GB/T 7595-2017_English: PDF (GB/T7595-2017)
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Quality of transformer oils in service
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GB/T 7595-2017
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Quality of transformer oils in service
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GB/T 7595-2008
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Quality criteria of transformer oils in service
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Quality criteria of transformer oils in service
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| Standard ID | GB/T 7595-2017 (GB/T7595-2017) | | Description (Translated English) | Quality of transformer oils in service | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | F24 | | Classification of International Standard | 27.100 | | Word Count Estimation | 6,631 | | Date of Issue | 2017-05-12 | | Date of Implementation | 2017-12-01 | | Older Standard (superseded by this standard) | GB/T 7595-2008 | | Quoted Standard | GB/T 261; GB/T 264; GB/T 507; GB 2536; GB/T 5654; GB/T 6540; GB/T 6541; GB/T 7598; GB/T 7600; GB/T 7601; GB/T 8926-2012; GB/T 14542; GB/T 25961; GB/T 28552; DL/T 285; DL/T 385; DL/T 421; DL/T 423; DL/T 432; DL/T 703; DL/T 929; DL/T 1094; DL/T 1095; DL/T 1 | | Drafting Organization | Xi'an Thermal Research Institute Co., Ltd. | | Administrative Organization | National Electrification Standardization Technical Committee (SAC/TC 322) | | Proposing organization | China Electricity Council | | Issuing agency(ies) | General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, China National Standardization Administration Committee | | Summary | This standard specifies the quality standards for the oil used in mineral transformer oil and circuit breakers. This standard applies to the quality supervision of the mineral transformer oil and circuit breaker oil filled in the electrical equipment. This standard does not apply to mineral insulating oils used as impregnants in cables or capacitors. | | Standard ID | GB/T 7595-2008 (GB/T7595-2008) | | Description (Translated English) | Quality of transformer oils in service | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | E38 | | Classification of International Standard | 75.100 | | Word Count Estimation | 11,134 | | Date of Issue | 2008-09-24 | | Date of Implementation | 2009-08-01 | | Older Standard (superseded by this standard) | GB/T 7595-2000 | | Drafting Organization | Xi'an Thermal Power Research Institute Co., Ltd. | | Administrative Organization | China Electricity Council | | Regulation (derived from) | National Standard Approval Announcement 2008 No.16 (Total No.129) | | Proposing organization | China Electricity Council | | Issuing agency(ies) | Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China; Standardization Administration of China | | Summary | This standard specifies the operation of transformer oil and breaker oil should reach quality, inspection cycle. This standard applies to electrical equipment for Quality Supervision and filled with mineral oil transformer oil and circuit breakers in operation, the generator may refer to the use of oil. This standard does not apply to used as impregnating agent in the cable or capacitor mineral oil. | | Standard ID | GB/T 7595-2000 (GB/T7595-2000) | | Description (Translated English) | Quality criteria of transformer oils in service | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | E38 | | Classification of International Standard | 75.1 | | Word Count Estimation | 11,174 | | Date of Issue | 2000/4/3 | | Date of Implementation | 2000/12/1 | | Older Standard (superseded by this standard) | GB 7595-1987 | | Regulation (derived from) | Announcement of Newly Approved National Standards No. 16 of 2008 (No. 129 overall) | | Proposing organization | Economic and Trade Commission of the People Republic of China | | Issuing agency(ies) | State Quality and Technical Supervision |
GB/T 7595-2017
GB
NATIONAL STANDARD OF THE
PEOPLE’S REPUBLIC OF CHINA
ICS 27.100
F 24
Replacing GB/T 7595-2008
Quality of Transformer Oils in Service
ISSUED ON. MAY 12, 2017
IMPLEMENTED ON. DECEMBER 1, 2017
Issued by. General Administration of Quality Supervision, Inspection and
Quarantine of the People's Republic of China;
Standardization Administration of the People's Republic of
China.
3. No action is required - Full-copy of this standard will be automatically &
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Table of Contents
Foreword ... 3
1 Application Scope ... 5
2 Normative References ... 5
3 Technical Requirements ... 7
Foreword
This Standard was drafted in accordance with the rules given in GB/T 1.1-2009.
This Standard replaces GB/T 7595-2008, Quality of Transformer Oils in Service.
Compared with GB/T 7595-2008, the major changes of this Standard are as follows.
-- the application scope of the standard is modified;
-- the normative references are modified;
-- the standard for the quality of mineral transformer oils in service is modified;
-- the standard for the quality of breaker oils in service is modified;
-- the inspection items, such as chromaticity, and relevant quality indexes and test
methods are added;
-- part of test methods are modified;
-- the terms and definitions are deleted;
-- part of test items are deleted;
-- test cycles and test items are deleted;
-- informative Annex A “Maximum Viscosity of Transformer Oils at the Lowest Cold-
start Energizing Temperature” is deleted;
-- informative Annex B “Effects of Different Electrode Shapes and Operating
Methods on the Measured Values of Breakdown Voltage” is deleted;
-- informative Annex C “Anti-degradation Measures for Transformer Oils in Service”
is deleted.
