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Transformers

GSU & Station Transformers

We specialize in transformers over 300 KVA. We offer them in a variety of conditions from New Surplus, Remanufactured, Reconditioned, and Used. We work in conjuction with numerous repair facilities to offer the best solutions to our customers.

We work with repair facilities to either recondition a remanufacture these transformers. Our present capabilities with respect to these transformers for remanufacture are under 100 MVA three phase units. Units larger than this we catalogue and database for sale either as is or tested with a warranty. Transformers are also the one piece of equipment on the socondary market that there is a plethora of new surplus units. These are units that for one reason or another were never installed or energized and have not carried a load.

Padmount Transformers (over 250 KVA)

We offer a variety of new, new surplus, and reconditioned padmounts we work with several vendors to deliver the most economical solution for the job. The designs we can offer range from simple live front, to dead front, loop feed with load break switches.

Remanufactured Transformers

DESIGN, WINDING, & ASSEMBLY
It is our standard practice to incorporate the following procedures when rewinding power transformers:

• CORE The existing coils are removed from the core and the core is removed from the structure, completely reinsulating the core from the structure. At this point the only components that are recycled are the core steel and transformer tank.

• TANK The tank is pressure tested to ensure integrity and any areas of concern are either machined (in the case of gasket surfaces) or welded.

• COILS All coils will be balanced to minimize short circuit forces. A computer short circuit analysis of the new design will be made to determine short circuit forces and stresses the coils will receive. (NOTE: See Short Circuit Analysis). As required, steel clamping structure, tip rods, and jack bolts will be modified as needed to meet forces. At a minimum, high density insulation material will be used for coil forms, spacers, etc. All coils will have thermally upgraded paper insulation and will be wound utilizing techniques equivalent to the latest factory procedures.

• GASKETING New gaskets will be installed to seal all accessories, bushings, and other devices attached to the transformer both oil to oil and oil to air. The interior of the tank, the radiators, and the core structure will be flushed and cleaned.

• INSULATION The original insulating material used between the core and the tank will be replaced with new insulation.

GSU Transformers Sub Station Transformers Padmount Transformers Auxiliary Transformers Reconditioned Transformers Remanufactured Transformers Surplus Transformers Used Transformers