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A three phase motor looks like any other motor from the outside. It might be a little larger than a standard motor but it looks the same. If it is not hardwired but has a plug, the plug will have four prongs instead of three. The socket will look different from a standard socket or the socket for a stove or air conditioner. It will also have four holes. The hole for the ground plug will have a special indent. That makes it so you can not put the plug in wrong. A two phase motor will run the correct way regardless of how you put the plug in the socket. If you would put the plug for three phase motor in the socket the wrong way, the motor would run backwards.
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How do you wire a 3-wire 120V 15A pump motor?
Normally this is not an option as single phase and three phase motors are built differently it is also very dangerous to try hooking it up this way. You can try taking it to a motor shop and having it rebuilt but the costs associated are really not worth it and most "reputable" motor repair shops will not attempt this. It will be cheaper and cause less problems to just purchase the correct motor for the application. Trying to retrofit anything to something other than its intended purpose is hard, expensive, and dangerous. So once again I would not attempt this.
Where can you get a free wiring diagram for a 480 volt reversible motor?
If the motor is 3-phase (it will say so on the nameplate), you don't need a diagram. just hook up all 3 wires in any order. If the motor runs the wrong direction, swap any two of the phases. This is true for all 3-phase motors. Its that simple! Warning: this obviously will only work if you have 480v, 3-phase power available. If you are trying to do this at home, it almost certainly won't work, because homes (in the US) typically have 240v 1-phase power. Trying to run a 3-phase motor directly on single phase power will destroy it. There are various ways to convert single phase power to three phase, but if you are having a hard time just hooking up the motor, they are beyond your ability at this time. Get a qualified electrician to help you! It could save your motor, and quite possibly your life!
What happens if the high and low speed wires are switched on a 3 phase motor?
I am guessing that what you are talking about is a two speed motor. The motor should have 6 wires coming out of it. There are two complete sets of three phase windings for each speed. Look on the motor name plate for the wire numbers or sometimes on the inside of the motor junction box. A 2 speed 6 lead motor should have the following markings, 1U 1V 1W for slow 2U 2V 2W for fast. Also check for the two different amp draws for each winding. These types of motors should be run from a reversing type contactor assemble so that individual overloads can be used on each of the high speed windings and on the low speed windings.
Why is it the control of a three phase motor trips when changing from wye configuration to delta?
Few things to look for, one, are the contacts good on the run contactors. Two, has the motor wiring been changed in any way, contactors or leads on motor. Trace wiring and make sure the leads are paired correctly to the starters. Three, make sure the start timer is not bringing the run contactors in too late. Also check that the shorting contactor is opening when the run contactor comes in.
Can you join two of single phase to two phase power system?
This is a rubbish questionTwo single phase transformers can be combined together to make a three phase system. It does not become a two phase system. Look up information of an open delta wired distribution system to see how they are tied together.See related links below.
How do you determine a 3 phase motor and each winding?
To see if the motor is three phase or single phase look at the motor's nameplate. There it will tell you what the voltage needs to be and what system phase the motor needs to be connected to operate properly.
How do you you connect a 4-prong appliance to a 3-prong outlet?
Sounds like you want to connect a three-phase machine to a single-phase supply. Very inefficiently, a three-phase motor can be ran on single phase by electrically displacing the windings with a capacitor. Other than that, you will need to either look at getting yourself a phase change converter, or having a three-phase outlet installed.
How do you wire a three phase 2 speed motor to run on fast speed only?
Look on the inside of the motor's junction box. This is where the wiring diagram is located and it will tell you what connections to make.
What size motor do you need to run a compressor 2 stage 80 gallon tank i have a 3 phase on it and want to change motor?
You probably need a 5hp or 7hp motor. Look for HP rating o the 3 phase motor and select the same for single phase. 3 phase has same power but is more efficient at electricity use. Also consider a 3 phase converter. It allows a 3 phase motor to run on single phase service.
How do you mega a motor 3 phase?
The megger leads are connected in the following manner. Black lead to motor ground terminal or motor frame. The other lead to one of the phase wires. Meg that coil to ground and note the reading. Do the same with the other two motor leads and note the readings. Look at all of the three reading that you have taken. Engineers like the reading to be above 5 meg. Preferred readings about 2 meg. Motor needs looking after below 1 meg.
How do you mega ohm a motor 3 phase?
The megger leads are connected in the following manner. Black lead to motor ground terminal or motor frame. The other lead to one of the phase wires. Meg that coil to ground and note the reading. Do the same with the other two motor leads and note the readings. Look at all of the three reading that you have taken. Engineers like the reading to be above 5 meg. Preferred readings about 2 meg. Motor needs looking after below 1 meg.
What does the blower motor look like?
it looks like what its suppose to look like a plain motor.
How do you wire a 3-wire 120V 15A pump motor?
Normally this is not an option as single phase and three phase motors are built differently it is also very dangerous to try hooking it up this way. You can try taking it to a motor shop and having it rebuilt but the costs associated are really not worth it and most "reputable" motor repair shops will not attempt this. It will be cheaper and cause less problems to just purchase the correct motor for the application. Trying to retrofit anything to something other than its intended purpose is hard, expensive, and dangerous. So once again I would not attempt this.
How do you check phase sequence?
It's outside the scope of this answer to go into the theory, but a 3 phase motor by convention normally rotates anticlockwise when viewed from the 'driven' end. To check phase sequence, the usual method is to use a phase sequence indicator. Originally these were like a miniature three phase motor encased in a hand-held device. If the flying leads were connected RYB, BRY, or YBR, the disc in the psi would rotate anticlockwise. If the flying leads were connected RBY, BYR, or YRB the disc would rotate clockwise. Nowadays, the mechanical aspect of the phase sequence indicator has been repalced with solid state devices that indicate on one of two leds if the sequence is c/w or ac/w. To check phase sequence you look for which phase out of the three phases peaks first. You could probably put each phase on an oscilloscope and see which one peaks first. Phase sequence is usually taken as positive anticlockwise from the reference voltage ( the phase that peaks the first).
How do you identify terminals in three phase motor with two speed in cone type motor with brake system?
I usually look at the data plate on the side of the motor, or inside the terminal junction cover. If neither are there, a motor rewinding shop could open it up and tell. Different manufacturers are known to use their own color codes. Esp. if it's a foreign make.
What does a helicopter motor look like?
most look like a small jet engine
When the label says requires 208-240V 20amps 60HZ how do you know if it is single or three phase?
Please be more specific is this a transformer or motor or something else? Did you check the spec sheet? Did you look for any markings on the package?
