SINGLE-PHASE CONNECTIONS


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SINGLE-PHASE CONNECTIONS
SINGLE-PHASE CONNECTIONS75. Connections for standard distribution transformers are shown in Figs. 5.45 and 5.46. Distribution transformers of medium and small capacity are almost invariably arranged with two secondary coils, which can be connected in series or parallel with each other so that the same transformer can be used to supply either of two different secondary voltages or a three-wire system. In transformers of the 120/240-V type their secondary windings can be so connected as to deliver 120 or 240 V or for a 120/240-V three-wire circuit. The connections of the secondary coils are made, either by splicing the …
Citation
Terrell Croft; Frederic P. Hartwell; Wilford I. Summers: American Electricians' Handbook, Sixteenth Edition. SINGLE-PHASE CONNECTIONS, Chapter (McGraw-Hill Professional, 2013), AccessEngineering Export