Intermittent Faults on ship electrical system When ships Electrical Engineer ETO need find and diagnose intermittent faults, where a short, open, or other problem occurs only tempo... Read more
During navigation in rough seas, the main engine tripped as a result of the actuation of themain engine overspeed trip induced by racing. After resetting it, crew members made atte... Read more
The ship requires a large mechanical power for propulsion and a small electrical power for service loads. From the mechanical and electrical power systems point of view, ships are... 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 concept of electric propulsion is not new, the idea originated more than 100 years ago. However, with the possibility to control electrical motors with variable speed in a larg... 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
For the measurement of temperatures, there are three basic types of electrical thermometers. 1. Resistance thermometers operate on the principle that the resistance of a metal vari... Read more
Power factor is the ratio of the true power (voltamperes) to apparent power (watts), and it depends on the phase difference between current and voltage. Three-phase power factor me... Read more
To successfully carry out the various test procedures suggested in this manual, certain test instruments are essential. The following lists detail the basic requirements in this re... Read more
