We often hear people mention three phase electricity meter or three-phase electricity, but in fact, we don’t know much about the concept of three-phase electricity. So what exactly is three-phase electricity?
Three-phase electricity is firstly three wires and three live wires, and because they are arranged symmetrically in the generator, the electrical angle between them is 120 degrees. China stipulates that the electricity standard is 220 volts relative to the ground, which is commonly known as The phase voltage, from which the voltage between the two live wires can be calculated. Since the electrical angle between the three live wires is 120 degrees, and the electrical angle between the fire and the ground is 90 degrees, the line voltage is 3 times the root of the phase voltage. The value of root number 3 is 1.732. 220x1.732 is equal to 380 in the end. It is not correct if you can't bring up single-phase high power. We all know that voltage is inversely proportional to current. One kilowatt of power uses three-phase electricity about two amperes. Electric current and the use of single-phase current is 4.5A. Similarly, there are extra-large motors that must use 660 volts to reduce the current. Others, three-think alternating current is also called alternating current, for example, the power frequency is 50 Hz, that is, the current alternates per second. 50 times, it is exactly this principle. In the case of three-phase balance, the currents on the zero line will cancel each other out to achieve true zero voltage.
This is the understanding of three-phase electricity. For more information, please visit the kilo watt-hour meter .