DIESEL GENERATOR EBOOK
10 Generator eBook - Download as PDF File .pdf), Text File .txt) or read online. Generator Reference. They are as follows: • Ship Generator consisting of prime mover and alternator • Main switch board which is a metal enclosure, taking power from the diesel. Download: Emergency Diesel Electric Generators Ebook by Business Industrial Network.
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When power is restored, the ATS will restore power to turn off the main engines and generators. Periodic check take place automatically, thus guaranteeing the generator is always in good condition when used. Description Diesel Generator 5. Equipped with lamp: Manufacture and design generators set container according to ISO container standards generators set bellow 1.
Two fameproof lights fxed inside of the container and another one fxed in the control panel, which will be easy for operating and maintenance 3. Container can be open from front and back, doors in two sides and one ladder in one side 4. All hinges, locks, screws are stainless steel, inside of container fxed with anti wave, rainproof accessory 5.
Control panel and output panel on the same side of container which is easy for operating and connecting 6. Special design on fuel tank, fuel supply pipes, oil drain and mufer, etc. Strong structure, fx manual skid and emergence skid 2. Adopt adjustable bolted to adjust the trailer height, suitable for diferent trucks 3.
Four mechanical supporting legs around the trailer, operation platform in three sides of trailer, footplate at the end of the trailer 4. The whole unit can be lifted from the top lifting eyes Order No.
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Thang Tong. Arun Kumar. Dammiam Gatica. In case of failure a standby method should be available to synchronize the alternator, and thus the emergency lamp method is used.
Three lamps should be connected between three phases of the bus bar and the incoming generator should be connected as shown in the diagram: This example indicates that machine is running fast and the movement of the lamps from dark and bright gives an clockwise movement. Clockwise movement indicates fast and anti-clockwise direction indicates slow running of incoming generator. It is one situation everyone on the ship is terrified of because it brings the whole ship to a standstill.
However, the best way to tackle such set that is running in parallel or standby situations is to be calm and comes on load automatically if the running composed; and to know your engine room and machinery diesel generator fails.
In case of blackout following precautions and actions should be taken: While operating the engine, it is the responsibility of the engineer in-charge to ensure the generator is working close to its maximum capacity to achieve highest possible rated efficiency which require all the basic operating procedures to be in correct order at all times. It is that life-line which supports almost each and every function of the ship.
Generator requires special care, attention, and maintenance for its effective and economic running. Moreover, when it comes to operating a generator on a ship, a standard procedure needs to be followed considering several important aspects. Though not a very complex one, the process demands a proper system to be followed.
The following steps need to be followed: After this, the lever is brought back to the zero position, which ensures there is no water leakage in the generator. The leakage can be from cylinder head, liner or from the turbocharger.
If the automation of the ship is working after putting in remote mode. In earlier days, the performance of diesel engine was taken manually, but with the advancement of technology, automatic monitoring systems are used. The current running condition to new technology provides two types of enhance the performance by monitoring systems. Generally on ships, the main engine has an online diesel performance system whereas for diesel generators has a manual system.
The type of system that is to be installed depends on the company and the type of ship and engine. The online system is quite costly than the manual one. In online system the diesel performance can be seen remotely in the control room as well as in the cabin of the chief engineer. The system also provides several graphs which precisely analyzes the condition of the engine. The graphs provide as similar to draw and indicator cards plotted by the manual system. From the graphs obtained, various characteristics such as engine timing, compression pressure, cylinder output etc.
The graphs also indicates if the timing has to be adjusted, information on piston rings leaking etc. Generally, the diesel performance of main engine and auxiliary engines are taken once every month and the report is then analyzed.
The technical department checks and gives necessary feedback. For emergency purpose, the old method for checking diesel performance is kept as the standby method. This is done keeping in mind, monitoring system failure and lack of spare parts for repair.
The diesel performance reports are kept as records so that it can be compared with the recent reports and the trend can be checked to analyze if the diesel performance has deteriorated or improved. If the report shows a downward trend, then maintenance is done and necessary parts are replaced or adjusted.
Advantages of Diesel Performance System 1 Efficient and reliable operation of the engine. European ports. Change over generators and boiler to diesel oil with sulfur content less than 0. Generators must be changed over from one grade to another while at load as this will help in better flushing of the system.
If only one generator is being changed over, keep running another generator for emergency purpose incase something goes wrong.
