GB/T 3048.5-2007: Test methods for electrical properties of electric cables and wires -- Part 5: Test of insulation resistance

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Scope

This Part of GB/T 3048 specifies the terms and definitions, test equipment,
sample preparation, test procedures, test results and calculation, cautions, and
test record of DC comparison method and voltage-current method for the
measurement of insulation resistance.
This Part is applicable to the measurement of the insulation resistance of electric
wires and cables, including DC comparison method and voltage-current method.
the measurement range of DC comparison method is (105 ~ 2×1035)Ω; the
measurement range of voltage-current method is (104 ~ 1016)Ω; in general,
measurement voltage is (100 ~500)V.
For voltage-current method, if the measured voltage and current are directly
expressed in resistance on the same instrument, then it can also be called
"megger method".
This Part shall be used together with GB/T 3048.1.

Basic Data

Standard ID	GB/T 3048.5-2007 (GB/T3048.5-2007)
Description (Translated English)	Test methods for electrical properties of electric cables and wires -- Part 5: Test of insulation resistance
Sector / Industry	National Standard (Recommended)
Classification of Chinese Standard	K13
Classification of International Standard	29.060.20
Word Count Estimation	11,157
Date of Issue	2007-12-03
Date of Implementation	2008-05-01
Older Standard (superseded by this standard)	GB/T 3048.6-1994; GB/T 3048.5-1994
Quoted Standard	GB/T 2009.5-2002; 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 comparison method and the voltage of the DC current method of testing insulation resistance terminology and definitions, test equipment, Specimen preparation, test procedures, test results and calculations, precautions and test records. This section applies to the test wire and cable insulation resistance, including comparative law and voltage dc current law: comparative law dc measurement range (10 ^ 5 ~ 2 �� 10 ^ 15) ��, Voltage Current measurement range (10 ^ 4 ~ 10 ^ 16) ��, measured voltage is generally (100 ~ 500) V. Voltage Current methods such as the measured voltage and current in the same instrument directly to resistance that is also called " high impedance meter method. " This part should GB/T 3048. 1 together.