Federal Pacific SB24N.500F FT2026 - Buck Boost Transformer - 240x480 Pri - 24/48 Sec - 0.5 kVA - 60Hz - 1 Phase - NEMA 3R Encapsulated
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The Type FB Insulating and Buck-Boost Transformer has four separate windings, two windings in the primary and two windings in the secondary. The unit is designed for use as an isolating transformer or as an auto-transformer. As an autotransformer the unit can be connected to Buck (decrease) or Boost (increase) a supply voltage. When connected in either the Buck or Boost mode, the unit is no longer an isolating transformer but is an autotransformer. Autotransformers are more economical and physically smaller than equivalent two-winging transformers designed to carry the same load. They will perform the same function as two-winding transformers with the exception of isolating two circuits. Since autotransformers may transmit line disturbances directly, they may be prohibited in some areas by local building codes. Before applying them, care should be taken to assure they are acceptable according to local code.