This part of GB 1094 is applicable to equipment with a maximum voltage of 40.5kV and below, And at least one winding is more reliable when the voltage is higher than 1.1kV - Multiphase transformers with rated capacity less than 15kVA; - Transformer; - Starting transformer; - Test transformer; - Locomotive traction transformer; - Flameproof and mining transformer; - Welding transformer; - Voltage regulating transformer; - Small power transformer with a focus on safety considerations. When there are no corresponding standards for the above transformers or other specialized transformers, this part can be fully or partially applied. 2 Normative reference documents The clauses in the following documents are referred to in GB The reference in this part of 1094 becomes the provision of this part. For dated reference documents, all subsequent amendments (excluding corrected content) or revisions do not apply to this section. However, parties to agreements based on this section are encouraged to study whether the latest versions of these documents can be used. For undated references, the latest version applies to this section. GB 311.1 Insulation Coordination of High Voltage Transmission and Transformation Equipment (GB 311.1-1997, neq IEC 60071-1:1993) GB 1094.1 Power Transformers: Part 1: General (GB 1094.1-1996, eqv 1EC 60076-1:1993) GB 1094.2 Power Transformers: Part 2: Temperature Rise (GB 1094.2-1996.eqv 1EC 60076-2; 1993) GB 1094.3 Power Transformers: Part 3: Insulation Levels, Insulation tests and external insulation air gaps (GB 1094.3-2003, IEC 60076-3; 2000, MOD) GB 1094.5 Power transformers: Part 5: Ability to withstand short circuits (GB 1094.5-2003, IEC 60076-5; 2000. MOD) GB/T 1094.10 Power transformers: Part 10: Sound level measurement (GB/T 1094.10-2003, IEC 60076-10; 2001. MOD) GB/T 2900.15 Electrotechnical terminology, transformers, transformers Voltage Regulators and Reactors (GB/T 2900.15-1997, neqIEC 60050-421:1990, EC 60050-321:1986) GB 4208 Degrees of Protection Provided by Enclosures (IP Code) (GB 4208-1993. eqv IEC 60529; 1989) GB/T 7354 Partial Discharge Measurement (GB/T 7354-2003, EC 60270:2000, IDT) GB/T 11021 Thermal Evaluation and Classification of Electrical Insulation (GB/T 11021-1989, eqv 1EC 60085; 1984) GB/T 17211-1998 Load Guidelines for Dry Power Transformers (eqv lEC 60905:1987)
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