The advantage is lower wire usage and lower power losses. 3-phase power has some other advantages such as 3-phase motors being superior in performance.
Studies have shown and proven that 3 phase four wire system (three phases and a neutral) is most economical and optimal solution. Hence industry has adopted it.
3 phase /sqrt(3) * 30 degree phase shift = single phase.
There are several advantages of 3-phase power over single phase power. First, with 3-phase power, more power can be transferred with the same amount of wire (meaning the amount of copper used in all of the conductors transferring that power) as with single or 2-phase power. Also, power is transferred more "evenly" with 3-phase power because the "next peak" is closer than it is with single and 2-phase power. The 3-phase motors run more smoothly than those run on fewer phases. Also, there are motor design considerations (one being control of the direction of rotation) regarding the motor that make 3-phase power more attractive. Use the link to the Wikipedia article on 3-phase power and skim it. It isn't long and it is quite readable.
safe isolation 3 phase
There is phase to phase voltage in 3 phase system.AnswerYou don't get voltage 'phase-to-phase'; it's 'line-to-line'!
The type of transformer is dictated by the type of supply. A three-phase supply is used in power distribution because it dispenses with half the wire and therefore half the power losses in the circuit. In principle a three-phase transformer could be replaced by three separate single-phase transformers to provide the same service, but there would be double the mass of transformers, in other words the three single-phase transformers would be twice the weight of the three-phase transformer.
it can tell you which way a motor will turn before you apply power sometimes nice to know
None what so ever. The cost of changing all of your equipment and new service would be high. The electrical bill is based on wattage used be it single phase or three phase.
The main advantage is that the 'footprint' of a three-phase transformer is smaller than a transformer bank, and all connections are prewired which makes them easier and quicker to install and replace.
A 3 phase system needs only to use 3 or 4 conductors, as against 6 conductors if it were 3, single phase conductors The amount of copper used in a 3 phase is much less than what would be needed in a single phase system carrying the same current, this reduction in copper allows for weight reduction and cost savings. The power losses in a 3 phase system are much less than in a single phase system.
You still need the same horsepower. The advantage of the three-phase motor is that it will draw lower current.
saturated phase
what is 3 phase eletical conction digram of 3 phase motor
3 Phase system is for industrial use and 1 phase is for house hold application
By having a transformer with 3 phase input and single phase out put
3 phase /sqrt(3) * 30 degree phase shift = single phase.
Use VFD to make 3 phase from single phase source.
There are several advantages of 3-phase power over single phase power. First, with 3-phase power, more power can be transferred with the same amount of wire (meaning the amount of copper used in all of the conductors transferring that power) as with single or 2-phase power. Also, power is transferred more "evenly" with 3-phase power because the "next peak" is closer than it is with single and 2-phase power. The 3-phase motors run more smoothly than those run on fewer phases. Also, there are motor design considerations (one being control of the direction of rotation) regarding the motor that make 3-phase power more attractive. Use the link to the Wikipedia article on 3-phase power and skim it. It isn't long and it is quite readable.