Marine electrical distribution system and control engineering

IT IS THE ALLAH WHO SUBJECTED IT IS THE ALLAH WHO SUBJECTED THE SEA TO YOU.THAT SHIP MAY SAIL THE SEA TO YOU.THAT SHIP MAY SAIL THROUGH IT BY HIS COMMAND ,THAT THROUGH IT BY HIS COMMAND ,THAT

YE MAY SEEK OF HIS BOUNTY,AND YE MAY SEEK OF HIS BOUNTY,AND THAT YE MAY BE GRATEFUL THAT YE MAY BE GRATEFUL

(Al-Quran Surat Jasiya 45: R12)(Al-Quran Surat Jasiya 45: R12)

Pakistan National Shipping Pakistan National Shipping CorporationCorporation

Marine Engineer ApprenticeMarine Engineer Apprentice

Marine Electrical Distribution Marine Electrical Distribution SystemSystem

Marine Electrical Distribution Marine Electrical Distribution SystemSystem

Insulated Distribution SystemInsulated Distribution System Earthed Distribution SystemEarthed Distribution System

22ndnd Earth Fault Earth Fault

3 Phase 4 Wire3 Phase 4 Wire

One Line diagramOne Line diagram

Basic design criteria furtherBasic design criteria further

Balance and Unbalanced Load Balance and Unbalanced Load CalculationCalculation

Generator PartsGenerator Parts

Marine HV CableMarine HV Cable

PNSC Electrical workPNSC Electrical workCode ListCode List

l1 repairs to electrical machinery such as l1 repairs to electrical machinery such as motors, generators, switchboard etcmotors, generators, switchboard etc

l2 repairs to deck machinery (electrical)l2 repairs to deck machinery (electrical) l3 repairs to equipmentl3 repairs to equipment l4 repair to instrumentsl4 repair to instruments l5 spare parts required to be manufacturel5 spare parts required to be manufacture l6 damage repairsl6 damage repairs

ShortCircuit and Earth Meter ShortCircuit and Earth Meter ReadingReading

FAT, SAT and HATFAT, SAT and HAT

Contactor and BreakerContactor and Breaker

SwitchboardSwitchboard

Star Delta Starter for Star Delta Starter for Compressor MotorCompressor Motor

Lightening DistributionLightening Distribution

Do Some Power Do Some Power Calculation ?Calculation ?

Series CircuitSeries Circuit

Parallel CircuitParallel Circuit

Control EngineeringControl Engineering

Cotrol EngineeringCotrol Engineering

PLC (Programmable PLC (Programmable Logic Controller)Logic Controller)

DCS DCS

Environmental ProctectionEnvironmental Proctection

Where IP means Insulation Protection

Electrical and Electronic ShopElectrical and Electronic Shop Overhauling, dismantling and assembling AC motorsOverhauling, dismantling and assembling AC motors Overhauling, dismantling and assembling DC motorsOverhauling, dismantling and assembling DC motors Generators of floating craftGenerators of floating craft Besides you can also learn about the followingsBesides you can also learn about the followings

Magnetic contactorMagnetic contactor Solenoid valveSolenoid valve Limit switch Limit switch Pressure switchesPressure switches Level sensorLevel sensor ThermostatThermostat Electro-pneumatic transducerElectro-pneumatic transducer Float switchFloat switch Star and delta motor starterStar and delta motor starter Wiring of generator Wiring of generator Power distribution in shipPower distribution in ship Fluorescent tube light Fluorescent tube light Mercury lamp, Halogen lamp, Sodium lamp and it ballast Mercury lamp, Halogen lamp, Sodium lamp and it ballast

ContactorContactor

Limit SwitchLimit Switch

Float SwitchFloat Switch

Solenoid ValveSolenoid Valve

On Boiler MT SWAT

Printed Circuit Board (PCB)Printed Circuit Board (PCB)

Bimetal Thermal OverloadBimetal Thermal Overload

Push Button and Selector Push Button and Selector SwitchSwitch

Push ButtonPush Button Selector SwitchSelector Switch

ThermostatThermostat

Check the point of contactCheck the point of contact Check the electrical connCheck the electrical conn

