Some devices are able to be connected to either.Įach country uses either 50Hz or 60Hz. If you look on your electrical devices you’ll see either 50Hz or 60Hz that’s the manufacturer telling you what type of supply the equipment needs to be connected to. We measure cycles in the unit of Hertz or Hz.
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When the magnet completes 1 full rotation, we call this a cycle. One on the top and one of the bottom to cover the magnetic field. We split the coil into two, but keep them connected and then place Instead of someone moving a magnet back and forth all day,Įngineers instead just rotate it and then place a coil of copper wire around This is much like the tide of the sea, the water flows backwards and forwards constantly again and again. If we move the magnet forwards and then backwards then we get AC or alternating current where the electrons move forwards and then backwards. If the magnet moves forward in only one direction then the electrons flow in just one direction and we get DC or direct current, this is much like water flowing in a river directly from one end to another. If we wrap the copper wire into a coil then we can fit more copper atoms into the magnetic field and we can move more electrons.
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The magnetic field causes the free electrons to move in the same direction. To make them move in the same direction we move a magnet along the copper wire. This loosely bound electron is free to moveīetween other copper atoms and they do actually move all the time but in random We use copper wires becauseĮach of the billions of atoms inside the copper material have a loosely boundĮlectron in the outer most shell. We get useful electricity when lots ofĮlectrons move along a cable in the same direction. So what’s happening here, why do we get different voltages When I connect to all three phases I get three sine waves all in a row. If I connect an oscioscope to the single phase I get a sine wave. You can look them up online or we can just measure it at home if you have the right tools. These are the standard voltages set by each countries government regulations. For example: North America uses ~120V, Europe uses ~230V, Australia and India uses ~230V and the UK uses ~230V.
The voltage from these plugs varies depending on where in the world we are. We use the plugs in our homes to power our electrical devices. So in our last three phase tutorial we looked at the basics of whats happening inside three phase electricity systems and in this tutorial we’re going step it up just a notch and look a little deeper into how these systems work and the basic maths behind them. Scroll to the bottom to watch the YouTube tutorial video on three phase voltage + calculations We’ll cover how 3 phases are generated, what a Cycle and Hertz mean, plot the voltage wave form as it’s being generated, calculate our single phase and three phase voltages. In this tutorial we’re going to be learning more about three phase electricity.
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