On several sites our customers are finding line voltage that is at the borderline of the manufacture requirements.

In these cases, using a "Buck Boost" transformer, as a solution.

 

Why Use Buck-Boost transformers?

 

The advantages of using a buck-boost transformer over an equivalent standard isolation transformer are:

 

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 what’s 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 kVA load than is indicated on the nameplate.

Buck-boost transformers can be used to adjust stable voltages only.

 

We should still be looking at installing an over/ under voltage and surge protection device as well as a buck boost transformer.

RSH-50-VRMDC

 

There is an easy-to-use calculator to assist in product selection:

 

Buck Boost transformer selector

 

Select your required amperage range for the equipment:

 

 

The results can be saved as a PDF or printed: (Device wiring diagram included in the page)