorsUses Fleming's hand rules to determine the directions of magnetic field, motion and currentOn an actual machine, or by using a given diagram that shows the arrangement of a simple generator, identifies and explains the function of:–the armature–slip rings–brushes and springs–field poles–field coilsSketches a graph showing the variation of e.m.f. when a simple loop generator coil is rotated between two polesStates the range of voltage and frequency at which ships' electrical power is generatedStates that the A.C. voltages normally given are root mean square values and that all equipment is rated in these termsStates that peak values are 2 times larger than r.m.s. valuesDescribes in simple terms an A.C. generator with three-phase windings, stating the phase differenceSketches a schematic arrangement of a three-phase alternator with star connectionIn the terminal box of a stator field winding, identifies the outlets of the three phases and the common neutral connectionExplains how excitation of the rotor is produced and suppliedDescribes how a generator is cooledLists the parts of a generator fitted with temperature alarmsExplains why heaters are fitted to a generatorExplains the function of an automatic voltage regulatorSketches a block diagram of an automatic voltage regulator, naming the main components and explaining the purpose of the hand trimmerExplains such sources of supply can be run in parallel and those which cannotPerforms or describes the synchronizing sequence to bring a generator into service in parallel with a running generator, using both a synchroscope and lampsAdjusts, or describes how to adjust, the load sharing of two generators running in parallelEither performs the procedure, or describes how, to reduce the load on a generator and takes it out of serviceStates that load sharing can be automatically controlledStates that the emergency generator feeds its own switchboard and that both are usually installed in the same compartment above the waterlineDescribes the connections between the emergency and main switchboards and the necessary safeguardsDescribes the situation where the emergency generator would be started up automatically and the methods of startingDescribes the regular "no load" running and the occasional "on load" running of the emergency generatorD.C GeneratorsSketches, in diagrammatic form, the basic circuit for a D.C. generatorOn a given drawing or an actual generator, identifies the field poles, yoke, shoe, field windings and interpolesDescribes the differences in appearance of shunt coils and series coilsOn a given drawing or an actual generator, identifies the windings, commutator, commutator insulation, laminations, clamping arrangement, ventilation holes, coil-retaining arrangements, brushes, tails, brush loading arrangement and bearingsNames the two types of winding used on armaturesOn an actual machine or by using a given diagram that shows the arrangement of a simple direct-current generator, identifies and explains the function of:–the armature–the commutator–brushes and springs–field poles–field coilsPower Distribution SystemsDistributionExplains the basic purposes of switches, circuit breakers and fusesDescribes briefly the principle of the various types of closing mechanism of circuit breakersLists the ways in which a circuit breaker can be trippedExplains the purpose of interlocks fitted to circuit breakersLists the essential services which are supplied by electrical powerExplains the purpose of an emergency power supplyStates the possible sources of emergency power supply and how they are brought into useDraws a system diagram of a typical distribution system, showing:–main generators–emergency generators–shore supply–battery charging–440 volt supply–220 volt supply–circuit breakers–transformersBy means of simple sketches, shows the difference between insulated systems and earthed-neutral systemsInsulationExplains what is meant by an insulator and the purpose of insulationDescribes leakage in an insulated cableExplains why the insulation resistance of large installations is normally relatively lower than those of small installationsDescribes the factors which affect the value of insulation resistanceExplains why the current-carrying capacity of a machine is governed by its insulationDescribes what is meant by insulation resistance and explains how it often deterioratesDescribes the materials and general physical characteristics of insulation materials and the factors and conditions which cause deteriorationStates the maximum temperature which common insulation materials can withstand and the maximum ambient air temperature used in designExplains why the ventilation and cooling of insulation is essentialTransformersStates that transformers on ships are usually air-cooledShows diagrammatically the connections between the main switchboard and the main distribution board through:–delta-delta transformers–delta-star transformers–delta-star transformers with an earthed neutralDescribes the procedure when connecting up to a shore supplyElectrical MotorsA.C. motorsStates the normal supply for three-phase induction motorsNames the types of motor commonly used on board ships, giving their applicationsGiven the actual components from a three-phase induction motor, identifies:–rotor–bearings–fan –stator–field windings –rotor cage–method of lubrication–terminalsExplains the differences between the following motor enclosure, describing how cooling is achieved in each case:–drip-proof–totally enclosed –deck watertight–flameproofSketches a graph showing the relationship between speed and load and between current and load, from no