Apr. 01, 2020
Power transformers are utilized in the transmission network of greater voltages for step-up as well as step down the application (400 kV, 200 kV, 110 kV, 66 kV, 33kV) and also are generally rated over 200MVA.
Distribution transformers are utilized for reduced voltage circulation networks as a means to end-user connectivity. (11kV, 6.6 kV, 3.3 kV, 440V, 230V) and are typically ranked less than 200 MVA.
Transformer Size/ Insulation Degree:
The power transformer is made use of for the transmission purpose at heavy tons, a high voltage higher than 33 kV & 100% effectiveness. It additionally has a huge in dimension as a contrast to circulation transformer, it used in generating terminal as well as Transmission substation.high insulation level.
The circulation transformer is utilized for the distribution of electric energy at low voltage as less than 33KV in commercial purposes and 440v-220v in the residential objective. It works at reduced efficiency at 50-70%, little size, simple in installment, having low magnetic losses & it is not constantly completely loaded.
Iron Losses and Copper Losses
Power Transformers are used in the Transmission network so they do not direct link to the customers, so lots of fluctuations are very much less. These are packed completely during 24 human resources a day, so Cu losses & Fe losses happen throughout the day the particular weight i.e. (iron weight)/( cu weight) is really less.
The average lots are nearer to full packed or complete lots and also these are made as though an optimum performance at full tons problem. These are independent of time so in determining the efficiency only a power basis is enough.
Distribution transformers are made use of in Circulation Network so straight attached to the customer so tons changes are extremely high. these are not filled totally in all time so iron losses take place 24hr a day and also cu losses take place based upon load cycle. A certain weight is more i.e. (iron weight)/( cu weight). average loads are about only 75% of complete lots as well as these are made as though max performance occurs at 75% of full tons.
As these are time-dependent all the time effectiveness is defined in order to compute the performance.
The above information is provided by the distribution transformer substation supplier.
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