What is the Difference between single phase current and three phase current?

Answer 1

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.

Answer 2

Single 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.

Answer 3

The 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.

Answer 4

current -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

Answer 5

The line current is exactly equal to the corresponding phase current, in a star-connected system, because it is the same current.

Answer 6

They are identical.