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What is the Difference between single phase current and three phase current?
Wiki User
∙ 13y ago
given a balance three phase, three wires system with star-connected load for which lime voltage is 230v and the impedance of each phase is (6+j8)ohm. find the line current and power absorbed by each phase.
Wiki User
∙ 13y ago
Wiki User
∙ 13y agoSingle phase current is current on a single pair of conductors, one supplying the current, and the other returning the current. In a typical home type 120/240V system, the two conductors are hot and neutral for 120V, or hot and hot for 240V. This current has a sinusoidal waveform, with a period of about 16.7 ms in a 60 Hz system. (20 ms for 50 Hz)
Three phase current is current on three pairs of conductors, three supplying the current and three returning the current. There are two configurations; wye, which has three hots returning to one common neutral; and delta, which uses each conductor as both a supply and a return for the next conductor. Each conductor pair has a sinusoidal waveform. If you compare one against the other, you will note that each phase follows the prior phase by 120 degrees, or about 5.5 ms in a 60 Hz system. (6.7 ms for 50 Hz)
To be technically correct....current is measured in amps. A single phase work load will draw more current as the same work load in a three phase system.
Wiki User
∙ 9y agoThe terms 'phase voltages' and 'phase currents' are used in three-phase alternating-current systems, to distinguish them between 'line voltages' and 'line currents'.
In a three-phase system, the generator has three coils which generate voltages that are displaced from each other by 120 electrical degrees. The generator is then connected to the load using three conductors, called line conductors. The generator's three coils are described as 'phases', and the generated voltages are called 'phase voltages', while the currents flowing in them are called 'phase currents'. The voltages between the line conductors are called 'line voltages' and the currents flowing through the line conductors are called 'line currents'.
Similarly, the loads themselves represent 'phases', and the voltages appearing across the loads are called 'phase voltages' and the load currents are called 'phase currents'.
Depending on the configuration of the phases (they can be connected in 'delta' or in 'star'), the line voltages either equal the phase voltages or are 1.732 times larger than the phase voltages.
Wiki User
∙ 11y agocurrent -as a measurement of time (currently) now, the current time
current- descriptively the flow of watercurrents
current -as the measurable (medium) ray for electricity
currant- a piece of fruit, raisin like in texture, classified as a berry
Wiki User
∙ 11y agoThe line current is exactly equal to the corresponding phase current, in a star-connected system, because it is the same current.
Wiki User
∙ 11y agoThey are identical.
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Is there a difference between three phase and single phase electrical supplies?
Yes, there a difference between three phase and single phase electrical supply services.
Phase difference between voltage and current at resonance?
The power factor is a measure of the phase difference. If they are exactly in phase the PF = 1. If they are 180 degrees out of phase PF = 0.
What is the difference between a one phase and a three phase motor. And if a three phase motor is given a single phase supply will it run or not?
The difference between a single phase and a three phase motor is the amount of power conductors that feed the device. As to the other part of the question a three phase motor will not start or run on single phase. The phase angles on three phase are 120 degrees apart on a single phase system they are 180 degrees apart.
What is the difference between a single phase compressor and a 3 phase compressor?
One uses single phase AC current (120/240), the other uses 3 phase AC current (most households will not have 3 phase in their home) One uses a 3 phase motor the other a single phase motor. 3 phase is usually used in industrial applications while single phase is used in home or small business apps.
What is the different single phase unit price and three phase unit price?
If, by 'unit price', you mean the cost per kilowatt hour, then there is normally no difference between the cost of energy supplied whether by single-phase or three-phase supplies.
Is there a difference between three phase and single phase electrical supplies?
Yes, there a difference between three phase and single phase electrical supply services.
Single phase and three phase circuit?
Yes, there is a difference between single phase and three phase circuits.
What is current in three phase and single phase?
All current is the passage of electric charges from one terminal to another through a conductor so there is no real difference in the type of current that flows in a 3 phase system compared to a single phase system.
What is the difference between single phase circuit and tree phase circuit?
single phase have 2 wire treephase have 3, and 4 wires
Phase difference between voltage and current at resonance?
The power factor is a measure of the phase difference. If they are exactly in phase the PF = 1. If they are 180 degrees out of phase PF = 0.
What is the difference between a one phase and a three phase motor. And if a three phase motor is given a single phase supply will it run or not?
The difference between a single phase and a three phase motor is the amount of power conductors that feed the device. As to the other part of the question a three phase motor will not start or run on single phase. The phase angles on three phase are 120 degrees apart on a single phase system they are 180 degrees apart.
What is the difference between single and three phase on line UPS?
The difference between a single and a three phase online UPS is a 3 phase can supply a 100% unbalanced load on its output without affecting its performance. A single phase cannot supply a 100% unbalanced load on the output without affecting its performance.
What is difference between 0.8 leading and 0.8 lagging power factors?
Power factor measures the phase difference between voltage and current. If they are in phase the Power Factor is one. If the current and voltage are out of phase the power factor is between zero and one. You can describe the PF by saying the current lags the voltage with a PF = .8 or the voltage leads the current with a .8 PF.
Why is there a difference between a domestic and industrial electricity supply?
actually there is no difference between them. However in some counteries, single phase is used for domestic and three phase is used for industrial.
What is the purpose of capacitor in a single phase motor?
the purpose of the capacitor is to create a phase difference between main winding current and axillary winding. this would produce a rotating constant magnetic field which is required to produce the torque.
What is the difference between a single phase compressor and a 3 phase compressor?
One uses single phase AC current (120/240), the other uses 3 phase AC current (most households will not have 3 phase in their home) One uses a 3 phase motor the other a single phase motor. 3 phase is usually used in industrial applications while single phase is used in home or small business apps.
Why current and voltages are in phase in resistor?
1) in inductor there is generation of magnetic field due to flow of current . so there is phase difference in voltage and current . 2)in capacitor there is storage of charges. there is phase diff. 3)But in case of resistor there is no such things are happend . it is only a power dissipating element.therefor there is no phase difference between current and voltage.
