Why Use Buck-Boost Transformers?
The advantages of using a buck-boost transformer over an equivalent standard isolation transformer are as follows: Advantages 1) Used in a variety of applications 2) Inexpensive 3) Smaller and lighter 4) More efficient 5) 5-10 times increase in kVA Disadvantages 1) No circuit isolation 2) Cannot create a neutral 3) KVA and voltages do not match whats on the nameplate kVA and voltages. Buck-Boost Application Buck-boost transformers offer an economical solution to the adjustment of line voltages that are slightly above or below normal. When a buck-boost transformer is connected as an autotransformer, only a portion of the load kVA is actually transformed. The majority of the load kVA is passed directly through to the source. For this reason a buck-boost transformer may be used to supply a much larger load kVA than is indicated on the nameplate. Buck-boost transformers can be used to adjust stable voltages only. Fluctuating line voltages should be regulated with a Line Voltage Conditioner
