In this lesson we'll learn to read and interpret motor connection diagrams and determine the electrical relationship of the stator windings using motor connection diagrams. I will have to do some studying to understand this completely but I'm pretty sure I have this connection done correctly. What does this translate to in real life? It is designed to operate with a selection of wiring configuration for a variation of source voltage ratings for both high and low voltage operation. The economic loss from premature motor failure is devastating. I have had to reterminate motors where all the wires got chopped off and that gets a bit tougher but your situation should be easy. You'll have to assign numbers to the leads. All calculations or information should be independently verified.
The motor runs on 220 volts but is much louder than I would expect so I'm wondering if that lead arrangment is correct? Another way of describing it is to say that the separate windings can be labelled: Winding 1: A1 B1. But within a few hours or minutes the motor will let the smoke out. This is the conductor that helps protect you in case of short circuits. You need a double pole double throw switch. Now, to answer your question - The appliance will operate without the third wire, just not safely. You would need a 3-phase contactor and just connect each phase 1 wire to each terminal of the line side of the contactor, and the 3 wires to the load side. As always, if you are in doubt about what to do, the best advice anyone should give you is to call a licensed electrician to advise what work is needed.
This offers a total of four wiring possibilities. Here, the high voltage would be the wye, and the low voltage would be the delta. Before you do any work yourself, on electrical circuits, equipment or appliances, always use a test meter to ensure the circuit is, in fact, de-energized. I personaly prefer 12 lead. I would think that these wires would be for several different voltages, but I have no way of knowing what voltages, and which wires. That drawing we said to follow could be wrong.
Without a timely correction, this heat will damage the motor. It is required by code. This means that the motor was specifically designed for dual voltage operation which can be supplied with either low voltage or high voltage configuration. But, it's only representative and does not give precise information that applies to all motors. Each of the leads should have a label, such as T1, T2, T3, etc. What is the nominal speed rating of the motor? Whenever in doubt, a detailed wiring information for each designated voltages designed for the motor's operation is also provided on the nameplate, or alternatively, wiring configuration for specific voltage operation can also be found on the cover of the motor's terminal box.
There are no markings of any kind on either the motor, or the wires. With a six-lead set-up, you cannot choose whether you get a high-voltage or low-voltage system, but with a nine-lead set-up, you can select either one, using either configuration. High voltage will always tend to reduce power factor, thus increasing the losses in the system. The little bit of text that is on the wires is just wire text, ie. There are lots of good contents to go through here, so it is a good idea to subscribe to this site to keep you updated of new articles so you can come back again later as often as you want and go over the contents at your own pace. Connect the remaining leads 4, 5, and 6 together. Efforts had been made to assure the accuracy of the information, however no warranty is expressed or implied, and no liability or responsibility can be accepted for incorrect information.
Then connect supply L1 to A1 ; supply L2 to A2 and supply L3 to A3. Also, the rise in full load amps at voltages above rated tends to be steeper for some motor winding designs than others. Note that this must be the power supply ground conductor, not a wire leading to a ground rod nearby. If the motor … has more than three leads, and they are not marked, it is much more difficult. In this case, you already have a high current draw, so voltage is already lower than it would be without the load. Enter your email address: Delivered by Google's. The motor will have to be appropriately selected accordingly, which is basically dependent on the application for which the motor is intended to operate based on the available source voltage where the motor is to be installed.
Since the star connection requires higher voltage for normal operation, the motor is effectively being operated at substantially reduced voltage. A good tip: before you ever start hooking one up, study its schematic wiring diagram carefully to be sure you really understand which of its terminals connect to which motor terminals, and where to connect each line of the 3-phase service cable. This is also true of ballasts in fluorescent, mercury, and high-pressure sodium light fixtures. Study some electrical material and the National Electrical Code and work this answer out for yourself. The previous article presented the terminal wiring connection for a 12 leads star wye configured induction motor. Connect the other motor leads 4, 5, and 6 together.
One of the contactors bridges between 10,11 and 12 during the starting period, which is usually an adjustable time. Incandescent lights are especially susceptible to high voltage. Another variation of wiring configuration for a 12 leads motor connection apart from the 12 leads star wye connection is the. For example, a 10% voltage decrease would cause a 10% amperage increase. The prices of these solid state devices have become much more competitive with the star-delta starter in recent years and the wiring is so much simpler--three leads plus ground in and three leads plus ground out to motor.
Kevin Beck holds a bachelor's degree in physics with minors in math and chemistry from the University of Vermont. Take three sets of wires. They are generally held to a standard. Before you connect any wires, check the drawing carefully. Connecting these is a bit more complicated, and mistakes are actually common.
Generally, a 12 lead motor is a dual voltage motor. Operation on a continuous basis at either the high or low extreme will shorten the life of the motor. This lecture covers: 3 lead y, 3 lead delta, 6 lead y, 6 lead delta, 9 lead high voltage y, 9 lead low voltage y, 9 lead high voltage delta, 9 lead low voltage delta, 12 lead high voltage y, 12 lead low voltage y, 12 lead high voltage delta, and 12 lead low voltage delta configurations. The more heat and the longer the exposure to it, the more damage to the motor. The 12 leads represent six different windings.