load to full loadGiven a motor name plate, explains the meaning of all of the information displayedExplains in simple terms how the driving torque is produced in an induction motorExplains why slip is essentialD.C. motorExplains what is meant by the back e.m.f. (Eb) of a motorRelates the supply voltage to the back e.m.f. and to the voltage drop in the armatureV = Eb + IaRaExplains why the starting current is high compared to the load currentExplains why a starter is required and the principle involvedStates that rotational speed (N) is approximately proportional to:–applied voltage / field flux or N α V/ΦFrom the above objective, explains how the rotational speed is affected by:–varying the voltage–varying the strength of the magnetic fieldDescribes typical applications of:–shunt motors–series motorsIn compound motors, explains what is meant by:–long shunt–short shunt–cumulatively connectedElectrical Motor Starting MethodologiesExplains the following starting methods for D.C. motors and its characteristics:–starting rheostat–automatic starterExplains the following starting methods for A.C. motors and its characteristics:–direct on line starting–star-delta starting–compensator startingStates what should be taken into consideration when selecting starting methods for A.C. motorsExplains the basic reason for the provision of motor protectionExplains the principles of the most common over current relaysExplains the difference between the largest possible overload current and a fault currentDescribes the function of the over-current trip, time delays and fuses with both overload and fault currentsExplains the basis upon which fuses are chosenExplains the principle of a thermal relay, including the means of its adjustmentExplains what is meant by single phasing and its effect on a motor:–when running –when starting–if continued attempts to start are madeDescribes in principle the protection against running with a phase open circuitedExplains why under voltage trips are necessaryStates applications where the following speeds are suitable:–single fixed speed–two or three fixed speeds–infinitely variable speedDescribes briefly how stepped speeds can be providedLists the means of producing variable speedDescribes the principle of the Ward-Leonard driveExplains the principle of a variable-frequency motorHigh-Voltage InstallationsStates that more than 1,000 V is usually called high-voltageStates how and why high-voltage installations are used on board shipsStates what voltages are mostly used as high voltage on board shipsDescribes equipment/installations in high-voltage systems such as high-voltage generator, distribution board, motors etc.States the special characteristics and features of high-voltage installations in comparison with less than 1,000 VStates that high-voltage systems are normally earthed via a resistorExplains how the presence of earth faults is indicated in a high-voltage system with an earthed neutralStates safety precautions to be strictly observed to prevent accidents when working on high-voltage electrical equipmentStates that any operation of high-voltage installations must be carried out remotely at places where a certain distance is being kept from the installationsDiscusses the following in terms of electrical practice in shipsMaterials of conductors - single wire and multi-strandedCommonly used insulation materialEffect of temperature, oxidation, fire, oil, seawater, acids and solvents on insulation materialsSheathing of electric cablesCable runs in machinery spaces, cargo holds and cold-storage chambersPassing of cables through bulkheads and decks o Deck MachineryFail safe brakeCoil operated brakeDeck winches and capstans, windlass and deck cranes o Electrical InterferenceEquipment susceptible to electric interference o Common sources of interferenceMethod of suppression of interferenceThree Phase A.C. MotorsConstruction, principle of operation of 3-phase induction motorsDesign features of star and delta motorsStarting, speed controlling and braking methods of 3-phase induction motorsLoad-torque characteristics and protectionThree Phase Synchronous MotorsConstruction. Principle of operation. Load characteristicsPower factor improvement with synchronous motorsMotor control and protectionD. C. motorsC. motorsDistributionMain switchboard construction and configurationShort circuit protection - fuses, main circuit breakersThe generator air circuit breakerProtection co-ordinationDistribution configurationElectrical equipment for tankers and hazardous areas and safety systemsEmergency PowerAutomatic starting arrangements for the emergency generatorEmergency power requirementsEssential and non essential circuitsBatteriesExplains major electrical and electronic symbols used in their circuit diagramsDescribes the function of circuit elements presented by the symbols in their circuit diagramExplains briefly the flow of electrical/electronic current and functions of their circuit diagrams taking simple circuits containing major electrical/electronic symbols as examplesExplains the basic differences between the following electrical diagrams:–block diagram–system diagram–circuit diagram–wiring diagramUsing a given simple wiring diagram, sketches a circuit diagramFrom given simple circuit or wiring diagrams, sketches schematic or system diagrams, using correct letter and circuit symbolsUses the diagrams named in the above objective30 Hours15 Hours20 Hours10 Hours5 Hours10 Hours6 Hours4 Hours3 Hours4 Hours3 Hours5 Hours ................
................

In order to avoid copyright disputes, this page is only a partial summary.

Google Online Preview   Download