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DL/T 474.1-2018Guide for insulation test on site Insulation resistance, dielectric absorption ratio and polarization index test (English PDF)

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Issued by

National Energy Administration

Level / Type

National · Recommended

Issue date

April 3, 2018

Implementation date

July 1, 2018

Scope

DL/T 474.1-2018 (Guide for insulation test on site Insulation resistance, dielectric absorption ratio and polarization index test) is available as an English-translated PDF.

DL/T 474.1-2018 — This standard specifies the technical requirements for instrument selection, test methods, precautions and judgment principles related to insulation resistance, absorption ratio and polarization index test.

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Document preview — DL/T 474.1-2018

National Standard of the People's Republic of China

ICS: 29.040.10
Classification: E 38
Replacing: DL/T 474.1-2006

Issued by: National Energy Administration

What this standard covers1
Document data2
Standards quoted by this document3

What this standard covers

This standard specifies the technical requirements for instrument selection, test methods, precautions and judgment principles related to insulation resistance, absorption ratio and polarization index test. This standard is applicable to insulation resistance, absorption ratio and polarization index test of high and low voltage electrical equipment insulation in power plants, substations, power lines, etc., and in repair workshops and laboratories.

Document data

International classification (ICS): 29.040.10.

Chinese classification (CCS): E38.

Estimated length of the Chinese original: 11,183 words.

Supersedes the earlier edition DL/T 474.1-2006.

Standards quoted by this document

GB/T 6451; DL/T 596; JJG 622

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This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 7 pages — is available in the English PDF.

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