【英文标准名称】:High-voltageswitchgearandcontrolgear-Part110:Inductiveloadswitching
【原文标准名称】:高压开关和控制设备.第110部分:电感负载开关
【标准号】:BSEN62271-110-2009
【标准状态】:现行
【国别】:英国
【发布日期】:2009-07-31
【实施或试行日期】:2009-07-31
【发布单位】:英国标准学会(GB-BSI)
【起草单位】:BSI
【标准类型】:()
【标准水平】:()
【中文主题词】:交流开关和控制开关;交流电流;断路器;电路;尺寸选定;电气工程;电气设备;电气安全性;电磁兼容性(EMC);高电压;高压电器;高压开关装置;高压开关设备;电感;感应式调压器;感应;绝缘;室外电站;特性;防电击;合格试验;额定电压;额定值;常规检验;开关设备;测试;变压器
【英文主题词】:ACswitchgearandcontrolgear;Alternatingcurrent;Circuit-breakers;Circuits;Dimensioning;Electricalengineering;Electricalequipment;Electricalsafety;EMC;Highvoltage;High-voltageequipment;High-voltageswitchgear;High-voltageswitchgears;Induction;Induction-voltageregulators;Inductive;Insulations;Outdoorstations;Properties;Protectionagainstelectricshocks;Qualificationtests;Ratedvoltages;Ratings;Routinechecktests;Switchgears;Testing;Transformers
【摘要】:ThisInternationalStandardisapplicabletoa.c.circuit-breakersdesignedforindoororoutdoorinstallation,foroperationatfrequenciesof50Hzand60Hzonsystemshavingvoltagesabove1000Vandappliedforinductivecurrentswitchingwithorwithoutadditionalshort-circuitcurrentbreakingduties.Thestandardisapplicabletocircuit-breakersinaccordancewithIEC62271-100thatareusedtoswitchhigh-voltagemotorcurrentsandshuntreactorcurrentsandalsotohigh-voltagecontactorsusedtoswitchhigh-voltagemotorcurrents[2].Switchingunloadedtransformers,i.e.breakingtransformermagnetizingcurrent,isnotconsideredinthisstandard.Thereasonsforthisareasfollows:a)duetothenon-linearityofthetransformercore,itisnotpossibletocorrectlymodeltheswitchingoftransformermagnetizingcurrentusinglinearcomponentsinatestlaboratory.Testsconductedusinganavailabletransformer,suchasatesttransformer,willonlybevalidforthetransformertestedandcannotberepresentativeforothertransformers;b)asdetailedinCIGRETechnicalBrochure305[1],thecharacteristicsofthisdutyareusuallylessseverethananyotherinductivecurrentswitchingduty.Itshouldbenotedthatsuchadutymayproducesevereovervoltageswithinthetransformerwinding(s)dependingonthecircuit-breakerre-ignitionbehaviourandtransformerwindingresonancefrequencies.Short-linefaults,out-of-phasecurrentmakingandbreakingandcapacitivecurrentswitchingarenotapplicabletocircuit-breakersappliedtoswitchshuntreactorsormotors.Thesedutiesarethereforenotincludedinthisstandard.Subclause1.1ofIEC62271-100isotherwiseapplicable.
【中国标准分类号】:K43
【国际标准分类号】:29_130_10
【页数】:32P.;A4
【正文语种】:英语


【英文标准名称】:StandardTestMethodforDeterminingtheAerobicBiodegradationofPlasticMaterialsinanActivated-Sludge-Wastewater-TreatmentSystem
【原文标准名称】:活性污泥-污水处理系统中测定塑料材料需氧生物降解能力的标准试验方法
【标准号】:ASTMD5271-2002
【标准状态】:现行
【国别】:
【发布日期】:2002
【实施或试行日期】:
【发布单位】:美国材料与试验协会(US-ASTM)
【起草单位】:D20.96
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:塑料;降解能力;污水处理厂;活性污泥;试验
【英文主题词】:aerobic;biodegradation;municipal;nitrification;plastics;sewage;sludge;wastetreatment
【摘要】:Thedegreeandrateofaerobicbiodegradabilityofaplasticmaterialintheenvironmentdeterminestowhatextentandinwhattimeperiodthatplasticmaybeeliminatedfromcertainenvironments.Withincreasinguseofplastics,disposali
【中国标准分类号】:Z16
【国际标准分类号】:13_060_30
【页数】:6P.;A4
【正文语种】: