SD Myers specializes in this type of work. I have used them and had very good results and they did it while the transformer was online. They have self contained units that do a combination filtration/distallation of the oil to remove sludge and any condensation
What standards govern the testing of a horizontal, draw-out type, 2000A, 35kv, indoor, vaccum circuit breaker used in metal-clad switchgear? What specific production testing data should I have received from the manufacturer? What field tests should I need to see performed on these breakers?
