Substations on the move

In this post-War (September 1949) article, R.W. Coddington writes about the use of portable substations in the Bonneville Power Administration (BPA) service territory. These substations on wheels were used for standby service at substations where peak loads were exceeding the design capacity of the permanent substation, for spares to replace a failed transformer, for service at government construction projects where power is needed for a short term, or for temporary use at new substation sites where permanent equipment has not yet been installed. Most of these substations were rated at 3,000 to 6,000 kva, according to the article.

Substations on the move

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