Engineering is a discipline and a field of study that consists of the application of scientific knowledge to the solution of problems and challenges faced by mankind, in its many different areas. This involves the design, construction and development of tools, machines and facilities, as well as the management of natural resources, the production of synthetic materials or the conceptualization of processes and systems.
Engineering is an extremely broad discipline with a large number of specific applications, through which it addresses different aspects and problems of human life. Its most important branches are:
Mechanical engineering. This is one of the oldest and most important branches of engineering, dedicated to the study and design of machines: from robots and hydraulic or refrigeration systems, to land and sea vehicles or spacecraft. Mechanical engineering makes use of the principles of physics to compose complex tools, allowing new construction dynamics, obtaining energy, displacement, and a gigantic etcetera. In general, when we think abstractly of engineering, we usually think of mechanical engineering.
Industrial engineering. It is dedicated to the study and optimization of the productive processes and systems of mankind, through which raw materials are converted into various manufactured products for direct or indirect consumption. This branch of engineering became in the 18th century one of the most relevant disciplines in the labor, economic and technological world of the time, and continues to be so today. The design and development of machinery, tools and all kinds of productive circuits is at the heart of the consumer society, and engineering makes use of all kinds of disciplines and sciences to achieve the goal of making production more viable and efficient.
Civil engineering. This branch can be understood as engineering dedicated to making the world passable for human beings, since it uses formal tools such as calculus, sciences such as physics and the practical study of the real environment, to design and build facilities and constructions, such as ports, bridges, dams, dykes, dykes, etc. It is in close contact with urban planning and architecture, and is one of the most fundamental branches of engineering worldwide.
This electromagnetic device protects us from the consequences that can be derived from a current leak in our installation. It is called differential because it is capable of measuring the possible difference between the input current and the return current in an electrical system.
How does it work?
The input and output currents have a very small differential, when this differential exceeds the sensitivity for which the switches are calibrated, a current is created that activates the electromagnet which in turn enables the opening of the switch contacts, preventing the current pass.
If there is no earth connection, or it is not connected to the plug, the differential will activate when such derivation occurs in the electrical device through a person who touches its metal parts, and it is on a conductive ground, it will cause a discharge that it would be dangerous or even deadly if the current exceeds 30mA
In the differential switch there is a test button that simulates a defect in the installation and therefore, when pressed, the installation must disconnect, it is recommended to test the switch periodically.
There are different degrees of sensitivity to establish the value of the current with which the flow will be disconnected:
