Although we can often hear the three phase meter , our understanding of three phase meter should be limited to this level. So how much do you know about what is three-phase?
Three-phase electricity is firstly three wires and three live wires, and because they are symmetrically arranged 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 cannot bring 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 is 4.5A current. Similarly, there are extra-large motors to reduce the current, and a voltage of 660 volts must be used. 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.
The above is the three-phase explanation. For more details, please visit Electromechanical KWh Meter .