The transformer inspection standards mainly include national standards GB/T 1094 series, GB50150-2016, etc., covering core items such as insulation performance, electrical strength, oil quality testing, temperature rise testing, etc. The specific testing standards need to be selected according to the type of transformer (such as oil immersed, dry-type) and the purpose.

1. GB/T 1094 series: General standards for power transformers, including general principles (GB/T 1094.1), temperature rise (GB/T 1094.2), short-circuit capability (GB/T 1094.5) and other sub items. ‌‌

2. GB50150-2016: Code for Hand over Test of Power Equipment, specifying key indicators such as withstand voltage test and insulation resistance. ‌‌

3. GB/T 6451: Technical parameter requirements for oil immersed transformers. ‌‌