Installing a submarine transmission cable is a costly and challenging activity. The lifetime of a submarine cable might be tens of years and the technical interventions for its repairing in… Read more
Sep 11, 2017 | Energy and Power
This technical article discusses two important circuit breaker classifications – by voltage level (from low to medium and high voltage) and secondly by technology (extinguishing method or medium that insulates… Read more
Sep 06, 2017 | High Voltage
System intertie transformers connect extra high voltage (EHV) transmission systems with different voltages up to 800kV together with the purpose that active as well as reactive power can be exchanged… Read more
Sep 04, 2017 | High Voltage
Although in general, the calculation of the reactive power to be installed is initially carried out globally, it is advisable not to be swayed by the apparent simplicity of this… Read more
Aug 30, 2017 | Electric Motor
Distribution circuits come in many different configurations and circuit lengths. Most share many common characteristics. Figure 1 shows a typical distribution circuit, and Table 1 shows typical parameters of a… Read more
Aug 28, 2017 | Transmission and Distribution
Transfer switches support multiple operation modes (manual, automatic, non-automatic, bypass isolation, etc.) and feature a range of different switching mechanisms (contactors, circuit breakers). Transfer switches are used to protect critical… Read more
Aug 23, 2017 | Energy and Power
Protection of persons and livestock against electric shock is a fundamental principle in the design of electrical installations in accordance with BS 7671: Requirements for Electrical Installations, commonly known as… Read more
Aug 21, 2017 | Protection
Many types of power generating plants are in use and possible for the future, including steam plants fueled by coal, oil, or gas, nuclear plants, hydro plants and plants which… Read more
Aug 18, 2017 | Energy Generation
Normally residual current devices (RCDs) are used for protection against direct and indirect contacts. An RCD can detect low leakage currents that could flow through the body of a person…. Read more
Aug 16, 2017 | Energy and Power
Magnetic voltage transformers are used to provide a secondary signal that is proportional to the actual prevailing primary value. These signals are used to supply measuring instruments, meters, relays and… Read more
Aug 14, 2017 | Energy and Power
