Latching relays allow the circuit to be controlled by using a single pulse to the relay control circuit and are used when a relay is required to maintain its position if the power... Read more
The relay is an electro-mechanical switch, consisting of a coil, an armature, and contacts. A current passes through the coil creating a magnetic field that attracts the armature,... Read more
Coils are used in a variety of electromagnetic starters, relays and contactors. Letters are used to Identify the coil. For example, -KM would indicate a motor starter while -K indi... 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
Any ship electrical drawing representing an ship electrical installation or ship circuit uses specific symbols to represent the various ship electrical devices in shorthand. This p... Read more
It is very important that electrical devices in a circuit are connected accurately by using cables with the correct voltage and polarity. To ensure cables are connected correctly t... Read more
Grouped cables are reduced to single lines for convenience and then continued in a normal or crossed arrangement. The sample illustrates cable DSE-55, shown by a heavy line, which... Read more
Even through electrical systems may vary in complexity from yacht to yacht, there are conditions that can occur in any electrical system that will almost always lead to dangerous c... Read more
Responsibilities of IT Tehnician on Cruise ship: Maintain inventory of all software and computer, printer, and network hardware with serial numbers and record of ownership Assist s... 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
