GB/T 3048.4-1994
Test methods for determining electrical properties of electric cables and wires.Measurement of D.C. resistance of conductors (English Version)

Standard No.: GB/T 3048.4-1994
Language: Chinese, Available in English version
Release Date: 1994
Published By: General Administration of Quality Supervision, Inspection and Quarantine of the People‘s Republic of China
Status: Be replaced 2008-05
Replace By: GB/T 3048.4-2007
Latest: GB/T 3048.4-2007

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.

GB/T 3048.4-1994 history

2007 GB/T 3048.4-2007 Test methods for electrical properties of electric cables and wires.Part 4: Test of DC resistance of conductors
1994 GB/T 3048.4-1994 Test methods for determining electrical properties of electric cables and wires.Measurement of D.C. resistance of conductors