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Star 220 v and delta 400 i star 58 percent only voltage applied delta 400v applied
AnswerThese figures do not represent three-phase, four-wire, system voltages, because if the line voltage were to be 440 V, then the phase voltage would be 254 V; or, if the phase voltage were to be 220 V, then the line voltage would be 381 V.
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Reverse motor for phase three?
If you mean to reverse the direction of a three phase motor, you just switch any 2 leads. switch 1 and 2, or 2 and 3, or 3 and 1.
What is the simplest way to run a 3 phase 380 V motor of about 1 KW directly on 220 V single phase supply without resorting to rewinding or frequency converters?
You cannot run a three phase motor on single phase power. You'll burn the motor up within minutes. By the way, I've never seen or heard of a 380 volt motor. Do you mean a 480 volt motor? If so, the only way you can power it is with the correct full voltage and a 3 phase power supply.
Can you run a double phase motor on home 220 volt system?
If you mean a dual voltage motor 120/240 then yes these will operate on a 240 volt home distribution system.
Why single phase induction motor has pulsating torque?
according to a mathematical theory the flux produced when an alternating current flows in a single phase winding , this flux is composed of tow equal components which result in tow equal torques , these torques work in opposite direction to each other , hence one causes the rotor to move in a certain direction while the other in the opposite direction . this is the reason why a single phase induction motor instead of its rotor to move in one direction it vibrates. the resultant of these torques is zero. if the motor is caused to move by an external mean say by hand , then the resultant will no longer zero and the motor continue revolving and it speeds up even the external mean is removed, For a single phase induction motor to be a self starting motor some techniques are used like connecting an additional winding called auxiliary winding and a capacitor which in some designs removed automatically when the motor speed come to a certain value while for other designs these elements continue to be connected . Any single phase induction motor is provided by a starting technique so if it vibrates , then this means that the technique is failed
What does s phase mean?
S-phase (synthesis phase) is the part of the cell cycle in which DNA is replicated, occurring between G1 phase and G2 phase.
Can a 380volt's 3 phase motor can be converted to 230volt's three phase motor?
Only if you want to damage it. "277" Volt 3-phase will usually mean 277 from each phase to neutral, and 480 from phase to phase. By "230 3-phase", you likely mean 120 phase-to-neutral, and 208 phase-to-phase. If you really mean 230, then you are probably NOT talking about a three phase motor.
What is the difference between a phase to ground connection and a grounded wye connection?
A 'grounded-wye' connection describes a wye-connected supply, whose star-point (or common point) is grounded. This is essential in order to ensure stable phase voltages. I'm not sure what you mean by a 'grounded-phase' connection; if you mean a 'grounded-line' connection, then this is a short-circuit to ground from a line conductor.
Reverse motor for phase three?
If you mean to reverse the direction of a three phase motor, you just switch any 2 leads. switch 1 and 2, or 2 and 3, or 3 and 1.
What is the simplest kind of motor called?
It really depends on what you mean by 'simple'. Motors don't come much simpler than a three-phase induction motor, whose field windings provide an automatically-rotating magnetic field and whose rotor doesn't require any connection to an external supply.
What is the simplest way to run a 3 phase 380 V motor of about 1 KW directly on 220 V single phase supply without resorting to rewinding or frequency converters?
You cannot run a three phase motor on single phase power. You'll burn the motor up within minutes. By the way, I've never seen or heard of a 380 volt motor. Do you mean a 480 volt motor? If so, the only way you can power it is with the correct full voltage and a 3 phase power supply.
Why will an induction motor burn if one phase fails?
Motor is running as a single phase motor with lower speed and creating noise. In this situation it will drawing higher current. If it runs for long time then insulation may get damage and ultimately burnout the winding.CommentThis is where the correct terminology is important. Do you mean 'phase' or do you mean 'line'? If you mean 'phase', then you mean that one of the field windings has failed; if you mean 'line', then you mean one of the supply conductors has failed.If you lose a phase, then the machine behaves like an open-delta or open-wye (depending on its configuration); if you lose a line, then you have two field windings in series with each other, in parallel with the third. Two completely-different situations.
Can 3.7 KWconverter suitable for 4 KW 3 phase motor?
It depends on what you mean by 'converter'; I'm not aware of such a machine. <<>> No, a 4 kW rotophase will not handle the start up current of a 4 kW 3 phase motor.
What will be the effect on an operating 3 phase induction motor if a phase leg is lost?
If the proper motor protection is in place, the motor's contactor will drop out and take the motor off line. If no motor protection is in place the motor will single phase. This will put a higher than normal operating current on the other two legs of the motor's windings.AnswerIf you actually mean 'lose a phase', then you've lost one of the three stator windings (which has become disconnected or burnt out). The machine will behave like an 'open wye' or 'open delta' transformer, and you will still have a rotating magnetic field. If, on the other hand, you mean that you've lost a 'line', then you simply lost one of the three supply conductors and you you will end up with two phase windings in series with each other and in parallel across the third, giving you a single-phase situation with no rotating field but you will have a pulsating field instead. The rotor will continue to run if already running, but will not start.It's important to use the correct terminology with three phase, and not to mix up the terms 'phase' and 'line'.
What does the phases on a nameplate of a motor mean?
On a three phase motor, the phases give you direction for how to hook the motor up to make it spin one direction vs. the other. If you hook up such a motor blindly with all three phases, it may spin in the opposite direction you want; to fix, you swap any two of the three phase connections.
Know how to wire up a 7.5 signal phase motor 240 volts 6 wires?
do you mean a 7.5 amp 240 volt....there is no such thing as a 7.5 signal phase motor that i have ever heard of...but this may help if you can't locate the plate on the side of the motor for the wiring diagram, look on the inside of the (junction box)
Can you run a double phase motor on home 220 volt system?
If you mean a dual voltage motor 120/240 then yes these will operate on a 240 volt home distribution system.
What happens if one leg in a 3 phase synchronous motor fails does it reverse its rotation?
No it does not reverse rotation. If the proper motor protection is used on the motor, the motor should trip off line. Loosing a leg will drive the other two legs of the motor into a higher than normal state. This higher current will be sensed by the overload protection and the motor contactor will drop out. This opening of the motor contactor will drop the supply to the motor and the motor will stop.To reverse a three phase motor, reverse any two feed wires to the motor. This is usually done at the motor's junction box to preserve the wire colour coding of the wires through out the system.AnswerDo you really mean a 'phase' or do you mean a 'line'? This is an example of where the use of correct terminology is important. 'Losing a phase' means losing one of the machine's three field windings, whereas 'losing a line' means losing one of the three supply conductors. Two completely different situations for a delta-connected machine.For example, for delta-connected field windings, the three-phase supply is maintained and the machine assumes an 'open delta' condition, whereas losing a line places two windings in series and in parallel with the third, across a single-phase supply.
