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GB/T 21221-2022: Insulating liquids - Specifications for unused liquids based on synthetic aromatic hydrocarbons
Status: Valid GB/T 21221: Evolution and historical versions
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| GB/T 21221-2022 | English | 309 |
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Insulating liquids - Specifications for unused liquids based on synthetic aromatic hydrocarbons
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GB/T 21221-2022
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| GB/T 21221-2007 | English | 559 |
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Insulating liquids -- Specifications for unused insulating liquids based on synthetic aromatic hydrocarbons
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GB/T 21221-2007
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Basic data | Standard ID | GB/T 21221-2022 (GB/T21221-2022) | | Description (Translated English) | Insulating liquids - Specifications for unused liquids based on synthetic aromatic hydrocarbons | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | K15 | | Word Count Estimation | 16,158 | | Issuing agency(ies) | State Administration for Market Regulation, China National Standardization Administration | GB/T 21221-2022: Insulating liquids - Specifications for unused liquids based on synthetic aromatic hydrocarbons
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Insulating liquids - Specifications for unused liquids based on synthetic aromatic hydrocarbons
ICS 29.040.99
CCSK15
National Standards of People's Republic of China
Replacing GB/T 21221-2007
Insulating liquids based on synthetic aromatic hydrocarbons
unused insulating liquid
Published on 2022-07-11
2023-02-01 Implementation
State Administration for Market Regulation
Released by the National Standardization Administration
directory
Preface I
1 Scope 1
2 Normative references 1
3 Terms and Definitions 1
4 Marking and general delivery requirements2
4.1 Packaging and Shipping2
4.2 Flag 2
5 Sampling 2
6 Accuracy and Interpretation of Test Results 2
7 Specification for alkylbenzenes for electrical equipment 2
8 Specification for alkyldiphenylethanes for electrical equipment 3
9 Specification for alkylnaphthalenes for electrical equipment 4
10 Specification for methyl polyarylmethane for electrical equipment 5
11 Test method 6
11.1 Appearance 6
11.2 Density 6
11.3 Kinematic viscosity 6
11.4 Flash point 7
11.5 Pour point 7
11.6 Refractive Index and Specific Dispersion 7
11.7 Neutralization value 7
11.8 Chlorine content7
11.9 Water content 8
11.10 Corrosive sulfur 8
11.11 Breakdown Voltage 8
11.12 Dielectric Dissipation Factor, Relative Permittivity, and Volume Resistivity 8
11.13 Stability under electric field and ionization (gassing) 8
Appendix A (Informative) This document is compared with the structure number of IEC 60867.1993 9
Appendix B (informative) Technical differences between this document and IEC 60867.1993 and their reasons 10
foreword
This document is in accordance with the provisions of GB/T 1.1-2020 "Guidelines for Standardization Work Part 1.Structure and Drafting Rules of Standardization Documents"
drafted.
This document replaces GB/T 21221-2007 "Insulating liquids based on synthetic aromatic hydrocarbons, unused insulating liquids", and
Compared with GB/T 21221-2007, in addition to structural adjustment and editorial changes, the main technical changes are as follows.
a) The normative reference document GB/T 18612-2011 is added, and the chlorine content test method is modified from the biphenyl sodium reduction potentiometric titration method
It is the combustion oxidation microcoulometer method in GB/T 18612-2011 (see Chapter 2 and 11.8, 6.8 of the.2007 edition);
b) Changed normative references (see Chapter 2, Chapter 2 of the.2007 edition);
c) Adjust the required value of pour point in Table 4 from ≤-60°C to ≤-55°C (see Table 4, Table 4 of the.2007 edition);
d) Adjust the required value of volume resistivity in Table 4 from ≥1×1012Ω·m to ≥0.25×1012Ω·m (see Table 4,.2007 edition).
of table 4);
e) The titles of Chapter 8, Chapter 9, Chapter 10, Chapter 11 have been revised to correspond with Chapter 1 "Scope" (see Chapter 8, Chapter 9,
Chapter 10, Chapter 11, Chapter 8, Chapter 9, Chapter 10, Chapter 11 of the.2007 edition);
f) Deleted "Stability under electric field and ionization (gas evolution)" using GB/T 11142-1989 method and
The required value of GB/T 10065-2007 is revised to adopt the required value of Method A in GB/T 10065-2007 (see Table 1,
Table 2, Table 3 and Table 4, Table 1, Table 2, Table 3 and Table 4 of the.2007 edition);
(Gas evolution)" test method is changed from "measured according to GB/T 11142-1989 and GB/T 10065-2007" to "according to
GB/T 10065-2007 Method A Determination" (see 11.13, 6.13 of the.2007 edition).
This document is modified to adopt IEC 60867.1993 "Specification for unused insulating liquids based on synthetic aromatic hydrocarbons".
Compared with IEC 60867.1993, this document has more structural adjustments. This document and IEC 60867.1993 chapter numbering changes
See Appendix A for a list of comparisons.
