標準號：BS EN 61558-2-4-2009
中文標準名稱：電源電壓不超過1100 V變壓器,電抗器,電源和類似產品的安全性.絕緣變壓器及與絕緣變壓器結合的電源的詳細要求和試驗
英文標準名稱：Safety of transformers, reactors,power supply units and similar products for supply voltages up to 1100 V. Particular requirements and tests for isolating transformers and power supply units incorporating isolating transformers
標準類型：K41
發布日期：2009/9/30 12:00:00
實施日期：2009/9/30 12:00:00
中國標準分類號：K41
國際標準分類號：29.180
引用標準：IEC 61558-1-2005
適用范圍：Replacement:This part of IEC 61558 deals with the safety of isolating transformers for generalapplications and power supply units incorporating isolating transformers for generalapplications. Transformers incorporating electronic circuits are also covered by thisstandard.NOTE 1 Safety includes electrical, thermal and mechanical aspects.Unless otherwise specified, from here onward, the term transformer covers isolatingtransformers for general applications and power supply units incorporating isolatingtransformers for general applications.NOTE 2 For power supply units (linear) this part is applicable. For switch mode power supply units, IEC 61558-2-16 isapplicable together with this part.This part is applicable to stationary or portable, single-phase or polyphase, air-cooled(natural or forced) independent or associated dry- type transformers. The windings may beencapsulated or non-encapsulated.The rated supply voltage does not exceed 1 100 V a.c., and the rated supply frequencyand the internal operating frequencies do not exceed 500 Hz.The rated output does not exceed:– 25 kVA for single-phase transformers;– 40 kVA for polyphase transformers.This part is applicable to transformers without limitation of the rated output subject to anagreement between the purchaser and the manufacturer.NOTE 3 Transformers intended to supply distribution networks are not included in the scope.The no-load output voltage or the rated output voltage does exceed 50 V a.c. or 120 Vripple-free d.c., and where applicable, does not exceed 500 V a.c. or 708 V ripple-free d.c.The no-load output voltage and the rated output voltage may be up to 1 000 V a.c. or1 415 V ripple-free d.c. for special applications.This part is not applicable to external circuits and their components intended to be connectedto the input terminals and output terminals of the transformers.Transformers covered by this part are used in applications where double or reinforcedinsulation between circuits is required by the installation rules or by the end productstandard.NOTE 4 Attention is drawn to the following:- for transformers intended to be used in vehicles, on board ships, and aircraft, additional requirements (fromother applicable standards, national rules, etc.) may be necessary;- measures to protect the enclosure and the components inside the enclosure against external influences suchas fungus, vermin, termites, solar-radiation, and icing should also be considered;- the different conditions for transportation, storage, and operation of the transformers should also beconsidered;- additional requirements in accordance with other appropriate standards and national rules may be applicable totransformers intended for use in special environments.NOTE 5 Future technological development of transformers may necessitate a need to increase the upper limit ofthe frequencies, until then this part may be used as a guidance document.