Has anyone been involved in the inspection/repair of a Load Tap Changer manufactured by a Company called ASP out of France? I have a customer with a National Industri furnace transformer that has a tap changer manuafactured by them and can not find any information on the company? Manufacture...
Hello!
I have a customer with a 34.5 KV delta system feeding a Electric Arc Furnace (EAF). The facility asked me to meter the system due to past equipment failures. (blown fuses, damaged PACS breaker).
They have three PT's in the metering vault, single terminal, rated 20,125V, 300:1. I...
I have a customer with a 60 MVA National Industri unit that had circulating current problems that caused two of the top core bolts to be eroded away and break. All 8 core bolts were replaced and positively grounded. The unit was put into service in June-07 and is once again gassing at a high...
We have a 15 KV system with insulated bus (powder bed epoxy-60 mils) and G10 glass epoxy supports with silicone rubber inserts. The phase to phase spacing is 5-3/8” and the phase to ground is 3-1/2”. This was installed around Sept./Oct,2001!! We now see white powder forming around the support...
