For dry-type transformers having a 220 [degrees] C insulating system and a winding hot-spot temperature of 220 [degrees] C, and with no unusual operating conditions present, the 20-yr life expectancy is a reasonable time frame.he 80 [degrees] C transformer requires operation at 75% or more of full load for a 2-yr payback, and at 100% load to payback in 1 yr over the 150 [degrees] C transformer.
Exposure to arsenic through drinking water is a great threat to human health. Arsenic is a carcinogen and its consumption can negatively affect the gastrointestinal tract and cardiac, vascular and central nervous systems.
1 Grapes, Raisins, Prunes â Kidney failure, as little as a single serving of grapes or raisins can kill a dog. 2  Persimmons Seeds â Can cause intestinal obstruction and enteritis. 3  Salt â Excessive intake can cause kidney problems. 4  Tomatoes â Tomatoes can cause tremors and heart arrhythmias.