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【英文标准名称】:Guidetoelectromagneticenvironmentforlow-frequencyconducteddisturbancesandsignallinginpublicpowersupplysystems
【原文标准名称】:低频导线分布和公共供电系统中的信号的电磁环境指南
【标准号】:BS7484-1991
【标准状态】:现行
【国别】:英国
【发布日期】:1991-10-31
【实施或试行日期】:1991-10-31
【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】:电磁辐射;电磁兼容性;分类系统;电力系统;信号传输;电压波动;可混用性;调幅;兼容性;电负载;低频;电网;射频;电路;变频机;乱真信号;电力系统干扰;谐波
【英文主题词】:Compatibility;Definition;Definitions;Electricpowernetworks;Electricpowersystems;Electricalengineering;Electricalfaults;Electromagnetic;Electromagneticcompatibility;Electromagneticfields;Electromagnetism;EMC;Environmentalconditions;Influencequantities;Interferencerejections;Interferences;Limits(mathematics);Lowfrequencies;Low-frequencyengineering;Magneticfieldeffects;Magnetoelectriceffects;Measurement;Signaltransmission
【摘要】:ThissectionofIEC1000-2isconcernedwithconducteddisturbancesinthefrequencyrangeupto10kHzwithanextensionformainssignallingsystems.Separatesectionsgivenumericalcompatibilitylevelsfordifferentsystemvoltagelevels.Thissectiondoesnotdealwiththeapplicationofcompatibilitylevelstoassess,forexample,thepermissibleinterferenceemissionfromspecificitemsofequipmentorinstallations,becauseothersystemparameters,suchasitsimpedanceasafunctionoffrequency,havealsotobeconsidered.Furthermore,itdoesnotprejudgethespecificationofimmunitylevelsbytheproductcommitteesbutmerelyprovidesaguide.Thedisturbancephenomenaconsideredare:-harmonics;-inter-harmonics;-voltagefluctuations;-voltagedipsandshortsupplyinterruptions;-voltageunbalance;-mainssignalling;-powerfrequencyvariation;-d.c.components.Theobjectofthissectionistogiveinformationonthevarioustypesofdisturbancesthatcanbeexpectedonpublicpowersupplysystems.Itisareferencedocumentforthoseassociatedpartsthatgivevaluesofcompatibilitylevel.
【中国标准分类号】:F20
【国际标准分类号】:33_100_20
【页数】:32P.;A4
【正文语种】:英语


【英文标准名称】:Rubber,vulcanizedorthermoplastic-Determinationoflow-temperaturebrittleness(ISO812:2006);EnglishversionofDINISO812:2009-09
【原文标准名称】:硫化橡胶或热塑橡胶.低温脆性的测定(ISO812-2006).英文版本DINISO812-2009-09
【标准号】:DINISO812-2009
【标准状态】:现行
【国别】:德国
【发布日期】:2009-09
【实施或试行日期】:
【发布单位】:德国标准化学会(DE-DIN)
【起草单位】:
【标准类型】:()
【标准水平】:()
【中文主题词】:脆性;冷式法;低温试验;定义(术语);测定;弹性体;脆化极限温度;材料测试;橡胶;灵敏度;温度;温度测量;温度测量方法;试验设备;测试;硫化橡胶
【英文主题词】:Brittleness;Coldtests;Coldness;Definitions;Determination;Elastomers;Limittemperatureofbrittleness;Materialstesting;Rubber;Sensitivity;Temperature;Temperaturemeasurement;Temperaturemeasuringmethod;Testequipment;Testing;Vulcanizedrubber
【摘要】:ThisInternationalStandardspecifiesamethodfordeterminingthelowesttemperatureatwhichrubbermaterialsdonotexhibitbrittlefailureorthetemperatureatwhichhalfofthetestpiecesusedinatestfailwhenimpactedunderspecifiedconditions.Thetemperaturesthusdetermineddonotnecessarilyrelatetothelowesttemperatureatwhichthematerialcanbeusedsincethebrittlenesswillbeaffectedbytheconditionsoftestandespeciallybytherateofimpact.Dataobtainedbythismethodshould,therefore,beusedtopredictthebehaviourofrubbersatlowtemperaturesonlyinapplicationsinwhichtheconditionsofdeformationaresimilartothosespecifiedinthetest.Threeproceduresaredescribed:--procedureA,inwhichthebrittlenesstemperatureisdetermined;--procedureB,inwhichthebrittlenesstemperaturefor50%failureisdetermined;--procedureC,inwhichthetestpieceisimpactedataspecifiedtemperature.ProcedureCisusedintheclassificationofrubbermaterialsandforspecificationpurposes.NOTEAsimilartestforrubber-coatedfabricsisdescribedinISO4646,Rubber-orplastics-coatedfabrics--Low-temperatureimpacttest.
【中国标准分类号】:G34
【国际标准分类号】:83_060
【页数】:14P.;A4
【正文语种】:英语