JT/T 8100.31-1992 船用通信导航设备的安装、使用、维护、修理技术要求 气象传真机
作者:标准资料网 时间:2024-05-14 03:22:10 浏览:8296
来源:标准资料网
基本信息
| 标准名称： | 船用通信导航设备的安装、使用、维护、修理技术要求 气象传真机 |
| 中标分类： |
公路、水路运输 >>
水路运输 >>
船舶通信、导航设备的管理、使用及维修 |
| 替代情况： | JT 4530.31-1987 |
| 发布日期： | 1992-09-28 |
| 实施日期： | 1993-05-01 |
| 首发日期： | |
| 作废日期： | 2006-02-20 |
| 出版日期： | |
| 页数： | 3页 |
适用范围
没有内容
前言
没有内容
目录
没有内容
引用标准
没有内容
所属分类： 公路 水路运输 水路运输 船舶通信 导航设备的管理 使用及维修
【英文标准名称】:High-voltagealternatingcurrentcircuit-breakers;guideforseismicqualificationofhigh-voltagealternatingcurrentcircuit-breakers
【原文标准名称】:高压交流断路器高压交流断路器抗地震性能验证指南
【标准号】:IEC61166-1993
【标准状态】:作废
【国别】:国际
【发布日期】:1993-03
【实施或试行日期】:
【发布单位】:国际电工委员会(IEC)
【起草单位】:IEC/SC17A
【标准类型】:()
【标准水平】:()
【中文主题词】:开关设备;试验;电气工程;地震荷载;土地保持工作;高压开关装置;开关;高压设备
【英文主题词】:
【摘要】:Appliesonlytogroundmountedcircuit-breakers,thesupportingstructuresofwhicharerigidlyconnectedwiththeground,anddoesnotcovertheseismicqualificationofcircuit-breakersinmetalenclosedswitchgear.Iftheauxiliaryandcontrolequipme
【中国标准分类号】:K43
【国际标准分类号】:29_130_10
【页数】:31P;A4
【正文语种】:英语
Product Code:SAE J1400
Title:Laboratory Measurement of the Airborne Sound Barrier Performance of Flat Materials and Assemblies
Issuing Committee:Acoustical Materials Committee
Scope:This SAE Recommended Practice presents a test procedure for determining the airborne sound barrier performance of materials and composite assemblies commonly installed in surface vehicles and marine products.This document is intended to provide a means of rank ordering barrier materials according to their sound transmission loss. At each test frequency the transmission loss (TL) is projected from the measured noise reduction of the test specimen using a correlation factor (CF). The respective CF for the test condition is determined as the differences between the measured noise reduction (MNR) of a homogeneous limp panel, such as lead, and its calculated field-incidence transmission loss. Latitude is permitted in certain test conditions that do not necessarily conform to all of the acoustical requirements of ASTM E 90. This method facilitates the evaluation of automotive materials and assemblies under conditions of representative size, edge constraint, and sound incidence so as to allow better correlation with in-use barrier performance.