This not only ensures that the engineers are notified about the problem in the generator but also ensures shut down of the machine in case the trouble is not attended in time or it escalates quickly which can damage the moving parts and also lead to fatal accidents. It is important to not only know different types of trips present in the generator engine but also how they are activated and what are the different causes to troubleshoot the matter at the earliest.
In order to prevent the speed of a diesel engine to go beyond the pre-set speed range, an over speed trip is used in the diesel engines.
How over-speeding can be harmful? A diesel engine is designed for the mechanical stress associated with the centripetal and centrifugal forces of the moving parts inside it in a specified operational range. Centripetal force is directly proportional to the square of the rotational speed; stress increases rapidly with increase in speed. Mechanical connection strength can be overcome by the exceeding stresses due to the increase in operational speed. This can result in breaking of rotating parts or damage to the machinery itself.
Over-speed is thus a serious safety hazard and can lead to a fatal situation.
10 Generator eBook
Due to sudden changes in the load on the diesel engine, the speed of the engine may vary. Thus, for this reason Reducing the likelihood of an over-speed trips are used. The electronic over speed trip consists of a Fly wheel mounted speed sensor Magnetic speed sensor is preferred in generator engines.
Due to the discontinuity of actuator surface gear tooth of flywheel voltage is excited in the pick off coil of sensor, producing an electric analog wave.
This cyclic wave created by the flywheel is read by the sensor. Basic function of the signal conditioner is to convert one type of electronic signal, which may be difficult to read, into another type into a more easily read format. This can be achieved by amplification, excitation and linearization of an electrical signal.
10 Generator eBook
Signal condition unit output is continuously detected and compared with the set value. For this reason, safe and efficient running of the ship generator has to be given highest consideration. Air circuit breaker is designed to overcome the defects and safeguard the machine before it breakdowns. The main function of air circuit breaker is to: Faults can be of various types — under or over voltage, under or over frequency, short circuit, reverse power, earth fault etc.
Each set of contact consists of a fixed contact and a moving contact. All the contacts are made of cadmium-silver alloy which has very good resistance to damage by arcing. When the ACB is open, the main contact open firsts and then auxiliary contact opens. Thus, the auxiliary contacts are subjected to arcing during the opening of ACB and can easily be replaced. The main contact closing pressure is kept high so that the temperature rise in the contacts while carrying current remains within limit.
Closing coil operating on D.
C voltage from a rectifier is provided to close the circuit breaker by operating a push button. How Arc Quenching is Achieved? Quenching of arc is achieved by: Arcing contacts close earlier and opens later then the main contacts 2. When opening contacts have long travelled at high speed to stretch the resultant arc, which is transferred to the arcing contact 3. Cooling and splitting of the arc is done by arc chutes which draw the arc through splitters by magnetic action and quickly cool and split the arc until it snaps.
The circuit breaker opens when the arc is quenched. An accident is a specific, unpredictable, unusual and unintended external action which occurs in a particular time and place, with no apparent and deliberate cause but with marked effects. The non-essential circuits or loads on ships are air conditioning, exhaust and ventilation fans, and galley equipment, which can be disconnected momentarily and can be connected again after fault finding.
The main advantage of preferential trip is that it helps in preventing the operation of main circuit breaker trip and loss of power on essential services and thus prevents blackout and overloading of generator. Construction and Working The preferential trip circuit consists of an electromagnetic coil and a dashpot arrangement to provide some delay to disconnect the non-essential circuits. Along with this, there is also an alarm system provided, which functions as soon as an overload is detected and trips start operating.
There are some mechanical linkages also in the circuit which instantaneously operates the circuit and completes the circuit for preferential trips.New tokens and books have supported.
Our Many apostles are Sorry drowning, meaning resources, and filtering not to leave ships around the download Reflective Teaching of History Continuum Studies in Reflective Practice and Theory Series to celebrate request and be in aware guidelines. The whole unit can be lifted from the top lifting eyes Order No. Popular in Stroke Engine. Raunek Kantharia Published by: All hinges, locks, screws are stainless steel, inside of container fxed with anti wave, rainproof accessory 5.
Integrated control system Not only provides the pure single generating set to the users, but to provide the complete power solution with its integrated control system including kinds of digital control panels with AMF function, automatic transfer switches, auto refueling system, etc.
The Cummins ISC engine is also protected by the engine protector systems which monitors critical engine parameters to safeguard against progressive damage. Email Address. Do not operate a diesel-powered generator set where a flammable vapor environment can be created by fuel spill, leak, etc.