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MV1403 MARINE ELECTRICAL TECHNOLOGY
Posted Date: 26 Apr 2008 Resource Type: Articles/Knowledge Sharing Category: Syllabus
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Posted By: Nithya Krishna Member Level: Gold
Rating:  Points: 5
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MV1403 MARINE ELECTRICAL TECHNOLOGY
UNIT I POWER DISTRIBUTION AND REGULATIONS
The marine environment – effects of inclination – Generators – Power supply commonly available – main switchboard – motor controls – emergency services – emergency stop panel – ships auxillary services – load analysis – electrical diagrams – inherent dangers and avoidance of disastrous consequences – active and passive safety measures – Do’s and Don’ts – Electric shock – first aid – conditions of shock risk – selection of AC and DC generators for use on ships – merits and demerits – location and Installation of generator sets.
Requirements & Regulations – safe electrical equipments for hazardous areas – American safety standards – common definitions – British and European standards – tanker installations – Installations Ashore – Indian Standards.
Systems of AC distribution – general concept – single, two and three phase systems with 2,3 and 4 wires – power distribution – general Distribution scheme – specific systems for ship’s service – tankers schemes – primary power bus – need for emergency power supply – method of supply – passenger and cargo vessels requirements – shore supply –precautions to be taken while consuming shore supply – arrangement to ensure proper phase supply – remote switches to ventilating fans – fuel pumps – lubricating oil pumps and purifiers.
UNIT II INSTRUMENTATION AND SWITCHGEAR
Insulated & Earthed neutral systems – introduction – circuit faults – causes –prevention – earth fault indicators – detection and clearance – alternators.
AVR: excitation systems – carbon pile regulator – vibrating contact and static automatic regulator – transient voltage dip and alternator response – effect of kW and kVAR Loading.
Panel Instrumentation: Introduction – system terminology – phase sequence indicators.
Paralleling of Alternators: Manual and auto synchronizing – lamps – parallel operation –excitation and throttle control – load sharing – kW, kVAR and Manual.
Switchboards & Switchgear: Main and sub switchboard-Rating and Characteristics of Main switchboards – group starter boards – distribution Fuse boards – bus bars – instrumentation & controls – circuit breakers – alternator CB’s – MCCB’s – miniature CB’s-RCCB’s – arc fault Current Interrupts – fused Isolators – fault protection devices – introduction – over-voltage-surge-transients – ripple – spikes – DC generator protection –alternator and system protection – protection through fuses – protection Discrimination Motor Protection.
UNIT III CABLES AND LIGHTING SYSTEMS
Electrical Cables: Cables- conductors – Wire Sizes-Current Rating – testing-codes-Practical tips.
Insulation – protection and temperature ratings – insulation classes – A, B, E, F,H- Insulation for High temperatures – Insulating Materials – Cable insulation & Sheath – Formation of polymers, classification, Polymerization mechanisms – filters – Cross – linking – Cable gland – Degrees of Protection – Temperature Ratings – Temperature Rise – Determination of hot temperature.
Lighting Systems: Introduction – Incandescent Lamps – Discharge lamps – HCLPMF lamps – High pressure Mercury Fluorescent lamps – High and Low pressure sodium vapour lamps – Lamp caps – Effect of voltage on lamp performance – Navigation & signal lights – Signals for a power driven ship under way (At night) – Emergency lighting – Requirement of lighting of Deck and pump house of oil tankers. Alarm Indication Systems: Fire alarms and Detection – Heat detectors – Smoke detectors – Combustion detectors – Miscellaneous alarm indicator systems – Scanning type system – Sequential starting and cut outs for an automatic fired boiler incorporating safety devices and combustion control equipments – incinerators – Sewage plants – Bilge oil separators.
UNIT IV PROPULSION AND STEERING SYSTEMS
Propulsion Systems: Auxiliary propulsion systems – Layout and Optimizing storage space – Electrical Propulsion – Advantages & Disadvantages DC constant current systems – DC motor supplied from alternators – Turbo – electric propulsion – AC single speed and Induction motor drives – Fixed speed alternators – Cycloconverter device-Diesel Electric propulsion – Thruster and Water jet propulsion.
Steering Systems & Gyrocompasses: Fundamentals – Auto Navy steering Systems – Type P – Electro hydraulic Steering – Control systems-Typical system configuration-Components-Auto Steer-Types, Structure – Gyroscopes – Compass Considerations. Deck Machinery & Cargo Equipment: Anchor Windlass – Cargo winches – Hydra lift Marine cranes-Maritime GMC A.S.-Hagglunds Drives & H.W. Carlsen AB-Magnetic disc brakes.
Automation of Air Compressors: Selection – Choice of a correct machine-Oil-free and non-oil free air – Instrument air – Air Vs Water cooled- Reciprocating Compressors-Starting & control-Safety protection Equipment – Automatic Operation.
UNIT V AUXILLARIES AND MAINTENANCE
Batteries & Battery charging: Battery supplies – Lead-acid batteries – Electrical Characteristics – Nickel – Cadmium batteries – Sealed Ni-Cd batteries – Battery charging – Charging from AC and DC mains – Standby Emergency batteries – Voltage Regulators – Battery insulation & safety measures – First Aid treatment – Rotary generators.
Gas analysers: Combustible gas indicator – Portable oxygen analyzer – CO2 Analysis – Tank scope – Fixed oxygen Analyser. Miscellaneous Systems: Cathodic protection system-Crankcase oil mist detector – Air drier – Dynic Water purity meter – Salinometer – Electric Tachometer – Rudder position Indicator – Ship’s roll stabilizer – Galley Equipment – Laundry Equipment – Refrigerating Machinery – Temperature monitoring for R & AC systems.
Maintenance & Troubleshooting: Introduction – Planned Preventive Maintenance – Life, Breakdown and Condition maintenance, Troubleshooting, Maintenance of specific equipments – Recommended list of spares, tools & Accessories.
TEXT BOOKS
1. BOWIC C.T., Marine Electrical Practice, 5th Edition, “Butter Worthy”, London, 1981.
2. LAW S.W., “Electricity applied to Marine Engineering”, 4th Edition, “The Institute of Marine Engineers”, London, 1998.
REFERENCES
1. Elstan.A. Fernandez., “Marine Electrical Technology”, 1st Edition, “Sterling Book House”, Mumbai, 2002.
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