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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，( y' B+ ? }! ?
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( a6 \4 g( Q" l4 V X4 L* X0 T
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) |. H0 ^( m; }+ Y
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
: a% D1 M% h. U/ ?确定度。5 J0 j7 O0 {' a e. w, H' e: |
关键词: 电线电缆; 绝缘电阻; 测量不确定度5 o! B$ w% z& a6 H7 F v
Research on Uncertainty Measurement of Insulation Resistance of Wires and Cables
9 _( x' @6 T; f6 G0 l/ xJI Hong
0 l% N3 K; B, T G6 Q3 _! I( Jiangsu Province Institute of Quality Inspection and Testing，Nanjing 210007，China)
6 |- r F3 T* N: i$ p0 _( vAbstract: Insulation resistance is one of the basic electrical properties of wire and cables，and it is an important+ m# o" h% U& p+ i$ }
quality feature of the tested object． Many quality defects of the production process can be found by the value of insulation; S, @5 L; S9 C* s) B: g
resistance，which is useful to identify the insulating materials． So it is necessary to evaluate the uncertainty measurement
2 o' Q* N* K/ d8 O* Eof insulation resistance of wires and cables． Many factors of the uncertainty measurement of 70 °C insulation4 @8 E$ s" F7 Q m. N
resistance are considered，and the uncertainty of insulation resistance is given also．
5 }+ Z O8 o- |) z3 S/ RKey words: wires and cables; insulation resistance; uncertainty of measurement |
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发表于 2011-9-28 13:27:26
