Buck-Boost Transformers

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High efficiency Copper Transformers

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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.

Selection Chart for your buck-boost transformer

Using the PDF chart below, you can easily find which buck-boost transformer you need. From the top row of our PDF chart, choose the combination of line and load voltage closest to the one you will require. Then move down from the column you have chosen and go to the KVA or Amps rating that you require for your equipment to operate. If you cannot find the exact value of the load KVA or load amps, use the next higher rating. The model number can be found on the left hand column. Once you have determined the proper buck-boost transformer; the corresponding connection diagram can be found at the top of the page. Refer to page 4 of the PDF for dimensional information.

For more information about our buck-boost transformers or to speak to one of our representatives, please contact-us today.

PDF:
Buck-Boost Transformer