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GB 20840.1-2010 English PDF

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GB 20840.1-2010: [GB/T 20840.1-2010] Instrument transformers -- Part 1: General requirements
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GB 20840.1-20101379 Add to Cart 8 days [GB/T 20840.1-2010] Instrument transformers -- Part 1: General requirements Valid

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Basic data

Standard ID: GB 20840.1-2010 (GB20840.1-2010)
Description (Translated English): [GB/T 20840.1-2010] Instrument transformers -- Part 1: General requirements
Sector / Industry: National Standard
Classification of Chinese Standard: K41
Classification of International Standard: 29.180
Word Count Estimation: 53,573
Date of Issue: 2010-09-02
Date of Implementation: 2011-08-01
Quoted Standard: GB 311.1; GB/T 2421.1; GB/T 2423.23; GB/T 2423.55; GB 4208-2008; GB/T 4798.3; GB/T 4798.4; GB/T 5169.2; GB/T 5169.9; GB/T 5169.18; GB/T 5465.2; GB/T 7354; GB 7674; GB/T 8905; GB/T 11021; GB/T 11022; GB/T 11604; GB/T 15022.1; GB/T 15022.2; GB/T 15022.4; GB/T 16927.1; GB/T 17623; GB/T 20138-2006; GB/T 21221; GB/T 21429; JB/T 5895; IEC 60296; IEC 60376; IEC 61634; IEC 62155; IEC 62271-2; IEC GUIDE 109; ISO 3231; GB/T 2423.17
Adopted Standard: IEC 61869-1-2007, MOD
Regulation (derived from): Announcement of Newly Approved National Standards No. 4 of 2010 (total 159)
Issuing agency(ies): General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, Standardization Administration of the People's Republic of China
Summary: This Chinese standard relates to general technical requirements. For each type of transformer, its product standards by the section dedicated technical requirements and related parts.

GB 20840.1-2010: [GB/T 20840.1-2010] Instrument transformers -- Part 1: General requirements

---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
Instrument transformers.Part 1. General requirements ICS 29.180 K41 National Standards of People's Republic of China Transformers - Part 1. General technical requirements (IEC 61869-1.2007, MOD) Issued on. 2010-09-02 2011-08-01 implementation Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China Standardization Administration of China released

Table of Contents

Introduction Ⅲ Introduction Ⅳ 1 Scope 1 2 Normative references 1 3 Terms and definitions 2 3.1 General definitions 2 3.2 for electrical insulation rating definitions 3 3.3 For definitions of current or voltage rating of 4 3.4 concerning the definition of accuracy 4 3.5 For definitions of the other rating 4 3.6 concerning the definition of gas-insulated 5 3.7 Symbol and Name 6 4 Normal and special service conditions 6 4.1 General requirements 6 4.2 normal conditions of use 6 4.3 Special conditions 7 4.4 Ground 8 8 5 Rating 5.1 General requirements 8 8 5.2 Highest voltage for equipment 5.3 Rated insulation level 9 5.4 rated frequency 11 5.5 rated output 11 Accuracy class 5.6 rated 11 6 design and construction 11 6.1 Equipment required liquid with 11 6.2 Equipment used in gas requirements 11 6.3 Equipment used in the solid material in claim 12 Temperature rise of 6.4 pairs of parts and components of claim 12 Ground equipment requirements 14 6.5 6.6 external insulation requirements 14 6.7 the mechanical strength requirements 14 6.8 times a truncated end impact 15 6.9 Internal arc fault protection requirements 15 6.10 Enclosure rating 16 6.11 Electromagnetic compatibility (EMC) 16 6.12 Corrosion 18 6.13 mark 18 Fire hazard 18 6.14 7 Test 19 7.1 General 19 7.2 Type tests 20 7.3 Routine tests 24 27 7.4 Special tests 7.5 Sampling Test 31 8 transport, storage, installation, operation and maintenance of Rule 31 9 Security 32 The impact on the natural environment of the product 10 32 This section in Appendix A (informative) reg number and IEC 61869-1.2007 33 reg number control Annex B (informative) of this section with IEC 61869-1.2007 technical differences and their reasons 34 Appendix C (Informative Appendix) IEC 61869-1.2007 standard primary terminals rated insulation level and an altitude of 36 C.1 highest voltage for equipment 36 C.2 first end 36 rated insulation level C.3 truncated lightning impulse voltage 37 C.4 rated frequency 37 C.5 elevation 37 C.6 mechanical strength 38 Annex D (informative) Fire hazard 40 D.1 fire hazard 40 D.2 Fire hazard testing 40 Appendix E (normative) sample confirmed 41 E.1 Information 41 E.2 pattern 41 Annex F (informative) Sampling test 42 F.1 sampling test definitions 42 F.2 sampling test 42 Annex G (informative) transport, storage, installation, operation and maintenance of the rule 43 G.1 General requirements 43 G.2 transport, storage and installation conditions 43 G.3 Installation 43 G.4 44 runs G.5 maintenance 44 G.6 fault reporting 45 References 47

