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.
Gastrointestinal effects are the most important adverse effects of PBZ therapy in horses. Clinical signs include loss of appetite, depression, colic, weight loss, ventral edema, hypoproteinemia (low blood protein), and diarrhea. Hemorrhages and ulcers may occur in the mouth, esophagus, stomach, cecum and right dorsal colon. These toxic effects are related to the dose of PBZ given.