DL/T 423-2009
Determination of dissolved gas content in insulatingoil.Method of vacuum pressure difference (English Version)

Standard No.

DL/T 423-2009

Language

Chinese, Available in English version

Release Date

2009

Published By

Professional Standard - Electricity

Latest

DL/T 423-2009

Replace

DL 423-1991

Scope

This standard specifies the method for determining the gas content in insulating oil using the vacuum pressure difference method. This standard applies to the determination of the gas content of insulating oil in oil-filled electrical equipment. For the determination of gas content of other oil products with kinematic viscosity (40°C) not greater than 40mm/s, please refer to this standard. This standard is divided into method A (electronic vacuum gauge method) and method B (U-shaped oil column differential pressure gauge method).

DL/T 423-2009 Referenced Document

• GB/T 7597 Method of sampling for transformer and turbine oils in electric power industry

DL/T 423-2009 history

• 2009 DL/T 423-2009 Determination of dissolved gas content in insulatingoil.Method of vacuum pressure difference
• 1991 DL 423-1991 Determination of gas content in insulating oil Differential-vacuum-pressure method

DL/T 423-2009 Determination of dissolved gas content in insulatingoil.Method of vacuum pressure difference has been changed from DL 423-1991 Determination of gas content in insulating oil Differential-vacuum-pressure method.