All electrical circuits on ships are required to be identified in applicable documents and on equipment labels, such as nameplates and cable tags, with a designation prefix.Some se... Read more
The power system is configured with equipment in series. In a long chain of equipment, system efficiency and reliability both suffer in the following way. System efficiency = Multi... Read more
Connecting the ship to the shore-side power source in-port with the ship’s machinery shut down. Availability of fast plug connections and seamless load transfer without blackout al... Read more
In a balanced 3-phase system, the magnitudes of line voltage VL, line current IL, and 3-phase power in terms of the magnitudes of phase voltage Vph and phase current Iph are derive... Read more
Find and Correct the Cause of Trouble After any electrical failure on ship has been corrected by Electrotechnical Officer (ETO), be sure to locate and correct the cause so the same... Read more
The fuse is a piece of wire which can carry a stated current; if the current rises above this value it will melt. If the fuse melts (blows) then there is an open circuit and no cur... Read more
ABS – American Bureau of ShippingIEC – International ElectrocommissionIEEE – Institute of Electrical and Electronics EngineersNEC – National Electrical Code... Read more
Electronic “hardware” consists of passive and active components which in an intelligent way are coupled together in order to perform a certain task. The basic elements of electroni... Read more
Hand-held test meters should never be connected to any electrical equipment or system operating at a voltage that exceeds the meter’s rating. While this is an important safety prec... Read more
The megohmmeter (commonly called a megger in the field) is used to measure the resistance of insulation in megohms (thousands of ohms). Test results indicate the presence of... Read more
