Bushing Repair vs. Replacement
There are 2 options for defective bushings: replace with new or repair existing. Typical bushing repairs include a regasket bushing or recore bushing.
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Written by Hubbell Power Systems on August 31, 2017
There are two options for defective bushings: (1) Replace with new bushings or (2) Repair existing bushings. Repairing a defective bushing is often more appealing financially and timewise. Typical bushing repairs include a regasket bushing or recore bushing to the original. Regasket involves replacing the seal components and this is only done if there are no defects in the original core. This is a typical repair if the bushing received minor external damage. To recore a bushing involves replacing the original core when the bushing is at an advanced age or if there are defects in the original core.
The advantages to bushing repair include:
We can repair your bushing, even if it's not manufactured by us. This will get your substation up and running quickly. The bushing will not be seismically certified after the repair but it will operate efficiently and have the same warranty as a new bushing. In order to have your bushing seismically certified, a utility will have to order a new bushing which requires 6-8 months manufacturing. Therefore, we propose if you have a bushing down, get it repaired so you can operate and then we'll order you a new seismically certified bushing to replace so you are covered in the event of a natural disaster.
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