HB 7135-1995 校准系统要求
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来源:标准资料网
基本信息
| 标准名称： | 校准系统要求 |
| 中标分类： |
航空、航天 >>
航空、航天综合 >>
标准化、质量管理 |
| 发布日期： | 1995-05-04 |
| 实施日期： | 1995-06-01 |
| 首发日期： | 1900-01-01 |
| 作废日期： | 1900-01-01 |
| 出版日期： | 1900-01-01 |
| 页数： | 7页 |
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所属分类： 航空 航天 航空 航天综合 标准化 质量管理
MIL-C-13931H (AMENDMENT 1), MILITARY SPECIFICATION: CANNON: GENERAL SPECIFICATION FOR (29 DEC 1992) [S/S BY MIL-DTL-13931J]., This amendment forms a part of MIL-C-13931H, dated11 February 1991, and is approved for use by allDepartments and Agencies of the Department of Defense【英文标准名称】:StandardPracticeforDeterminingRail-to-EarthResistance
【原文标准名称】:铁路至地面间阻力测定的标准实施规程
【标准号】:ASTMG165-1999(2005)
【标准状态】:现行
【国别】:
【发布日期】:1999
【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】:G01.10
【标准类型】:(Practice)
【标准水平】:()
【中文主题词】:枕木;运行钢轨;直接固定;公共运输系统;铁轨路基;铁轨至地面间阻力;牵引电力配电站
【英文主题词】:directfixation;masstransitsystems;runningrails;trackballast;track-to-earthresistance;tractionpowersubstations;woodentie
【摘要】:Lowresistancebetweentherailsandearthcouldresultinlargemagnitudesofstrayearthcurrentswiththeattendantcorrosiondamagetoundergroundmetallicstructures.Thesemeasurementsareofalowvoltagetypeandarenotdesignedtoevaluatethehighvoltagedielectriccharacteristicsoftherailinsulatingelements.Sectionsoftrackwithrail-to-earthresistanceslessthanacceptableminimumsmustbetestedingreaterdetailtodeterminethereason(s)forthiscondition.Determinationofthereason(s)foranylowrail-to-earthresistancemayrequiretheuseofspecialtestingtechniquesorspecialinstruments,orboth,beyondthescopeofthispractice.Theelectricaltestscallfortheuseofelectricmetersthathavevaryingcharacteristicsdependingoncost,manufacture,andgenerictype.Itisassumedthatanypersonemployingthetestprocedurescontainedhereinwillknowhowtodetermineandapplypropercorrectionfactorsandthattheywillhavesufficientknowledgetoensurereasonableaccuracyinthedataobtained.Thispracticedoesnotencompassallpossiblefieldconditionstoobtainrail-to-earthresistancecharacteristics.Nogeneralsetoftestprocedureswillbeapplicabletoallsituations.1.1Thispracticecoverstheproceduresnecessarytofollowformeasuringresistance-to-earthoftherunningrailswhichareusedastheconductorsforreturningthetrainoperatingcurrenttothesubstationinelectricmasstransitsystems.1.2ThevaluesstatedinSIunitsaretoberegardedasthestandard.Thevaluesgiveninparenthesesareforinformationonly.1.3Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:S04
【国际标准分类号】:45_120
【页数】:5P.;A4
【正文语种】:
