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摘要: 绝缘电阻是电线电缆最基本的电气性能之一，它反映电线电缆产品在正常工作状态下的电气绝缘性能， Z7 T, C; x. c+ o6 I
是反映电线电缆产品绝缘特性的重要指标。通过测定绝缘电阻可以发现生产制造工艺中的缺陷，辨别所选用% W1 r9 u, `5 k& W) M+ u+ u5 l, H
绝缘材料的优劣。为了提高测定绝缘电阻的准确性，有必要对绝缘电阻测试影响因素及其不确定度评定加以( Q. Z1 {: C+ b9 N1 Q: g
研究。通过实例分析确定绝缘电阻测试的影响因素并计算电线电缆70℃绝缘电阻的合成不确定度及扩展不 c# N4 n. |4 q& b/ d* m
确定度。
& W4 ? L- C- K$ V% u/ Q关键词: 电线电缆; 绝缘电阻; 测量不确定度
0 v& }& C5 d* @* A6 U Research on Uncertainty Measurement of Insulation Resistance of Wires and Cables
$ R2 o1 ^; f! v' Q+ q$ h# l* J' @JI Hong0 a- J# E [5 n# k
( Jiangsu Province Institute of Quality Inspection and Testing，Nanjing 210007，China)% }, P) h4 z! Z; c J5 w
Abstract: Insulation resistance is one of the basic electrical properties of wire and cables，and it is an important2 u: i# a! Q1 Z4 S7 z
quality feature of the tested object． Many quality defects of the production process can be found by the value of insulation( [) M4 K) I" E7 Q: b% b
resistance，which is useful to identify the insulating materials． So it is necessary to evaluate the uncertainty measurement
( \: Z) f* v' M0 y9 Pof insulation resistance of wires and cables． Many factors of the uncertainty measurement of 70 °C insulation
! {6 {' R: a+ Bresistance are considered，and the uncertainty of insulation resistance is given also．% |. q1 d& R) _
Key words: wires and cables; insulation resistance; uncertainty of measurement |
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发表于 2011-9-28 13:27:26
