This standard specifies the classification, requirements, inspection methods, inspection rules, markings, packaging, transportation, and storage requirements for power and lighting transformers (hereinafter referred to as transformers) used on offshore platforms. This standard applies to the design, manufacturing, and acceptance of dry-type transformers installed on offshore platforms or in offshore engineering, with voltage levels of 35 kV and below, frequency of 50 Hz or 60 Hz, and rated capacity of 20000 kVA and below. The following normative references are essential for the application of this document. For dated references, only the dated version applies to this document. For undated references, the latest version (including all modification orders) applies to this document. GB 1094.1-1996 · Power Transformers - Part 1: General (IEC 60076-1:1993, MOD) GB1094.3-2003 Power Transformers: Part 3: Insulation Levels Insulation tests and external insulation air gaps (IEC 60076-3:2000, MOD) GB 1094.5-2008 Power transformers - Part 5: Ability to withstand short circuits (IEC 60076-5:2006, MOD) GB 1094.10-2003 Power transformers - Part 10: Determination of sound levels (IEC 60076-10:2001, MOD) GB1094.11-2007 Power transformers - Part 11: Dry type transformers (IEC 60076-11:2004, MOD) GB 2423.4-2008 Basic Environmental Testing Regulations for Electrical and Electronic Products, Test Db: Alternating Damp Heat Test Method (IEC 60068-2-30:2005, IDT) GB2423.17-2008 Basic Environmental Testing Regulations for Electrical and Electronic Products, Test Ka: Salt Spray Test Method (IEC 60068-2-11:1981, IDT) GB 2900.1 Basic Terminology for Electrical Terminology GB 2900.15 Transformer, Transformer, Voltage Regulator, Reactor
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