Online Magazín

V súčasnosti existuje mnoho vychytávok, ktoré dokáže prispievať k nášmu pohodliu, komfortu , no i bezpečnosti v domácnosti. Stretávame sa s pojmami z oblasti techniky a technológie, ktoré sú nám cudzie a častokrát ani netušíme, že sú súčasťou aj našich zariadení v domácnosti. Možno ste sa už stretli s pojmom stykač. Ide o spínač, ktorý je elektromagneticky ovládaný a jeho hlavnou úlohou je spínanie elektrických obvodov v rámci stredného a vysokého výkonu. Ide o šikovné zariadenie, ktoré sa postará o úsporu vašich peňazí i bezpečnosť v domácnosti. Aj keď stykače nájdu svoje uplatnenie najmä v priemysle (využívajú sa najmä pri elektromotoroch), môžeme ich čoraz častejšie vidieť aj v domácnostiach. V našich domovoch si nájdu svoje miesto hlavne pri zapínaní a vypínaní rôznych spotrebičov. Stykač funguje tak, že po privedení napätia do cievky, začne cievkou …

Read More »

These are mainly electrical devices, which are able to regulate the speed of the motors by their accuracy, when the speed of the alternating current changes without affecting the electric consumption. It is designed to receive the required commands to control the speed. In the following sentences, we will try to explain its purpose of use in the control of the speed of AC motors. The most used frequency inverters work is to change the motor speed due to the change in the frequency or number of poles of the stator. The number of poles is precisely given for each motor, their number is not changeable. However, its speed can be changed by changing the engine speed. However, changing the motor frequency causes an increase in the magnetic supply when the motor draws off a …

Read More »

There can be different ideas about what qualifies as a low, medium or high voltage motor. “Some people consider anything above 1000 V as high voltage. The limits are clearly defined, however, in the IEC 60038 standard: low voltage is up to 1000 V, medium voltage is from 1000 V to 35 kV, and high voltage is over 35 kV. Electric motors operate on the principle of using the magnetic field force effects. In layman’s terms, this principle can be explained by the use of mutual attraction and repulsion of electromagnets or the attraction of electromagnets and iron. The polarity and strength of the electromagnet can be controlled by the magnitude of the current flowing into it. The electric motor has three modes of operation or modes: motor, generator and brake mode. The principle of …

Read More »