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Differences between Conventional and CSP Pole Mount Transformers

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If you have ever worked with pole mount transformers, you have most likely run into both CSP and conventional types. Have you wondered what each name means and how the two types differ from each other? CSP, or Completely Self Protected transformers contain several safeguards to avoid issues that would cause overloading or damage to the transformer. Conventional transformers do not have any of these features which usually means they will need to be attached to a cut out switch. The most recognizable component of a CSP transformer is the lightning arrestor. The arrestor protects against power surges caused by switching, lightning, or other high voltage sources. The lightning arrestor provides a path to ground to divert the high voltage surge rather than it passing through the transformer internals. Another component CSP transformers are fitted with is the current sensing weak link on the high voltage side. If any part of the power distribution system fails, and too much current is being d…

The Reconditioning and Rewinding Process

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There are many reasons why you may need a new transformer. This could be due to a failing unit or increased power demands. UTB understands that the task of obtaining a new transformer can be daunting. Lead times on new units can occasionally be several months out. Rewinding or reconditioning a transformer can solve most of your issues. This can be beneficial to you financially and save you time in the end. When a transformer is designated to be rewound or reconditioned, it is initially brought into the shop for a visual inspection and tested for any electrical issues. The bushings, radiators, gauges, cabinets and main tank are all checked for any damage that requires immediate attention and repair. All electrical and mechanical components are then tested for proper operation. The next step of the process is to cut the top off the transformer and pull out the core and coils. Once the internals of the transformer are removed, they are inspected for defects. The decision is then made on wh…