BUCK BOOST TRANSFORMER
 
     
 


Buck-boost transformers are small single phase transformers designed to reduce (buck), or raise (boost) line voltage. The most common example is boosting 208 volts to 230 volts for motor load operation. Buck-boosts are standard single phase transformers with primary voltages of 120/240, and secondary voltages of 12/24, and/or 16/32. They are available in sizes ranging from 50VA lo 5KVA.


 
 
 
   

Application of buck-boost transformers

When supply voltage is constantly too high or too low, the equipment fails to operate at maximum efficiency. Anytime you have a lower than standard voltage, equipment damage or failure can result. Efficient operation of electrical equipment requires that line voltage be at or near the nameplate rating of the equipment. In order to match line voltage with equipment voltage, buck-boost transformers provide the most convenient and least expensive method. Do not use buck-boost transformers to solve a fluctuating voltage problem.
 
     

Steps for selection the proper buck-boost transformer

  • Line Voltage
    Determine the voltage that you want to buck (decrease) or boost (increase). This can be found by measuring the supply line voltage with a voltmeter.
  • Load Voltage
    Determine the voltage at which your equipment is designed to operate. This is listed on the nameplate of the load equipment.
  • Load KVA or load AMPS
    You do not need to know both - one or the other is sufficient. This information usually can be found on the nameplate of your equipment.
  • Frequency
    The supply line frequency must be the same as the frequency of the equipment to be operated either 50 or 60 cycles.