The Assistant Electro Technical is responsible for the maintenance and repair of the electrical plant and associated electrical systems as designated by the Chief Electro Technical Officer a... Read more
Marine electricians are responsible for installing and maintaining electrical systems and/or equipment on ships and boats. They typically work at sea or in docks and ports and must be able t... Read more
The main advantages are: No special attention for equipment insulation required – Automatic detection and immediate isolation of ground faults – Ground fault current flows for... Read more
The main advantages of Insulated neutral ship’s system are: – Continuity of service on a ground fault – Ground fault currents can be kept low The main disadvantages of In... Read more
Ever since AC generation and distribution has been introduced on a large scale on ships around 1950, there has been debate about the type of distribution system. The main focus with the type... Read more
Naturally, all lamps are designed to produce their rated luminous output at their rated voltage. An overvoltage on an incandescent lamp produces a brighter and whiter light because the filam... Read more
Induction motors are fitted with ball and or roller bearings. These bearings are robust and reliable and should give very little trouble provided they are properly fitted, kept absolutely cl... Read more
Look at the stator windings for damaged insulation caused by careless replacement of the rotor into the stator. Discoloured insulation is an indication that the winding has been overheated.... Read more
There are three types of overcurrent relay (OCR) used for motor protection: Electronic Thermal Electromagnetic Electronic OCIT (overcurrent inverse time) relays have largely superseded elect... Read more
Protecting an electric motor basically involves preventing the motor from getting too hot. Remember, every 10*C above the maximum recommended temperature of the insulation can reduce its wor... Read more
