BS EN 61558-2-9-2011 电力变压器,电抗器,供电机组及其组合的安全性.Ⅲ类手用钨丝灯变压器和供电机组的详细要求和试验

标准号：BS EN 61558-2-9-2011
中文标准名称：电力变压器,电抗器,供电机组及其组合的安全性.Ⅲ类手用钨丝灯变压器和供电机组的详细要求和试验
英文标准名称：Safety of transformers, reactors, power supply units and combinations thereof. Particular requirements and tests for transformers and power supply units for class III handlamps for tungsten filament lamps
标准类型：K41
发布日期：2011/3/30 12:00:00
实施日期：2011/3/30 12:00:00
中国标准分类号：K41
国际标准分类号：29.180
适用范围：Replacement:This part of IEC 61558 deals with the safety of transformers for class III handlamps fortungsten filament lamps and power supply units incorporating transformers for class IIIhandlamps for tungsten filament lamps. Transformers incorporating electronic circuitsare also covered by this standard.NOTE 1 Safety includes electrical, thermal, mechanical and chemical aspects.Unless otherwise specified, from here onward, the term transformer covers transformers forclass III handlamps for tungsten filament lamps and power supply units incorporatingtransformers for class III handlamps for tungsten filament lamps.This part is applicable to stationary or portable single-phase air-cooled (natural or forced)independent or associated dry-type transformers. The windings may be encapsulated ornon-encapsulated.This standard is applicable to transformers and power supply (linear) with internaloperational frequencies not exceeding 500 Hz.This standard used in combination with Part 2-16 for switch mode power supply (SMPS)units is also applicable to power supplies with internal operational frequencies higher than500 Hz. Where the two requirements are in conflict, the most severe take precedence.The rated supply voltage does not exceed 1 000 V a.c., and the rated supply frequencyand the internal operational frequencies do not exceed 500 Hz.Transformers for class III handlamps for tungsten filament lamps have the followingadditional characteristics:– the no-load output voltage and the rated output voltage do not exceed 50 V a.c. or120 V ripple-free d.c.;– there is only a small difference between the no-load voltage and the rated outputvoltage.The rated output does not exceed:– 10 kVA.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 2 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 3 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.