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Substation Equipment: Bus Support Insulators

Bus Support Insulators
Bus support insulators are porcelain or fiberglass insulators that serve to isolate the bus bar switches and other support structures and to prevent leakage current from flowing through the structure or to ground. These insulators are similar in function to other insulators used in substations and transmission poles and towers.

Figure 1. Bus support insulators
Figure 1. Bus support insulators
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