The Basic Difference between the Power Transformer and Distribution Transformer

Along with this, the designing efficiency and the designing of the core, the types of losses occurring in the transformer, their operating conditions, and various applications are also important parameters.

The difference between the two transformers is given below:

BASIS OF DIFFERENCE	POWER TRANSFORMER	DISTRIBUTION TRANSFORMER
Type of network	It is used in transmission network of higher voltages	It is used in the distribution network for lower voltages.
Availability of ratings	400 kV, 200 kV, 110 kV , 66 kV, 33 kV.	11 Kv, 6.6 Kv, 3.3 Kv, 440 V,230 V
Maximum rating of usage	Power transformers are used for rating above 200 MVA	Distribution transformers are used for rating less than 200 MVA
Size	Larger in size as compared of distribution transformers	Smaller in size
Designed Efficiency	Designed for maximum efficiency of 100%	Designed for 50-70% efficiency
Efficiency formula	Efficiency is measured as the ratio of output to the input power	Here All Day Efficiency is considered. It is the ratio of output in kilowatt hour (kWh) or watt hour (Wh) to the input in kWh or Wh of a transformer over 24 hours.
Application	Used in generating stations and transmission substations	Used in distribution stations, also for industrial and domestic purposes
Losses	Copper and iron losses take place throughout the day	Iron losses take place for 24 hours and copper losses are based on load cycle
Load fluctuation	In power transformer the load fluctuations are very less	Load fluctuations are very high
Operating condition	Always operated at full load	Operated at load less than full load as load cycle fluctuates
Considering time	It is independent of time	It is time dependent
Flux density	In power transformer flux density is higher	As compared to power transformer the flux density is lower in distribution transformer
Designing of the core	Designed to utilize the core for maximum and will operate near to the saturation point of the B-H curve, which helps to bring down the mass of core	As compared to power transformer the flux density is lower in distribution transformer
Usage	Used to step up and step down voltages	Used as an end user connectivity

View the key difference between power transformer and distribution transformer with Yuebian transformers or just scrow down to learn more.