GB/T 21218-2007 (English Version) PDF

Standard No.: GB/T 21218-2007
Language: Chinese, Available in English version
Release Date: 2007
Published By: General Administration of Quality Supervision, Inspection and Quarantine of the People‘s Republic of China
Status: Be replaced 2024-06
Replace By: GB/T 21218-2023
Latest: GB/T 21218-2023

Scope: This standard specifies the specifications and test methods for unused silicon insulating fluids used in transformers and other electrotechnical equipment. The specified properties of T1 type transformer silicon insulating liquid are listed in Table 1, other types will be listed when needed

GB/T 21218-2007 Referenced Document

GB/T 10065 Gassing of insulating liquids under electrical stress and ionization
GB/T 1884 Crude petroleum and liquid petroleum products--Laboratory determination of density--Hydrometer method
GB/T 261 Determination of flash point—Pensky-Martens closed cup method*， 2021-10-11 Update
GB/T 265 Petroleum products--Determination of kinematic viscosity and calculation of dynamic viscosity
GB/T 3535 Petroleum products.Determination of pour point
GB/T 3536 Petrolem products.Determination of flash and fire points.Cleveland open cup method*， 2008-08-25 Update
GB/T 507 Insulating liquids--Determination of the breakdown voltage at power frequency
GB/T 5654 Insulating liquids.Measurement of relative permittivity,dielectric dissipation factor and d.c.resistivity
IEC 60475 Method of sampling insulating liquids*， 2022-05-25 Update
IEC 60814 Insulating liquids - Oil-impregnated paper and pressboard - Determination of water by automatic coulometric Karl Fischer titration
ISO 2211 Liquid chemical products; Measurement of colour in Hazen units (platinum-cobalt scale)
ISO 5661 Petroleum products; Hydrocarbon liquids; Determination of refractive index

2023 GB/T 21218-2023 Unused silicon insulating liquid for electrical use
2007 GB/T 21218-2007 Specifications for unused silicone insulating liquids for electrotechnical purposes