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
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
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
When equipment is regularly inspected and maintained according to a manufacturer’s timetable and described procedures that specify the actual work to be done to prevent equipment f... Read more
This is when equipment is left untouched until a breakdown occurs. At this time, the equipment is repaired or replaced and any other specified maintenance procedure carried out. Th... Read more
Power currents (AC) can be measured simply by using a clampmeter that acts as a current transformer. The instrument’s tongs are clipped round a single insulated conductor and the c... Read more
Ship Electric motor control, cabinet design requires specifying the following: 1. The continuous and sustained short-circuit amperes that the bus mustwithstand without thermal and... Read more
Like all motors, the induction motor starting directly at full line voltage draws high inrush current several times greater than the normal rated current. Ship electrical motors hi... Read more
The induction motor has been a reliable workhorse of the industry ever since it was invented by Nikola Tesla in 1888. It is the most widely used motor because of its simple, brushl... Read more
How ship electrical equipments are protected and categorized to operate in an area with high concentrations of flammable gases, vapors or liquids? Ship EX Areas protection, Intrins... Read more
