IEC 61557-6-1997 交流1000V和直流1500V以下低压配电系统中的电气安全防护措施的试验、测量和监控设备第6部分:TT和TN系统中的剩余电流装置
时间:2024-05-03 00:04:42 来源: 标准资料网 作者：标准资料网 阅读：8184
【英文标准名称】:Electricalsafetyinlowvoltagedistributionsystemsupto1000Va.c.and1500Vd.c.-Equipmentfortesting,measuringormonitoringofprotectivemeasures-Part6:Residualcurrentdevices(RCD)inTTandTNsystems
【原文标准名称】:交流1000V和直流1500V以下低压配电系统中的电气安全防护措施的试验、测量和监控设备第6部分:TT和TN系统中的剩余电流装置
【标准号】:IEC61557-6-1997
【标准状态】:作废
【国别】:国际
【发布日期】:1997-02
【实施或试行日期】:
【发布单位】:国际电工委员会(IEC)
【起草单位】:IEC/TC85
【标准类型】:()
【标准水平】:()
【中文主题词】:测量设备;直流装置;电气安全;电磁试验;额定电压装置;试验;电气工程;定义;剩余电流设备;低压设备
【英文主题词】:Definition;Definitions;Directcurrentinstallations;Electricalengineering;Electricalsafety;Electromagnetictests;Installationsforratedvoltages;Low-voltageinstallations;Measuringequipment;RCD;Testing
【摘要】:Laysdownrequirementsformeasuringequipmentappliedtotesttheeffectivenessofprotectivemeasuresbyregulardisconnectionsofresidualcurrentprotectivedevices(RCD)inTTandTNsystems.
【中国标准分类号】:K30
【国际标准分类号】:
【页数】:17P.;A4
【正文语种】:英语
Product Code:SAE AMS5692
Title:Steel, Corrosion and Heat-Resistant, Welding Wire, 19Cr - 12.5Ni - 2.5Mo
Issuing Committee:Ams F Corrosion Heat Resistant Alloys Committee
Scope:This specification covers a corrosion and heat-resistant steel in the form of welding wire.Product Code:SAE J1750
Title:Describing and Evaluating the Truck DriverS Viewing Environment
Issuing Committee:Truck And Bus Human Factors Committee
Scope:This SAE Recommended Practice establishes two uniform methods for describing and evaluating the truck driver's viewing environment, the Polar Plot and the Horizontal Planar Projection. The Polar Plot presents the entire available field of view in an angular format, onto which items of interest may be plotted, whereas the Horizontal Planar Projection presents the field of view at a given elevation chosen for evaluation. These methods are based on the three dimensional reference system described in SAE J182a. This document relates to the driver's exterior visibility environment and was developed for the heavy truck industry (Class B vehicles, class 6, 7, 8 vehicles) although the projection principles presented in this document can be applied to any class of motor vehicles. This document is intended to complement SAE J1050a and provides a visual format that can describe the driver's entire viewing environment. This environment can then be analyzed to determine what the driver is capable of seeing. It should be noted that one of the most important factors affecting the driver's field of view and the ability to make valid vehicle/design comparisons is the location of the driver's eyepoint. SAE J941 defines the eyellipse which forms the basis for eyepoints chosen as the origin for polar plots and horizontal planar projections. Both the Horizontal Planar Projection and Polar Plot create monocular evaluations. Projections/plots of multiple eyepoints must be overlaid to create binocular of ambinocular evaluations.Anaytical methods for creating Polar Plots and Horizontal Planar Projections for direct and indirect vision (planar and spherical convex mirrors) are presented. Note that it is possible to create plots and projections for other mirror surfaces and vision devices if the equations for determining reflection points are provided. It is also possible to create polar plots and horizontal planar projections using experimental and graphical methods. These are beyond the present scope of this document.