According to national regulations, the conductor resistance value of wire and cable that applied in the low voltage distribution system should not be greater than standard value, to guarantee the safe operation, the cable conductor resistance of both cable production enterprise and test institutions of technology supervision sector is the necessary test project, and it's also the most concerned test project of consumers (using party). Measurement of uncertainty is the important indicator of impacting measuring level, but due to the influence of various factors, inspectors often overlook the evaluation of measurement uncertainty, which affects the validity and accuracy of the test result to some extent. This paper analyses uncertainty degrees of measurement of direct-current resistance in the cable quality inspection.%根据国家的规定，应用在低压配电系统中的电线电缆，其导体电阻值不应大于标准规定值，为了保障运行安全，不管是电缆生产企业还是技术监督部门的检验机构，电缆导体电阻都是必须检验的项目，也是消费者（使用方）最关心的检验项目。测定不确定度是影响测定水平的重要指标，但是由于各种因素的影响，检测人员往往会忽略对于不确定度的评价，这就在一定程度上影响了检测结果的有效性与准确性。本文主要分析电缆质检中导体直流电阻测量的不确定度。
展开▼
