GB/T 3048.4-1994 in English

《GB/T 3048.4-1994电线电缆电性能试验方法 导体直流电阻试验》由TC213（全国电线电缆标准化技术委员会）归口，主管部门为中国电器工业协会。
本标准规定了导体直流电阻试验的试验设备、试样准备、试验步骤和试验结果及计算。本标准适用于测量电线电缆导体的直流电阻，其测量范围为：双臂电桥：1Ω及以下；单臂电桥或双电桥：1~99.9Ω；单臂电桥：100Ω及以上。

Scope

This standard specifies the test equipment, sample preparation, test procedures, test results and calculations for the DC resistance test of conductors. This standard applies to the measurement of DC resistance of wire and cable conductors, and its measurement range is: Double-arm bridge: 1Ω and below; Single-arm bridge or double-arm bridge: 1～99.9Ω; Single-arm bridge: 100Ω and above. Unless otherwise specified in the product standard, during the type test and sampling test, the measurement should be carried out in a room with an ambient temperature of 15-35°C and an air humidity of not more than 85%. This test method is not suitable for measuring the DC resistance of installed wires and cables. The general requirements and definitions of electrical performance tests of wires and cables and the requirements for periodic calibration of test equipment are specified in GB/T3048.1.