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  • IEC TS 61394-1997 - 中外标准 - - 1997/12 - 作废
    Applies to products designed for corrosion protection of bare electrical overhead conductors in any combination of: - wires of aluminium and aluminium alloy. - wires of steel coated with zinc (galvanized) and zinc alloy with aluminium. - wires of steel coated with aluminium.
  • DL/T 624-1997 - 中外标准 - - 1997/10 - 作废
    继电??试验装置技术条件
  • IEC 61284-1997 - 中外标准 - - 1997/9 - 现行
    Applies to fittings for overhead lines of nominal voltage above 45 kV. It may also be applied to fittings for overhead lines of lower nominal voltage and to similar fittings for substations. The contents of the corrigendum of September 1998 have been included in this copy.
    配件电气工程阀门无线电干扰测量电缆试验规范(验收)架空线接地线DefinitionsEarth wiresElectric cablesElectrical engineeringFittingsHigh-voltage linesNon-destructive testingOverhead power linesPartial discharge testsRadio interference measurementsRadio interference voltageSpecification (approval)Supply mainsTestingThermal-cycling testsValves
  • IEC TS 61774-1997 - 中外标准 - - 1997/8 - 现行
    This Technical Report (type 2) aims at providing advice on methods for developing climatic load databases. This is necessary for the implementation of IEC 60826 which provides the framework for National Standards on overhead line design.
  • DL/T 5070-1997 - 中外标准 - - 1997/6 - 作废
    水轮机金属蜗壳安装焊接工艺导则
  • IEC 61660-2-1997 - 中外标准 - - 1997/6 - 现行
    Describes a method for calculation of the mechanical and thermal effects on rigid conductors caused by short-circuit currents in d.c. auxilliary installations in power plants and substations, as described in IEC 61660-1. Provides a method which has wide application and which gives results of sufficient accuracy. The calculation method is based on substitute functions, which cause approximately the same maximum stresses in the conductors and the same forces on the supports as the actual electromagnetic force.
    短路电流直流装置变电所开关设备发电站计算方法定义电气工程数学计算CurrentsDefinitionsDirect currentDirect current installationsEffectsElectric power stationsElectrical engineeringElectromagneticElectromagnetismMathematical calculationsMethods of calculationPlantShort circuitsShort-circuit currentsSubstationSwitchgearsSymbolsThermal propertiesThermics
  • IEC 61660-1-1997 - 中外标准 - - 1997/6 - 现行
    Describes method for calculating short-circuit currents in d.c. auxilliary systems in power plants and substations, which can be equipped with the following equipment, acting as short-circuit current sources: - rectifiers in three-phase a.c. bridge connection for 50 Hz; - stationary lead-acid batteries; - smoothing capacitors; - d.c. motors with independent excitation Provides a generally applicable method of calculation which produces results of sufficient accuracy on the conservative side. The contents of the corrigenda of February 1999 and March 2000 have been included in this copy.
    数学计算电气工程定义计算方法开关设备发电站变电所直流装置短路电流Bridge circuitsCircuitsDefinitionsDirect currentDirect current installationsElectric convertorsElectric power networksElectric power stationsElectrical engineeringFault currentsMathematical calculationsMethods of calculationPlantShort circuit impedanceShort circuitsShort-circuit currentsSubstationSwitchgearsSymbolsThree-phase
  • BS EN 60570-1997 - 中外标准 - - 1997/5 - 作废
  • DL/T 620-1997 - 中外标准 - - 1997/4 - 现行
    本标准规定了标称电压为 3kV~500kV 交流系统中电气装置过电压保护的方法和要求;提供了相对地、相间绝缘耐受电压或平均( 50 % )放电电压的选择程序,并给出了电气设备通常选用的耐受电压和架空送电线路与高压配电装置的绝缘子、空气间隙的推荐值。
    交流电气装置电气装置过电压保护绝缘配合
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