1 Scope
This standard specifies terms and definitions, performance parameters, technical requirements, test items, marking, lifting, transportation and storage of single-phase oil-immersed distribution transformer.
This standard is applicable to the single-phase oil-immersed distribution transformer (hereinafter referred to as transformer) with voltage class of 6kV, 10kV, rated capacity of 5kVA~160kVA and rated frequency of 50Hz.
2 Normative References
The following documents are indispensable for the application of this document. For dated references, only the dated edition is applicable to this document. For undated references, the latest edition (including all the amendments) applies.
GB 1094.1 Power Transformers - Part 1: General
GB 1094.2 Power Transformers - Part 2: Temperature Rise for Liquid-immersed Transformers
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 1094.7 Power Transformers - Part 7: Loading Guide for Oil-immersed Power Transformers
GB/T 1094.10 Power Transformers - Part 10: Determination of Sound Levels
GB/T 2900.15 Electrotechnical Terminology - Transformer, Instrument Transformer, Voltage Regulator and Reactor
3 Terms and Definitions
For the purposes of this document, the terms and definitions given in GB 1094.1 and GB/T 2900.15 apply.
4 Performance Parameters
Performance parameters such as rated capacity, voltage combination, tapping range, connection symbol, no-load loss, load loss, no-load current, short-circuit impedance and sound power level shall be in accordance with those specified in Table 1.
Foreword i
1 Scope
2 Normative References
3 Terms and Definitions
4 Performance Parameters
5 Technical Requirements
5.1 General Requirements
5.2 Safety Protection Devices
5.3 Oil Protection Device
5.4 Oil Temperature Measuring Device
5.5 Technical Requirements for Transformer Oil Tank and Its Accessories
6 Test Items
7 Marking, Lifting, Transportation and Storage
Figure 1 Position of Support at Tank Bottom (Facing to the Long Shaft Direction)
Figure 2 Schematic Diagram for Support of Cylinder-Type Tank
Table 1 Performance Parameters
