IEC 60044-1 Edition 1.2-2003 仪表用变压器.第1部分:电流互感器

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                   【英文标准名称】:     Instrument transformers - Part 1: Current transformers            【原文标准名称】:     仪表用变压器.第1部分:电流互感器            【标准号】:     IEC 60044-1 Edition 1.2-2003            【标准状态】:     现行            【国别】:     国际            【发布日期】:     2003-02    【实施或试行日期】: 【发布单位】: 国际电工委员会(IEC)【起草单位】: IEC/TC 38【标准类型】: ()【标准水平】: ()【中文主题词】: 常规检验;定义;规范(验收);保护设备;仪表用变压器;合格试验;电流互感器;变压器;试验;作标记;电压互感器;电气工程;额定值【英文主题词】: 【摘要】: This part of IEC 60044 applies to newly manufactured current transformers for use with electrical measuring instruments and electrical protective devices at frequencies from 15 Hz to 100 Hz.Although the requirements relate basically to transformers with separate windings, they are also applicable, where appropriate, to autotransformers.Clause 11 covers the requirements and tests, in addition to those in clauses 3 to 10, that are necessary for current transformers for use with electrical measuring instruments.Clause 12 covers the requirements and tests, in addition to those in clauses 3 to 10, that are necessary for current transformers for use with electrical protective relays, and in particular for forms of protection in which the prime requirement is the maintenance of accuracy up to several times the rated current.For certain protective systems, where the current transformer characteristics are dependant on the overall design of the protective equipment (for example high-speed balanced systems and earth-fault protection in resonant earthed networks), additional requirements are given in clause 13 for class PR transformers and in clause 14 for class PX transformers.Clause 13 covers the requirements and tests in addition to those in clauses 3 to 10 that are necessary for current transformers for use with electrical protective relays, and in particular for forms of protection in which the prime requirement is the absence of remanent flux.Clause 14 covers the requirements and tests in addition to those in clauses 3 to 10 that are necessary for current transformers for use with electrical protective relays, and in particular for forms of protection for which knowledge of the transformer's secondary excitation characteristic, secondary winding resistance, secondary burden resistance and turns ratio is sufficient to assess its performance in relation to the protective relay system with which it is to be used.Current transformers intended for both measurement and protection shall comply with all the clauses of this standard.【中国标准分类号】: L17【国际标准分类号】: 17_220_20【页数】: 57P;A4【正文语种】: 英语         
         

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