Transformer foundation completed in five days using helical anchors

Article Abstract:

Illinois Power Co. was able to complete its upgrade from their 12.8 MVA single-phase transformers to its 93 MVA 3-phase transformers by using helical anchors in the construction of the transformer foundation. The use of helical anchors reduced construction time significantly.

Methods, Design and construction, Power transmission, Power transmission (Mechanical), Transformers, Electric transformers, Anchorage (Structural engineering)

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Surge-suppression resistors make comeback

Article Abstract:

Bonneville Power Administration (BPA) convinced Pacific Air Switch Corp. to build surge-suppression resistors for 500-kV transmission systems. Pacific Air helped BPA avoid having to redesign six substations using circuit breakers that would have cost a minimum of $3 million.

Current-Carrying Wiring Device Manufacturing, Current-carrying wiring devices, Electronic resistors, Resistors, Electronic Resistor Manufacturing, Power Surge Arrestors, Electrical equipment and supplies industry, Electric equipment industry, Contracts, Surge suppressors, United States. Bonneville Power Administration, Pacific Air Switch Corp.

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