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GB/T 41632-2022Insulating liquids - Specifications for unused synthetic organic esters for electrical purposes (English PDF)

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Issued by

State Administration for Market Regulation, China National Standardization Administration

Level / Type

National · Recommended

Issue date

July 11, 2022

Implementation date

February 1, 2023

Scope

GB/T 41632-2022 (Insulating liquids - Specifications for unused synthetic organic esters for electrical purposes) is available as an English-translated PDF.

GB/T 41632-2022 is the Chinese standard "Insulating liquids - Specifications for unused synthetic organic esters for electrical purposes". Its scope clause reads: This document specifies the classification and marking, packaging, transportation and storage, properties and test methods of virgin synthetic organic esters for electrical purposes.

Require. This document applies to transformers, switches, and other similar electrical equipment requiring the use of synthetic organic esters as insulating and heat transfer media. Synthetic organic esters used.

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Document preview — GB/T 41632-2022

National Standard of the People's Republic of China

Classification: K 15

Issued by: State Administration for Market Regulation, China National Standardization Administration

Preface
1 Scope
2 Normative references
3 Terms and Definitions
4 Product classification, marking, general delivery requirements, sampling, packaging and disposal
4.1 Product Classification
4.2 Marking and general delivery requirements
4.3 Packaging
4.4 Sampling
4.5 Disposal
5 Physicochemical properties of synthetic organic esters
5.1 Color
5.2 Appearance
5.3 Density
5.4 Kinematic viscosity
5.5 Flash point and fire point
5.6 Pour point
5.7 Crystallinity
5.8 Water content
5.9 Acid number
5.10 Oxidation stability
6 Electrical properties of synthetic organic esters
6.1 Breakdown voltage
6.2 Dielectric Dissipation Factor and Volume Resistivity
6.3 Gas evolution
7.1 Flash point and fire point
7.2 Biodegradability
7.3 Toxicity
8 Technical requirements and test methods for synthetic organic esters for transformers
9 Technical requirements and test methods for synthetic organic esters for capacitors
Appendix A (Informative) Structure Number Comparison List
Appendix B (normative) Determination of crystallinity

1 Scope

This document specifies the classification and marking, packaging, transportation and storage, properties and test methods of virgin synthetic organic esters for electrical purposes.

Require.

This document applies to transformers, switches, and other similar electrical equipment requiring the use of synthetic organic esters as insulating and heat transfer media.

Synthetic organic esters used.

2 Normative references

The contents of the following documents constitute essential provisions of this document through normative references in the text. Among them, dated citations documents, only the version corresponding to that date applies to this document; for undated references, the latest edition (including all amendments) applies to this document.

GB/T 2900.5-2013 Electrical terminology insulating solids, liquids and gases (IEC 60050-212.2010, IDT)

GB/T 10065-2007 Determination of gas evolution properties of insulating liquids under electrical stress and ionization (IEC 60628.1985,

MOD)

Note. There is no technical difference between the quoted content of GB/T 10065-2007 and the content of IEC 60628.1985.

NB/SH/T 0811-2010 Unused hydrocarbon insulating oil for determination of oxidation stability (IEC 61125.1992, MOD)

Note. There is no technical difference between the quoted content of NB/SH/T 0811-2010 and the content of IEC 61225.1992.

Note. GB/T 23770-2009 General method for determination of chromaticity of liquid inorganic chemical products (ISO 2211.1973, MOD)

ISO 2592 Petroleum and related products Determination of flash point and fire point Cleveland open cup method (Petroleum and related products)

Note. GB/T 3536-2008 Determination of flash point and fire point of petroleum products Cleveland open cup method (ISO 2592.2000, MOD) closedcupmethod)

Note. GB/T 261-2021 Determination of flash point Pensky-Martin closed cup method (ISO 2719.2016, MOD)

ISO 3016 Determination of the pour point of petroleum products (Petroleumproducts-Determinationofpour-point)

Note. GB/T 3535-2006 Determination of Pour Point of Petroleum Products (ISO 3016.1994, MOD)

ISO 3104 Petroleum products Determination of kinematic viscosity and calculation of dynamic viscosity of transparent and opaque liquids (Petroleum

Note. GB/T 30515-2014 Determination of kinematic viscosity and dynamic viscosity calculation method of transparent and opaque liquid petroleum products (ISO 3104.1994,

MOD)

ISO 3675 Laboratory Determination of Density and Relative Density of Crude Oil and Liquid Petroleum Products Petroleum Densitometry (Crudepetro-

Note. GB/T 1884-2000 Laboratory Determination of Density of Crude Oil and Liquid Petroleum Products (Densitometer Method) (eqvISO 3675.1998)

GB/T 42733 | GB/T 31838.7 | GB/T 36289.1 | GB/T 41633.2 | GB/T 41631 | […]

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This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 24 pages — is available in the English PDF.

Referenced standards

Normative references

IEC 60050 · IEC 60628.1985 · IEC 61125.1992 · IEC 61225.1992 · ISO 2211.1973 · ISO 2592 · ISO 2592.2000 · ISO 2719.2016 · ISO 3016 · ISO 3016.1994 · ISO 3104 · ISO 3104.1994 · ISO 3675

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