????Discover our ELECTRICAL COMMANDS course ➽https://eletr.co/epv3 (Sign up for the Course to Expand your Range of Services and Become a Specialized Electrician) ...................................................................... ✅ Did you like this video? ✅ Subscribe to the channel ➽ https://engehall.com.br/industrial ✍ Leave your comment ???? Share with friends ???? Follow our networks ➽ https://engehall.com.br/links_ind ...................................................................... Hey, my electrician friend!!. Welcome to another video here on our channel. Today, we are bringing another video in our series on CAPACITOR BANK. In the previous video, we showed all the components needed to assemble a capacitor bank directly from a substation. In today's video, we will learn how to size it, component by component, directly from the construction site. All component sizing is done through the capacitor current, so it is important to have them well sized. ……………………………………………………………………………………………. The equipment in the industrial environment is, for the most part, induction electric motors, transformers, among others. Such equipment demands inductive reactive energy. A transformer, when oversized, or operating in an empty state, causes low PF. Since, to guarantee its operation, the transformer needs reactive energy for the circulation of the magnetic flux in its core and, as there is little or no consumption of active power in its secondary, this proportionality causes a low PF (SILVA, 2009). The electric motor, similarly, when operating in an empty state or with a small load on the shaft, also has a reduced proportion between active and reactive power, thus causing low PF (CELESC, 2014; SILVA, 2009). There are situations in which motor oversizing is necessary, such as when a high starting torque is required to break the machine's inertia and, requiring little load during operation (WANDER et al., 2007). According to Silva (2009), another factor associated with low PF is the increase in voltage in the machine. Regardless of the electrical machine, when there is a magnetic field, the growth of inductive reactive power depends on the electromagnetic behavior of the circuit, characterized by the dependence between the magnetization curve and the voltage applied. This fact becomes more pronounced as the voltage imposed on the machine causes the magnetization curve to shift above the material's saturation point. The authors Silva (2009) and Celesc (2014) also present the reactors that power discharge lamps (metal vapor, mercury vapor, sodium vapor or fluorescent). These reactors, like motors and transformers, have coils and cause low PF. Silva (2013), in turn, mentions electronic ballasts that, if of good origin and with the correct specifications, present high PF levels, which can reach 100%. The use of low-power electric motors in large quantities results in low PF in installations. This is due to the oversizing normally used to obtain greater torque at start-up and due to their own construction, since their construction characteristics adopted by manufacturers cause a lower PF. The need to increase the number of poles to reduce the speed of the motors, which results in a greater number of coils, also puts these machines in evidence when analyzing the low PF. Mamede Filho (2013) shows that, in practice, during the preparation of electrical projects for small industries, it is very difficult to know, with reasonable confidence, technical details and the operating behavior of the plant, such as: Daily, weekly, monthly and even annual operating cycle; Motor load rate; Technical characteristics of motors; Schedule for expansion of production activities. Such data are used to determine the presumed average FP of the installation and, if necessary, to provide the means necessary for its correction. #embaixadordecomandosengehall