GB/T 3048.4-2007: Test methods for electrical properties of electric cables and wires -- Part 4: Test of DC resistance of conductors

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Scope

This Standard specifies the test apparatus, specimen preparation, test procedure for test
of DC resistance of conductors as well as calculation and test record.
This Standard is applicable to measure DC resistance of conductors of electric wires and
cables, the measuring range is as follows.
– Kelvin (double) bridge (2×105 ~ 99.9)Ω.
– Wheatstone (single) bridge 1Ω ~ 100Ω and above.
The test methods specified in this Standard is not applicable to measure DC resistance of
electric wires and cables which have been installed.
This Standard shall be used together with GB/T 3048.1.

Basic Data

Standard ID	GB/T 3048.4-2007 (GB/T3048.4-2007)
Description (Translated English)	Test methods for electrical properties of electric cables and wires -- Part 4: Test of DC resistance of conductors
Sector / Industry	National Standard (Recommended)
Classification of Chinese Standard	K13
Classification of International Standard	29.060
Word Count Estimation	11,172
Date of Issue	2007-12-03
Date of Implementation	2008-05-01
Older Standard (superseded by this standard)	GB/T 3048.4-1994
Quoted Standard	GB/T 3048.1
Regulation (derived from)	Announcement of Newly Approved National Standards No. 12 of 2007 (total 112)
Issuing agency(ies)	General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, Standardization Administration of the People's Republic of China
Summary	This standard specifies the DC resistance of conductors of test equipment, Specimen preparation, test procedures, test results and calculations and test records. The test method specified in this section for measuring the DC resistance of the conductor wire and cable, the measurement range is: double bridge: (2 �� 10 ^ -5 ~ 99. 9) ��, Wheatstone bridge