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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.

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10y ago
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11y ago

I'm not sure of all the advantages; however, one possible advantage is a more constant voltage since there are 3 legs of power instead of 2.

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Two-phase systems, in which the two phase voltages are displaced from each other by 90 degrees, are archaic and are generally no longer used, having been replaced by three-phase systems which are more economical.

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12y ago

Less energy

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Q: What is Advantage of 3 phase transformer?
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Related questions

What are the advantages of 3-phase transformer over 3 single-phase banks of transformers?

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.


How do you get 380 volt from 220 3 phase?

Only with a 3 phase transformer.


How do you convert a 3-phase system to a single phase?

By having a transformer with 3 phase input and single phase out put


How you differentiate between single phase and three phase transformer?

A single-phase transformer works with a single-phase supply, while a 3-phase transformer is used with a 3-phase supply. A single-phase transformer has 2 wires on the primary and secondary (ignoring taps) while a 3-phase tansformer has 3 or 4 wires on the primary and secondary.


How do you calculate amperage of a 3 phase transformer?

Total KVA of the transformer divided by (square root of 3 times the voltage). This will give the individual phase currents. These individual phase currents will be 120 degrees out of phase with each other.


Can a 3 three phase motor be run with a scot t transformer on a 2 phase supply?

A Scott transformer converts 3-phase to 2-phase and vice versa, so if you get a Scott transformer it can convert a 2-phase supply into 3-phase for the motor. Caution: the 2-phase supply has to be a genuine 2-phase as defined, with 90 degrees phase between the two phases, and these are extremely uncommon. A Scott transformer CANNOT be used with the split-phase supply found in many US homes which have a 240 v single-phase transformer with the centre earthed and connected to a neutral wire to produce two 120 v circuits.


Can 3 single phase transformers can replace 1 three phase transformer?

Yes, you can use three single phase transformers on three phase applications and interconnect them to serve as a single transformer or you could use one single phase transformer fed from two of the three lines in a step down application.


How many 16 Amps per phase welding outlet can you install to a 30 KvA rating transformer?

..the questions does not say wether the 30kVA transformer is 3 phase transformer or single phase transformer..but it is implying that a single phase welding load at 16A per phase is to be connect to it, it is assumed then that the transformer is 3 phase transformer..we assume load is rated 240V.. ..though not much details is given about the transformer voltage specs. but if is rated 3 phase 415/240V, the approx full load current per phase is given by 30KVAx1.3912=41.736A.. ..but if the transformer was rated single phase 240V say, the approx full load current FLC=30000/240V gives 125ampers.. ..if you further devide the FLC by the intended load current.. ..Recommended no of welders per for a 3 phase 415V transformer and assuming single welding sets =41.736/16=2.6..so you can connect max two welding sets to this transformer per phase,..max 6 weld sets can connect at an approx load factor of 76%.. ..for the single phase transformer, FLC/16=125/16, gives 7.8 but is also recommended not to connect more than 6 welding sets to such transformer for the same reasons..


What transformer do you need if you have primary voltage of 600 3 phase and require 240 volt 1 phase?

A single phase 600 to 240 Volt transformer using two phases of the three phase primary.


Why does a 3 phase transformer produce an alternating flux while a 3 phase induction machine produces rotating flux when fed through 3 phase supply?

In a 3-ph transformer the flux also rotates round the 3 cores but you don't see anything moving.


How do you get a 380 volt 3 phase motor to run on a 220 volt 3 phase power source?

Use a transformer.


Can a teaser transformer can be use as 3 phase power supply?

yes