This Standard was proposed by China Electricity Council.
This Standard shall be under the jurisdiction of the National Standardization Technical
Committee on Electrification (SAC/TC 322).
The major drafting organization of this Standard. Xi’an Thermal Power Research
Institute Co., Ltd.
The contributory drafting organizations of this Standard. China Petroleum Karamay
Lubricating Oil Research Institute, Jiangsu Electric Power Company Electric Power
Research Institute, State Grid Tianjin Electric Power Research Institute, Guangdong
Power Grid Co., Ltd. Electric Power Research Institute.
The main drafters of this Standard. Xiao Xiuyuan, Ma Shujie, Wang Juan, Meng
Quality of Transformer Oils in Service
1 Application Scope
This Standard specifies the quality standard for mineral transformer oils and beaker
oils in service.
This Standard applies to the quality and supervision of mineral transformer oils and
breaker oils in service, which are filled in electrical equipment.
This Standard does not apply to mineral insulating oils, which are used for cables or
condensers as impregnating compounds.
2 Normative References
The following referenced documents are indispensable for the application of this
document. For dated references, only the edition dated applies to this document. For
undated references, the latest edition of the referenced documents (including all
amendments) applies to This Standard.
GB/T 261, Determination of Flash Point – Pensky-Martens Closed Cup Method
GB/T 264, Petroleum Products – Determination of Acid Number
GB/T 507, Insulating Liquids – Determination of the Breakdown Voltage at Power
Frequency
GB 2536, Fluids for Electrotechnical Applications – Unused Mineral Insulating Oils
for Transformers and Switchgear
GB/T 5654, Insulating Liquids – Measurement of Relative Permittivity, Dielectric
Dissipation Factor and D.C. Resistivity
GB/T 6540, Petroleum Products – Determination of Colour
GB/T 6541, Petroleum Products – Mineral Oils – Determination of Interfacial
Tension of Oil against Water – Ring Method
GB/T 7598, Determination of Water-soluble Acid in Transformer and Turbine Oils in
Service by Colorimetric Method
GB/T 7600, Determination of Water Content in Transformer Oils in Service by
Coulometric Method
GB/T 7601, Determination of Water Content for Transformer and Turbine Oils in
Service by Gas Chromatographic Method
GB/T 8926-2012, Standard Test Method for Insolubles in Used Lubricating Oils
GB/T 14542, Guide for Maintenance and Supervision of Transformer Oil in Service
GB/T 25961, Standard Test Method for Corrosive Sulfur in Electrical Insulating Oils
GB/T 28552, Determination of Acid Number in Transformer Oils and Turbine Oils by
BTB Method
DL/T 285, Test Method for Corrosive Sulphur in Mineral Insulating Oils – Copper
Conductor Wrapped with Insulating Paper
DL/T 385, Determination of Electrostatic Charging Tendency of Transformer Oil
DL/T 421, Determination of Volume Resistivity of Power Oils
DL/T 423, Determination of Dissolved Gas Content in Insulating Oil – Method of
Vacuum Pressure Difference
DL/T 432, Determination of Particulate Contamination in Oil
DL/T 703, Determination of Dissolved Gas Content in Insulating Oil by Gas
Chromatography
DL/T 929, Determination of the Content in Insulating Oil and Lubricating Oil by
Infrared Spectrum Method
DL/T 1094, Guide to the Choice of Power Transformer Oil
DL/T 1095, Guide to on-site Determination of Electrostatic Charging Tendency of
Transformer Oil
DL/T 1096, Limited Value of Particular Pollutant of Transformer Oils
DL/T 1354, The Method of Flash Point of Power Oil by Microscale Continuously
Closed Cup Tester
DL/T 1355, Method for Determination of Furfural Content in Transformer Oil by
HPLC
NB/SH/T 0810, Gassing of Insulating Liquids under Electrical Stress and Ionization
NB/SH/T 0812, Mineral Insulating Oils – Method for the determination of 2-furfural
and Related Compounds
SH/T 0802, Determination of 2,6-bi-tert-butyl-paracresol in Insulating Oils
SH/T 0804, Detection of Corrosive Sulfur of Insulating Oils – Silver Strip Test
IEC 62697-1, Test Methods for Quantitative Determination of Corrosive Sulfur
......
GB/T 7595-2008
Quality of transformer oils in service
ICS 75.100
E38
National Standards of People's Republic of China
Replacing GB/T 7595-2000
In transformer oil quality
Posted 2008-09-24
2009-08-01 implementation
Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China
Standardization Administration of China released
Foreword
This standard replaces GB/T 7595-2000 "Quality Standards in transformer oil."
This standard compared with GB/T 7595-2000, main changes are.
