There are two basic types of pushbuttons on ship electrical system which are momentary and maintained. A normally open momentary pushbutton (S1,S2) only remains closed while the bu... Read more
Similar to contact symbols, switch symbols Identify open or closed paths of current flow with variations of the symbol representing: As with contacts, switches require a device or... Read more
Reverse Power Relay is a directional protective relay that prevents/protect the generator from motoring effect (going to reverse direction). It is used where generator runs in para... Read more
As circuit design becomes increasingly complex and high-speed, how to ensure the integrity of various signals (especially high-speed signals), that is, to ensure signal quality,has... 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... 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 disadvant... 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 wit... Read more
The performance of electric lamps will deteriorate with time. Eventually they fail and the lamps must be replaced. Simple lamp replacement becomes the most obvious maintenance task... 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... Read more
The inductive voltage regulator is a sort of an electric machine where the output voltage may be different from zero to a particular maximum value depending on the proportion of tu... Read more
