Transcription of CHAPTER 15 DISTRIBUTION TRANSFORMERS
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CHAPTER 15 DISTRIBUTION TRANSFORMERS
13/07/06 11:43AM Page CHAPTER 15. DISTRIBUTION . TRANSFORMERS . The purpose of a DISTRIBUTION transformer is to reduce the primary voltage of the electric DISTRIBUTION system to the utilization voltage serving the customer. A DISTRIBUTION trans- former is a static device constructed with two or more windings used to transfer alternating- current electric power by electromagnetic induction from one circuit to another at the same frequency but with different values of voltage and current. Figure shows DISTRIBUTION TRANSFORMERS in stock at an electric utility company ser- vice building. The DISTRIBUTION TRANSFORMERS available for use for various applications, as shown, include pole -type (Figs. and ), pad-mounted (Fig. ), vault or network type (Fig. ), and submersible (Fig. ). The DISTRIBUTION transformer in Fig.
15.2 CHAPTER 15 FIGURE 15.2Typical pole-type dis- tribution transformer installation with the transformer bolted directly to the pole. The unit is equipped with a surge ...
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