--- Increase in the scope of the generator oil can refer to requirements, expanding the scope of the standard. Clearly it does not apply to electricity
Cable or capacitor is used as impregnating agent in mineral oil;
--- Original standard normative references were cut and increased;
--- Increased Chapter 3 Definition section;
--- Regulations implement the provisions of the sample collection method in accordance with GB/T 7597-2007;
--- Modify the operation of transformer oil quality standards;
--- Increased gassing and charging tendency quality indicators;
--- Increased gassing and charging tendency test method requirements;
--- Canceled a new standard for EHV transformer oil acceptance requirements terms;
--- Modify the original standard acceptance requirements for new oil breaker terms;
--- Modify the operation of the circuit breaker oil quality standards;
--- Modify the original standard voltage levels;
--- Retained the original standard 11 quality requirements;
--- Delete the original standard of dissolved gases in the oil component content requirements, specifically in accordance with GB/T 17623 and GB/T 7252 requirements
carried out;
--- Delete the original standard transformer oil product grades;
--- Increases the maximum viscosity informative appendix A minimum temperature of cold commissioning (LCSET) under the transformer oil, the pour point of the highest standard with the original
Correspondence between grades;
--- Retained the original standard in Appendix B of different electrode shapes and methods of operation on the breakdown voltage measured values;
--- Retained the original standard measures for preventing deterioration in Appendix C in transformer oil;
--- Reference to the GB 2536 "transformer oil" mandatory national standards of the revised draft (2007 draft) and IEC 60296.2003
"Electrical transformer fluid and the switching of unused mineral insulating oil."
This standard Annex A, Annex B, Annex C is informative appendix.
This standard is proposed and managed by the China Electricity Council.
This standard was drafted. Xi'an Thermal Power Research Institute Co., Ltd.
The main drafters of this standard. Meng Yuchan, Liu Luo.
This standard replaces the standards previously issued as follows.
--- GB/T 7595-1987, GB/T 7595-2000.
In transformer oil quality
1 Scope
This standard specifies the circuit breaker in transformer oil and the oil should reach the quality, inspection cycle.
This standard applies to electrical equipment Quality Supervision charged mineral oil transformers and circuit breakers in the operation of oil, dynamo oil can refer to
use. This standard does not apply to used as impregnating agent in the cable or capacitor mineral oil.
2 Normative references
The following documents contain provisions which, through reference in this standard and become the standard terms. For dated references, subsequent
Amendments (not including errata content) or revisions do not apply to this standard, however, encourage the parties to the agreement are based on research
Whether the latest versions of these documents. For undated reference documents, the latest versions apply to this standard.
GB/T 261 Flash Point by Pensky - Martens closed cup method (GB/T 261-2008, ISO 2719.2002, MOD)
GB/T 262 Petroleum products - Determination of aniline point method (GB/T 262-1988, neq ISO 2977. 1974)
GB/T 264 Petroleum products - Determination of acid number (GB/T 264-1983, neqASTMD974)
GB/T 265 Petroleum products - Determination of kinematic viscosity and dynamic viscosity meter method
GB/T 507 insulating oil breakdown voltage measurement method (GB/T 507-2002, eqv IEC 156.1995)
GB/T 511 Petroleum products and additives - Determination of mechanical impurities (gravimetric method) (GB/T 511-1988, neqГОСТ6370.
1959)
GB 2536 transformer oil (GB 2536-1990, neqIEC 60296. 1982)
GB/T 5654 Insulating liquids Measurement of relative permittivity, dielectric dissipation factor and dc resistivity (GB/T 5654-
2007, IEC 60247.2004, IDT)
GB/T 6541 Petroleum products - Determination of interfacial tension of water (ring method)
GB/T 7252 transformer oil dissolved gas analysis and determine guidelines (GB/T 7252-2001, neqIEC 60599.1999)
GB/T 7597 Power oil (transformer oil, turbine oil) sampling method
GB/T 7598 in transformer oil, turbine oil water-soluble acid assay (colorimetry)
GB/T 7600 in transformer oils Determination of water content (coulometry)
GB/T 7601 in transformer oils determination of moisture content (gas chromatography)
GB/T 7602 running turbine oil, transformer oil T501 antioxidant content assay (spectrophotometry)
GB/T 14542 running transformer oil maintenance guidelines
GB/T 17623 gases dissolved in insulating oil component content of the gas chromatographic method (GB/T 17623-1998, neqIEC 567.
1992)
GB 50150 works of electrical installations electrical equipment handover test standard
DL/T 419 Power oil Terminology
DL/T 421 Determination of volume resistivity of insulating oil
DL/T 423 Determination of insulating oil vacuum pressure method gas content
DL/T 429.6 Test Method for Power System oil filler opening cup run aging assay
DL/T 429.7 Test Method for Power System oily sludge precipitation assay
DL/T 429.9 Test Method for Power System oil insulating oil dielectric strength measurement method
......
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