ISO 739-1976 工业用碳酸钠试样的制备和贮存

上一篇: DIN 6809-1-1976 临床剂量学；X射线、γ射线和电子束的治疗应用
下一篇: ISO 3763-1976 钢材评定非金属夹杂物含量的宏观方法

【英文标准名称】:StandardSpecificationforConcentric-Lay-StrandedCopperConductors,Hard,Medium-Hard,orSoft
【原文标准名称】:硬、中等硬或软的同心绞捻铜导线的标准规范
【标准号】:ASTMB8-2004
【标准状态】:现行
【国别】:
【发布日期】:2004
【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】:B01.04
【标准类型】:(Specification)
【标准水平】:()
【中文主题词】:铜;电气工程;绞线;导电体
【英文主题词】:concentric-lay-strandedcopperconductors;concentric-lay-strandedhard;copperconductors;copperconductorsforelectricalpurposes;medium-hard;orsoftcopperconductors
【摘要】:1.1Thisspecificationcoversbareconcentric-lay-strandedconductorsmadefromroundcopperwires,eitheruncoatedorcoatedwithtin,lead,orleadalloyforgeneraluseforelectricalpurposes.Theseconductorsshallbeconstructedwithacentralcoresurroundedbyoneormorelayersofhelicallylaidwires.Note1Thisspecificationalsopermitsconductorsforuseascoveredorinsulatedelectricalconductors.Note2Sealedconductors,thatareintendedtopreventlongitudinalwaterpropagationandarefurthercovered/insulated,arealsopermittedwithintheguidelinesofthisspecification.1.2Forthepurposesofthisspecification,conductorsareclassifiedasfollows(ExplanatoryNOTE1andNOTE2):1.2.1ClassAAForbareconductorsusuallyusedinoverheadlines.1.2.2ClassAForconductorstobecoveredwithweather-resistant(weather-proof),slow-burningmaterials,andforbareconductorswheregreaterflexibilitythanisaffordedbyClassAAisrequired.1.2.3ClassBForconductorstobeinsulatedwithvariousmaterialssuchasrubber,paper,varnishedcloth,andsoforth,andfortheconductorsindicatedunderClassAwheregreaterflexibilityisrequired.1.2.4ClassCandClassDForconductorswheregreaterflexibilityisrequiredthanisprovidedbyClassBconductors.1.3TheSIvaluesfordensityareregardedasthestandard.Forallotherproperties,theinch-poundvaluesaretoberegardedasstandardandtheSIunitsmaybeapproximate.
【中国标准分类号】:K11
【国际标准分类号】:29_060_20
【页数】:7P.;A4
【正文语种】:


Product Code:SAE AS413
Title:Temperature Instruments (Reciprocating Engine Powered Aircraft) (NONCURRENT Nov 1996)
Issuing Committee:A-4 Aircraft Instruments Committee
Scope:This Aerospace Standard establishes the minimum sage performance standards for electrical type temperature instruments primarily for use with reciprocating engine powered transport aircraft, the operation of which may subject the instruments to the environmental conditions specified in Section 3.4. This Aerospace Standard covers two basic types of temperature instruments as follows: TYPE I Radiometer type, actuated by changes in electrical resistance of a temperature sensing electrical resistance element; the resistance changes being obtained by temperature changes of the temperature sensing resistance element. TYPE II: Millivoltmeter type, operated and actuated by varying E.M.F. output of a thermocouple; the varying E.M.F. input to the instrument being obtained by temperature changes of the temperature sensing thermocouple.