Electroinc time and Selector Electroinc time and Selector SwitchSwitch

Checking the meggar of Three Checking the meggar of Three phase motorphase motor

Fluorescent Tube CircuitFluorescent Tube Circuit

Relay and SoleniodRelay and Soleniod

CAPAC and MGPSCAPAC and MGPS

Engine RoomEngine Room

Author IntroductionAuthor Introduction

ZEESHAN AHMEDZEESHAN AHMED, Marine Engineer, Marine Engineer. After doing FSc(pre-engineering) . After doing FSc(pre-engineering) from PAF(fazaia) intermediatefrom PAF(fazaia) intermediate college Lahore cantt. I joinedcollege Lahore cantt. I joined Pakistan Marine Academy andPakistan Marine Academy and choose Marine engineering branch. choose Marine engineering branch. Two years of training at academyTwo years of training at academy (practical + theoretical) (practical + theoretical) we learned a lot of thing like CNC we learned a lot of thing like CNC (computerize numeric code), trained (computerize numeric code), trained on various models (like control valve, solenoid valve, flow meter, refrigeration system, on various models (like control valve, solenoid valve, flow meter, refrigeration system,

CPP propeller, Main engine model (TWO stroke), Boiler model (water tube) CPP propeller, Main engine model (TWO stroke), Boiler model (water tube) ……………………………….. in GEK (general engineering knowledge) lab, ……………………………….. in GEK (general engineering knowledge) lab, Mechanical and physics lab, Engineering workshop. ETC . After two years, we joined Mechanical and physics lab, Engineering workshop. ETC . After two years, we joined PNSC workshop for the training of ONE year Industrial training. That was also the PNSC workshop for the training of ONE year Industrial training. That was also the golden time where we learnt a lot of things at different shops as well as onboard golden time where we learnt a lot of things at different shops as well as onboard (repairing and watch keeping). I learn many thing on tanker E.g. MT Johar (learn how (repairing and watch keeping). I learn many thing on tanker E.g. MT Johar (learn how to dismantle turbine rotor from casing and what are the precautionary measurement to dismantle turbine rotor from casing and what are the precautionary measurement while working on turbine, learn how to change the diaphragm(stationary blade) Plate while working on turbine, learn how to change the diaphragm(stationary blade) Plate type heat exchanger gasket change, shell and tube Cooler Anode replacement and type heat exchanger gasket change, shell and tube Cooler Anode replacement and (Cont.)(Cont.)

Introduction (cont.)Introduction (cont.)

cleaning of SALT WATER tubes etc.) , MT Swat (major thing which I learn in Swat is how cleaning of SALT WATER tubes etc.) , MT Swat (major thing which I learn in Swat is how to dismantle head of main unit and copper gasket replacement with a minor facing defect to dismantle head of main unit and copper gasket replacement with a minor facing defect which is found during overhauling which is filled and faced by Belzona) , MT which is found during overhauling which is filled and faced by Belzona) , MT Lahore(About the DEAD MAN ALARM, Alpha lubricator for Cylinder Main Engine Unit, Lahore(About the DEAD MAN ALARM, Alpha lubricator for Cylinder Main Engine Unit, Pump operation and watch keeping), MT Quetta(Auto load sharing of Generator Set, MT Pump operation and watch keeping), MT Quetta(Auto load sharing of Generator Set, MT Karachi (Dry washing of the main engine turbocharger with granules, water washing of IG Karachi (Dry washing of the main engine turbocharger with granules, water washing of IG Fan of Inert Gas system, sludge removal of from purifier(centrifuge) etc., . One thing I Fan of Inert Gas system, sludge removal of from purifier(centrifuge) etc., . One thing I want to added is that the trend in ship building is more toward based on electronic and want to added is that the trend in ship building is more toward based on electronic and electrical application. So a marine engineer must strong in automation, instrumentation electrical application. So a marine engineer must strong in automation, instrumentation and control system. PLC (programmable and logic control) and SCADA (supervisory and control system. PLC (programmable and logic control) and SCADA (supervisory central access and data acquisition) are the upcoming technology that are using on central access and data acquisition) are the upcoming technology that are using on modern ship. The latest engine of MAN B&W is based on Camless technology. Chain is modern ship. The latest engine of MAN B&W is based on Camless technology. Chain is removed ; fuel pump and exhaust valve actuation is control by hydraulic servo(lub) oil removed ; fuel pump and exhaust valve actuation is control by hydraulic servo(lub) oil which is driven by Axial piston pump mounted on the Fly wheel.which is driven by Axial piston pump mounted on the Fly wheel.

Regards,Regards,

Z.A.Z.A.

Author contact informationAuthor contact information

zeetec4@yahoo/gmail/hotmail.comzeetec4@yahoo/gmail/hotmail.com

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Website: zeetec4.googlepages.comWebsite: zeetec4.googlepages.com

Any question and suggestion are welcomeAny question and suggestion are welcome