DL/T 474.1-2006
Guide for insulation test on site Insulation resistance、dielectric absorption ratio and polarization index test (English Version)

Standard No.

DL/T 474.1-2006

Language

Chinese, Available in English version

Release Date

2006

Published By

Professional Standard - Electricity

Status

Be replaced 2018-07

Replace By

DL/T 474.1-2018

Latest

DL/T 474.1-2018

Replace

DL 474.1-1992

Scope

This standard proposes a series of technical details such as instrument selection, test methods and precautions involved in insulation resistance, absorption ratio and polarization index tests. This standard is applicable to the insulation resistance, absorption ratio and polarization index tests of high and low voltage electrical equipment in power plants, substations, power lines and other sites and in repair workshops, laboratories and other conditions.

DL/T 474.1-2006 Referenced Document

• DL/T 596 Rules for preventive testing of electrical equipment
• JJG 622 Verification Regulation of Megohm-meter

DL/T 474.1-2006 history

• 2018 DL/T 474.1-2018 Insulation Resistance, Absorption Ratio and Polarization Index Tests
• 2006 DL/T 474.1-2006 Guide for insulation test on site Insulation resistance、dielectric absorption ratio and polarization index test
• 1992 DL 474.1-1992 Insulation Resistance, Absorption Ratio and Polarization Index Tests

DL/T 474.1-2006 Guide for insulation test on site Insulation resistance、dielectric absorption ratio and polarization index test has been changed from DL 474.1-1992 Insulation Resistance, Absorption Ratio and Polarization Index Tests.