Electrical engineering and electrical machines - Industrial electric power systems

Electrical engineering and electrical machines - Industrial electric power systems

Reading time: 2 minute Electrotechnics has as object of study the technical applications of electrical and magnetic phenomena. These applications can be: general (such as: electrical measuring devices, electric drive motors, electric lighting installations, electrothermal installations, etc.) or specific to a certain technological process.

Electricity and its applications - The perspective of the '50s

Reading time: 2 minute The book presents the perspective of electricity and its applications, from the '50s. This textbook, which uses as a model of guidance for the theoretical part, the physics textbook written by the Soviet authors A. Bacinski and S. Iliascenko was intended to introduce students of vocational schools in all branches of application of electricity, this field of technique both of special significance for the construction of socialism.

Low and high voltage electrical appliances

Reading time: 5 minute The electrical appliances have a relatively complex construction, having in their composition all the following elements: current conducting paths, forming the electrical circuits of the appliance; insulating parts, which ensure the insulation of the current paths between them and the table; various mechanical elements (often moving); protection and support housing of the assembly.

Maneuvers and interventions in electrical installations - Characteristic damages

Reading time: 3 minute The main purpose of this paper is to expose in a form as accessible as possible how to perform maneuvers in electrical installations to reduce the time to perform maneuvers (stagnation in the use of electric machines, installations, etc.) necessary for technological processes, such as and for the prevention of technical or accidental work incidents.

Low voltage electrical networks with twisted insulated conductors

Reading time: 3 minute The paper presents problems regarding the construction, installation, operation and maintenance of low voltage electrical distribution networks with twisted insulated conductors. This type of network represented in 1980 a new low voltage electricity distribution system that used insulated conductors with plastics (poly-vinyl chloride), twisted in the beam, instead of uninsulated conductors.

Procedures for locating faults in power cable networks

Reading time: 2 minute The relative and absolute methods of locating the defects are analyzed: induction method, loop measurement method, capacitive method, acoustic method, pulse or ecometric methods, oscillating discharge method, method of locating defects caused by corrosion phenomena. There are also exposed some new methods (since 1976), less applied in our country: methods of locating partial discharges, the standing wave method.