Question

Please provide me with the advantages of a three phase systems over other polyphase systems (NOT single phase systems). Please provide me with clear points that have proper emphasis on each point, and make sure the answer is professional.

Answer 1

Answer :- The advantages of three phase over poly phase is-

1.) The amount of conducting material required to transfer a given amount of power is minimum in three phase systems.

2.) The instantaneous power in a three phase system never falls to zero resulting in smoother and better operating characteristics of load.

3.) Three phase supply isrequired by three phase induction motors which are widely used in industry because of their ruggedness, longer life, higher torque, low initial and maintenance costs.

4.) Domestic as well as industrial and commercial power can be supplied from same three phase distribution system.

5.) Three phase system has better voltage regulation.

6.) For a given size of machine, the power generated by a three phase alternator is higher.