This standard specifies the terms and definitions, product models, performance parameters, technical requirements, test items, signs, lifting, packaging, transportation and storage of oil-immersed amorphous alloy core distribution transformers. This standard is applicable to: single-phase oil-immersed non-excitation step-down amorphous alloy core distribution transformers with voltage levels of 6kV, 10kV, rated frequency of 50Hz, and rated capacity of 5kVA~160kVA; voltage levels of 6kV, 10kV, and 20kV A three-phase oil-immersed non-excitation step-down amorphous alloy core distribution transformer with a rated frequency of 50Hz and a rated capacity of 30kVA~2500kVA; a voltage class of 35kV with a rated frequency of 50Hz and a rated capacity of 50kVA~2500kVA Three-phase oil-immersed non-excitation voltage regulating amorphous alloy core distribution transformer.
GB/T 25446-2010 Referenced Document
GB 1094.1 Power transformers.Part 1: General*, 2013-12-17 Update
GB 1094.2 Power transformers.Part 2:Temperature rise for liquid-immersed transformers*, 2013-12-17 Update
GB 1094.3 Power transformers Part 3: Insulation levels,dielectric tests and external clearances in air
GB 1094.5 Power transformers.Part 5:Ability to withstand short circuit
GB/T 1094.10 Power transformers— Part 10:Determination of sound levels*, 2022-10-14 Update
GB/T 1094.7 Power transformers.Part 7: Loading guide for oil-immersed power transformers
GB/T 2900.15-1997 Electrotechnical terminology. Transformer, instrument transformer, voltage regulator and reactor
JB/T 3837 Method for compiling standard models of transformer products*, 2016-10-22 Update
GB/T 25446-2010 history
2010GB/T 25446-2010 Specification and technical requirements for oil-immersed amorphous alloy core distribution transformers