Electron tips

Why are high voltage transmission wires not insulated   Why are high voltage transmission wires not insulated You may notice when passing by high-voltage power line poles that the wires are completely bare and not insulated. So, why aren’t they covered with insulating material? The reason comes down to two main factors: First Reason: As we all know, high-voltage power lines transmit electricity ranging from 12,000 volts to 765 kilovolts. This is an immense amount of electrical energy. To insulate these wires, they would require an insulating layer with a thickness of up to 17 centimeters. Covering all these power lines with such material would result in extremely high costs. Second Reason: Insulating the power lines would significantly increase their weight, in addition to the weight of the wires themselves, which stretch for thousands of kilometers. Moreover, there is a risk of fire due to the large amount of electrical energy carried by the wires.

What is the Relay and how it's Works   What is the Relay and how it's Works Have you ever asked yourself what if you press an electrical control switch with high electrical capacity, what will happen?  Let me tell you that you will be electrocuted, so some special electrical elements are used to control the operation of high-voltage electrical circuits, for example, the contactor , the "Relay", which is our topic in this article. We will know what a relay is?  And how does it work?  And what is its exact mechanism of action? Definition of Relay : The relay is an electrical component that allows controlling electrical circuits that operate on high voltages by using a lower voltage that does not exceed 12 volts in order to avoid electrocution. The relay contains a coil of copper that generates a magnetic field when the electric current passes inside it, which leads to  To separate or connect the external electrical circuit that operates on a high voltage of more t...

Why Power Factor Does Not Exist in DC Electrical Systems why there is no power factor in dc The power factor (PF) is a concept used exclusively in alternating current (AC) systems to measure the efficiency of power usage. It is defined as the ratio between real power (P), which performs useful work, and apparent power (S), which is the total power supplied to the circuit. The closer the power factor is to 1, the more efficiently electrical energy is used. In contrast, power factor is irrelevant in direct current (DC) systems. Here’s why: "Constant Voltage and Current in DC In DC systems, both voltage and current are constant over time, unlike AC systems, where they fluctuate sinusoidally. The real and apparent power in DC systems are always equal since there is no phase angle or waveform distortion to consider. As a result: 𝑃=𝑉×𝐼P=V×I Where  P: is the real power,  V : is the voltage, and  I  : is the current. Absence of Reactive Components AC systems often include...