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What happens if the high and low speed wires are switched on a 3 phase motor?
Wiki User
∙ 15y ago
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.
Wiki User
∙ 15y ago
Wiki User
∙ 12y agoits simple,if we are interchange the two terminals of inputs the induction motor starts to rotate in reverse direction
Wiki User
∙ 11y agoIf you interchange any two of the supply legs of a three phase motor, the motor will operate in a reversed rotation than is did before the interchanging of the supply legs.
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What happens to the speed of light in motor oil?
As long as the light remains in the motor oil, nothing happens to its speed.
Single phase motor speed is determined by the?
Motor's number of poles.
How do you reduce the speed of a 15 kW 3 phase motor without using variable speed control?
If the load is connected to the motor via belts, you can change the speed the load is turning by changing the pulley sizes. To get the load to slow down, increase the size of the pulley on the load; to get it to speed up, increase the size of the pulley on the motor. To reduce the speed of the motor itself, you'll have to alter the line frequency, which you can't do without a variable frequency drive attached to the motor.
Application of feedback control system in electrical?
One application of feed back control is where the speed of a motor has to be maintained at a certain RPM and the load it drives is variable. Feedback from the load tells the VFD (Variable Frequency Drive) motor controller what to do. As the load drags the motor speed down the feedback unit sends a electrical impulse to the VFD to increases the speed of the motor. As the load drops off the feedback unit sends a electrical impulse to the VFD to decreases the speed of the motor. These interactions keep the motor RPM at a constant speed. This is a very simplified version of what happens.
What are the advantages of open end winding induction motor over conventional induction motor?
Open ended induction motor - i assume you are talking about split phase induction motor. With these motors old style speed controlling method using external resistors can be used. However this is now obsolete.
Will single-phase Induction motor run on one winding once it has been started?
A single-phase induction motor has a main winding and a starting winding. When the motor has run up to normal speed the starting winding can be switched out, but for small motors this is not usually worth the trouble.
Will a single-phase Induction motor run on one winding once it has been started?
A single-phase induction motor has a main winding and a starting winding. When the motor has run up to normal speed the starting winding can be switched out, but for small motors this is not usually worth the trouble.
What happens to a 3-phase motor with a part-winding start when one side is disconnected while running?
the motor will continue to operate at a reduced speed and experience vibrations
Will a induction motor run on one winding once it has been started?
A single-phase induction motor has a main winding and a starting winding. When the motor has run up to normal speed the starting winding can be switched out, but for small motors this is not usually worth the trouble.
What happens to the speed of light in motor oil?
As long as the light remains in the motor oil, nothing happens to its speed.
How do you make a 9 wire three phase motor into a three speed motor?
You don't.
Single phase motor speed is determined by the?
Motor's number of poles.
Can 3 phase induction motor work when one phase is failed?
yes the motor will rotate but less then the rated speed and more heat will be desipated
Speed control of motor using SCR?
An SCR chip is commonly used to control the speed of a motor. The speed is controlled using an AC circuit and phase angles.
Does the speed of a split phase motor change apporeclably with a change in the applied voltage?
no
How do you wire a three phase motor with two speed?
Star and delta connection
3 phase reverse relay can be utilized for motor control speed?
3 phase reverse relay can be utilized to control 480V motor 60HZ for controlling their speedspeed.
