Installed in the power of communication technology in the construction of energy-saving transformer capacity selection, the selected transformer capacity can not be too small nor too big , if you choose the transformer capacity is too small , then the motor is slightly overloaded electrical equipment or capacity increase slightly when Since the transformer capacity is too small , can not afford so much current and voltage transformers will lead to burning or excessive heat. If you choose the transformer capacity is too large , it will lead to electrical equipment can not make full use of the capacity , which would result in the loss of power resources in large part, eventually leading to the loss of energy . When the transformer capacities should first calculate the load capacity of the transformer should be selected according to the calculated value of the load . For single transformer steady load , load rate generally eighty-five% or so , for those seasonal fluctuations or diurnal fluctuations transformers, and these are load power supply transformer transformer , transformer capacity to be a reasonable choice , transformers number of units should also be a reasonable choice , but also in the peak time for proper and timely transformer overload operation. For those short-term load power transformer , must make full use of their overload.