Difference between distribution and power transformers | comparison of Distribution transformer and Power transformer

Sr. No.	Points For Comparison	Distribution Transformer	Power Transformer
1.	Definition	The Transformer upto 500KVA are used to step-down voltage to desired level of end-user consumer in domestic and industrial purpose is known as distribution transformer.	The transformer above 500 KVA are used in sub-stations and generating stations, mostly in transmission network to step-up and step-down voltage this type of transformers are called as power transformer.
2.	KVA Rating	Upto 500 KVA	Above 500 KVA upto 500 MVA or more.
3.	Voltage ratings	11 kV,6.6 kV,3.3 kV,440 V,230 V	400 kV,200 kV,110 kV,66 kV,33 kV
4.	Operating time	All the 24 hours of the day.	Operating during the load period and disconnected during light load.
5.	Size	Smaller in size	Larger in size as compared with distribution transformer.
6.	Fluctuation of load	In this load fluctuations are very high.	In this the load fluctuations are very less.
7.	Operating condition	Operated at load less than full load as load cycle fluctuations.	Always operated at full load.
8.	Flux density	It is normally upto 1.5 tesla.	It is normally upto 1.71 tesla.
9.	Cooling	Generally natural oil cooling system is used.	Mostly forced oil cooling system is used.
10.	Application	Used in distribution substations also for industrial and domestic purposes.	Used in generating stations transmission substations.