4/25/2023 0 Comments Low voltage drawberry![]() On the other hand, if a motor is wired for high voltage, it will fail to operate if connected to a low voltage source. However, if a motor is wired for low voltage, do not EVER connect it to a high voltage source (either Wye or Delta) as it will overheat. Regardless of the internal type of wiring, these motors can be connected to either a Wye or Delta supply - the supply and the motor are two entirely different subjects. Both have different purposes, but fortunately, they can usually be used interchangeably. These nine-wire motors may be internally connected with either a Wye (star) or a Delta configuration, established by the manufacturer. There are many motors with more or fewer wires, but nine is the most common. The most common type of three-phase motor is that which has nine labeled (and often colored) wires coming out of the box on the side. For the electrician, nothing is more important than understanding which wires should be connected to the incoming voltage lines for proper operation. The variety of motors is typically most obvious in the number of wires requiring connections. Instead, we see a few different motor types, often indicated by the wires and the data plate on the side. It would not be correct to say that one type of motor is superior, otherwise, that’s the only kind of motor that would exist. There is a wide variety that exists in the manufacturing of three-phase motors that drive heavy industrial loads. Not only that, but there are many different numbers of wires in each of these motor categories. However, there is much more to the story than simply connecting wires - there are both high and low voltage, as well as both Wye and Delta internal connections. Three-phase motors will almost always have a bundle of wires coming out the side, meant for connections to both incoming line power as well as establishing connections between windings. ![]() Check out Control Automation's exclusive eBook on motor wiring
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