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no
Under most conditions the answer would be no, however I experienced this very occurrence myself. This is the condition it happened under: Wiring a three phase power band saw with a hydraulic pump. The pump was used to clamp the work in place and raise the cutting head. One of the wires for the pump motor had come out of the factory installed terminal strip. When the saw was started the pump ran in reverse, we changed the rotation at the disconnect. Started the pump again, the pump again ran in reverse. Thinking we had reconnected it incorrectly, we again changed the phasing. Started the pump again, again it ran in reverse. We started looking the wiring over and found the wire out of the terminal strip, corrected this problem and the motor ran in the right direction. Why did this happen? A three phase motor will run with only two phases connected as long as there is no load on the motor. The pump only loaded the motor when it was turning in the right direction and pumping oil. The pump provided no load when turning in reverse and the motor could easily turn it.
Wiki User
∙ 11y ago
Wiki User
∙ 14y agoNo it can not. To make a three phase motor run in the opposite of normal rotation it has to be wired to go in that direction. Vertical turbine pumps have ratchets on the top of the motor housings to prevent this condition from happening. When a motor starts it has a high inrush current for a 5 second time interval. If a pump was turning backwards when the pump was started the motor rotor would have to come to a stop and then start turning in the correct rotation direction. This would take it beyond the 5 second natural time interval and would prolong the high current on the motor stator. This would cause the motor to trip the overloads and shut down. Nowadays most pump motors are controlled with VFD's (variable frequency drives) and use a ramp up feature to overcome the inrush current by starting the motor to rotate slowly. Even this type of starting is engineered to start from a stopped rotor making the ratchet is still viable on the pumps of today.
Wiki User
∙ 12y agoIf the AC drive that you mention is a VFD then it has to be programmed to rotate the way you want it to turn. Some have the ability to be changed right from the face hand controller others have to be programmed. Just by connecting the wire colouring code to the output of the drive does not guarantee which way it will turn. Go into the program set up and select from the menu, the rotation that the motor requires to operate correctly.
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How will work motor 460V 3ph 60Hz at 380V 3ph 50Hz power net?
It will not work at all.
What is the advantage in running a 3pH motor on a 1pH circuit?
The 3PH motor has no internal contacts for a centrifugal switch and are therefore more durable when switched on and off frequently,
What are advantages of 200V 3ph motor over 380V 3ph?
In most applications 200v is easier to get for a supply voltage than 380v.
How do you abbreviate the word Phase?
Ph such a three phase is 3Ph for example
How do you wire a Bridgeport Mill running on 440 3ph to 240 3ph?
Hi there are a few options. The one I chose was to use a VFD (variable frequency drive). First though if you want to run off true lower voltage you will need to check that the motors can be reconfigured to run as delta instead of star. If you look at the motor plate this should give you some idea. If you are lucky the motor terminals will have links that let you move them to reconfigure. If not you will have to research further on the net. If you use a vfd instead of a rotary or static inverter then you will have to connect the output of this directly to the motor ie with no switches in between. All the control like forward, reverse etc are them controlled as low voltage inputs to the inverter. With a rotary or static inverter it is possible to feed the output of these inverters to the supply of the existing wiring but motor voltages and contractors may not work on the reduced supply.
How will work motor 460V 3ph 60Hz at 380V 3ph 50Hz power net?
It will not work at all.
How do you calculate 3ph AC motor power?
How do you calculate 3ph AC motor power?
What is the advantage in running a 3pH motor on a 1pH circuit?
The 3PH motor has no internal contacts for a centrifugal switch and are therefore more durable when switched on and off frequently,
What are advantages of 200V 3ph motor over 380V 3ph?
In most applications 200v is easier to get for a supply voltage than 380v.
How do you abbreviate the word Phase?
Ph such a three phase is 3Ph for example
What supply is needed to run a 22kw 3ph motor?
question is incomplete, I think you ask how much current consumed by this motor. for starting this motor we need a star/delta starter and a three phase supply.
How do you wire a Bridgeport Mill running on 440 3ph to 240 3ph?
Hi there are a few options. The one I chose was to use a VFD (variable frequency drive). First though if you want to run off true lower voltage you will need to check that the motors can be reconfigured to run as delta instead of star. If you look at the motor plate this should give you some idea. If you are lucky the motor terminals will have links that let you move them to reconfigure. If not you will have to research further on the net. If you use a vfd instead of a rotary or static inverter then you will have to connect the output of this directly to the motor ie with no switches in between. All the control like forward, reverse etc are them controlled as low voltage inputs to the inverter. With a rotary or static inverter it is possible to feed the output of these inverters to the supply of the existing wiring but motor voltages and contractors may not work on the reduced supply.
What is the maximum amp for motor 5.5 kw 4 pole 3ph?
power , P=1.732*V*I*power factor so, the formula for calculate the load current for a 3 phase motor is,I=P/(1.732*V*power factor)
Can you get a 230v supply from a 120v 3ph supply?
Yes.
What should be normal bladder pH?
2-3ph
What rating of capacitor is used on single phase motor?
If a capacitor is directly connected across a motor then the capacitance of the capacitor will be calculated as under.Q = 0.9 * Sqrt (3) * V * I0.Here "V" = Supply voltage & I0 = No Load Current of Motor.AnswerThere is no need to connect capacitors across a three-phase motor.
Can you wire a 460V 1PH motor to any 460V 3PH system?
Yes, as long as you use only one phase of the 3 phase system. If R & Y gives 460 volts, use R & Y. This not a good approach though.