Compared with IEC 60867.1993, this document has many technical differences. In the outer margins of the clauses involved, vertical
A single line (|) is marked. See Appendix B for a list of these technical differences and their reasons.
The following minimal editorial changes have been made to this document.
a) Deleted the paragraph "Key points gas chromatograph can be used for composition identification and impurity detection" in the introduction of IEC 60867.1993 "Chapter 3";
b) Deleted the Note in 6.7.1 of IEC 60867.1993;
c) Change the title "Part 1", "Part 2", "Part 3" and "Part 4" to "Table 1", "Table 2", "Table 3" and "Table 1", respectively.
In "Table 4", "Allowable values" were changed to "Required".
Please note that some content of this document may be patented. The issuing agency of this document assumes no responsibility for identifying patents.
This document is proposed by China Electrical Equipment Industry Association.
This document is under the jurisdiction of the National Technical Committee for Standardization of Insulating Materials (SAC/TC51).
This document is drafted by. Guilin Power Capacitor Co., Ltd., Changzhou Chensheng Insulation New Material Co., Ltd., Jiangxi Tianyi Special Oil
Co., Ltd., Jinzhou Yongjia Chemical Co., Ltd., State Grid Zhejiang Electric Power Company Electric Power Research Institute, Lindsay Meng Testing Technology Co., Ltd.,
Guangxi Nanbaote Electric Manufacturing Co., Ltd., Guilin Electrical Apparatus Research Institute Co., Ltd., Guangdong Power Grid Co., Ltd. Electric Power Research
Institute, Suzhou Guanlong Electromagnetic Wire Co., Ltd., Xi'an Jingzhongsheng Technology Co., Ltd., Yiwu Jiecheng Mould Co., Ltd., Shaanxi Guohongfu Testing Technology
Technology Co., Ltd., Guangdong Mingkai Technology Co., Ltd., Xi'an Kaijinzhe Testing Co., Ltd.
The main drafters of this document. Chen Song, Xu Jianhua, Bao Yiqing, Chen Ming, Shao Xianjun, Zhao Jie, Li Wei, Sun Yu, Xie Qi, Tang Shiping, Luo Chuanyong,
Qian Yihua, Fu Qiang, Gu Xinmei, Xiang Huaming, Pan Yongxian, Lin Hongsong, Wan Qinglan, Wu Caichun.
The previous versions of this document and its superseded documents are as follows.
---First published in.2007 as GB/T 21221-2007.
---This is the first revision.
Insulating liquids based on synthetic aromatic hydrocarbons
unused insulating liquid
1 Scope
This document specifies the marking and general delivery of several unused synthetic aromatic hydrocarbon insulating liquids used as insulating liquid media for electrical equipment
Requirements, sampling, technical specifications and test methods.
This document applies to virgin alkylbenzenes, diphenylethanes, alkylnaphthalenes and methyl polyarylates used as insulating liquid media for electrical equipment
Methane.
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 261 Determination of flash point Pensky-Martin closed cup method (GB/T 261-2021, ISO 2719.2016, MOD)
GB/T 507 Determination of breakdown voltage of insulating oil (GB/T 507-2002, IEC 156.1995, eqv)
GB/T 1884 Laboratory Determination of Density of Crude Oil and Liquid Petroleum Products (Densitometer Method) (GB/T 1884-2000, ISO 3675.
1998, eqv)
GB/T 3535 Determination of Pour Point of Petroleum Products (GB/T 3535-2006, ISO 3016.1994, MOD)
GB/T 5654 Measurement of relative permittivity, dielectric loss factor and DC resistivity of liquid insulating materials (GB/T 5654-
2007, IEC 60247.2004, IDT)
GB/T 10065-2007 Determination of gas evolution properties of insulating liquids under electrical stress and ionization (IEC 60628.1985,
MOD)
GB/T 18612-2011 Determination of Organic Chlorine Content in Crude Oil
GB/T 25961 Test method for corrosive sulfur in electrical insulating oil
GB/T 27750 Classification of insulating liquids (GB/T 27750-2011, IEC 61039.2008, IDT)
GB/T 30515 Determination of kinematic viscosity and dynamic viscosity calculation method of transparent and opaque liquid petroleum products (GB/T 30515-
2014, ISO 3104.1994, MOD)
GB/T 41146 Sampling method for insulating liquids (GB/T 41146-2021, IEC 60475.2011, IDT)
NB/T 42140 Determination of moisture by Karl Fischer automatic coulometric titration for oil-impregnated paper and oil-impregnated paperboard with insulating liquid (NB/T 42140-
2017, IEC 60814.1997, MOD)
SH/T 0205 Determination of refractive index and specific dispersion of electrical insulating liquids
3 Terms and Definitions
The following terms and definitions apply to this document.
3.1
alkylbenzenes
An insulating liquid consisting of a molecule consisting of a benzene ring and an alkyl group.
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