This part of GB 1094 applies to oil-immersed transformers. It illustrates the effect of transformer operation under different ambient temperature and load conditions on its lifetime.
GB/T 1094.7-2008 Referenced Document
ASTM D982 Method of Test for Organic Nitrogen in Paper and Paperboard
GB 1094.2-1996 Power transformers. Part 2: Temperature rise
GB 1094.5-2008 Power transformers.Part 5:Ability to withstand short circuit
GB/T 1094.7-2008 history
2008GB/T 1094.7-2008 Power transformers.Part 7: Loading guide for
oil-immersed power transformers
1994GB/T 15164-1994 Loading guide for oil-immersed power transformers
GB/T 1094.7-2008 Power transformers.Part 7: Loading guide for
oil-immersed power transformers has been changed from GB/T 15164-1994 Loading guide for oil-immersed power transformers.