BS EN 61897-1999 架空线.风振减振器要求和测试

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【英文标准名称】:Overheadlines-RequirementsandtestsforStockbridgetypeaeolianvibrationdampers
【原文标准名称】:架空线.风振减振器要求和测试
【标准号】:BSEN61897-1999
【标准状态】:现行
【国别】:英国
【发布日期】:1999-02-15
【实施或试行日期】:1999-02-15
【发布单位】:英国标准学会(BSI)
【起草单位】:BSI
【标准类型】:()
【标准水平】:()
【中文主题词】:电气工程;电缆;疲劳试验;导电体;规范(验收);防腐蚀;质量保证;机械试验;振动;阻尼试验;电连接器;分类系统;阻振器;试验条件;架空线;电导率;无损检验;外观检查(试验);性能试验
【英文主题词】:
【摘要】:ThisInternationalStandardappliestoStockbridgetypeaeolianvibrationdampersintendedforsingleconductorsorearthwiresorconductorbundleswheredampersaredirectlyattachedtoeachsubconductor.Thepurchasermayadoptpart(s)ofthisstandardwhenspecifyingrequirementsforothertypesofaeolianvibrationdampersorforStockbridgedampersusedonconductorsorcablesdifferentfromthosementionedabove(e.g.opticalgroundwires,alldielectricself-supportingopticalcables).Inmanycases,testproceduresandtestvaluesarelefttoagreementbetweenthepurchaserandthesupplierandarestatedintheprocurementcontract.AnnexAliststheminimumtechnicaldetailstobeagreedbetweenpurchaserandsupplier.Throughoutthisstandard,theword"conductor"isusedwhenthetestappliestoStockbridgedampersforconductorsorearthwires.
【中国标准分类号】:F21
【国际标准分类号】:29_240_20
【页数】:28P;A4
【正文语种】:英语

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上一篇: BS EN 61466-2-1999 公称电压超过1000V的架空线用复合绝缘子串组合件.尺寸与电气特性
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Product Code:SAE AIR1168/4
Title:Ice, Rain, Fog, and Frost Protection
Issuing Committee:Ac-9c Aircraft Icing Technology Committee
Scope:The ability of aircraft to fly in adverse weather conditions is a requirement for most military and commercial aircraft. Ice buildups in critical areas can affect flight safety by adding drag and weight and thus adversely affecting stability. Supercooled water droplets may exist in clouds at ambient temperatures far below the freezing point. When the droplets are disturbed by an aircraft flying through them, the droplets will impinge and may freeze on airfoil surfaces, radomes, engine inlets, windshields, and other areas, resulting in weight and drag penalties or obstruction of vision through transparent surfaces. Some means, therefore, must be provided to prevent large ice buildups in critical areas. The inner surfaces of most cockpit transparencies are susceptible to condensation in the form of fog or frost during most normal aircraft operation, particularly when descending from high altitude flight, unless fog and frost protection systems are provided. Fog will form on the inside surface of the windshield whenever that surface is below the cockpit air dew point. If the surface temperature is below 32 degrees F, frost will form. Removal of rain from the windshields to maintain pilot visibility is accomplished by hot air jet blast or by windshield wipers. A rain repellent fluid is sometimes used in conjunction with either system for increased rain removal efficiency.

基本信息

标准名称：	航空用贵金属及其合金电位器裸线
中标分类：
ICS分类：	航空器和航天器工程 >> 航空航天制造用材料
替代情况：	HB 5187-81
发布日期：	1996-09-13
实施日期：	1997-01-01
首发日期：	1900-01-01
作废日期：	1900-01-01
出版日期：	1900-01-01
页数：	13页

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所属分类：航空器和航天器工程航空航天制造用材料