Foreword

Part 1, Chapter 2, Section 3, Chapter 4 and 7.4, 7.5 and Chapter 8 are recommended, the rest are mandatory. GB 20840 "transformer" intends divided into the following sections. --- Part 1. Common technical requirements; --- Part 2. Current Transformer; --- Part 3. electromagnetic voltage transformer; --- Part 4. combined transformer; --- Part 5. Capacitor voltage transformers; --- Part 6. Current transformers for transient performance; --- Part 7. Electronic voltage transformers; --- Part 8. Electronic current transformers; --- Part 9. Additional requirements for electronic transformers and digital interface; --- Part 10. Low-power stand-current sensor. This is Part 1 GB 20840's. The partial modification using IEC 61869-1.2007 "Transformers - Part 1. General technical requirements" (in English). This section according to IEC 61869-1.2007 draft. This section lists the reg number and IEC 61869-1 in Appendix A. Chapter 2007 Article number of the control list. In using IEC 61869-1.2007 when this part has made several modifications. For technical differences have been incorporated into the text, and covered them And the terms of the margin identified by a single vertical line. We give a list of these technical differences and their causes in Appendix B for reference. For ease of use, this section of IEC 61869-1.2007 made the following editorial changes. a) "This standard" be replaced by "this section"; b) Remove the IEC 61869-1.2007 Foreword and references; c) introductory phrase of the second chapter in GB/T 1.1-2000 requirements had been revised; d) by the decimal point "," to "."; e) Graphical symbols for electrical part according to GB/T 4728.6-2000 been adjusted. Appendix E to this part of the normative appendix, Appendix A, Appendix B, Appendix C, Appendix D, Appendix F and Appendix G is an informative annex. This part is proposed by the China Electrical Equipment Industrial Association. This part of the National Standardization Technical Committee transformers (SAC/TC222) centralized. This section is drafted. Shenyang Transformer Research Institute, State Grid Electric Power Research Institute, the legendary Electric (Shenyang) Co., Ltd, which Ata freshman Mutual Electric Co., Ltd., Zhongshan City, Thailand Electric Co., Ltd., Nanjing NARI-RELAYS Electric Co., Ltd., Nissin Electric (Wuxi) Co., Ltd., North Beijing Guodian Siwei Electric Power Technology Co., Kangjia TBEA Shenyang Transformer Co., Ltd., Jiangsu Jingjiang Transformer Co., Ltd., Dalian Transformer Co., Ltd., Ningbo Huatong Transformer Manufacturing Co., Ltd., Guodian Nanjing Automation Co., Ltd., Nanjing Sunning Photoelectric automation Co., Ltd. Ningbo with Wo Transformer Co., Ltd., Xi'an with peacekeeping Technology Development Co., Ltd., Beijing North Yi Electrical Co., Ltd., Jiangsu Su Siyuan Hertz Transformer Co., Ltd. The main drafters of this section. cotton emperor, Wei Zhaohui, Xiaoyao Rong, Zhang Zhong country Yeguo Xiong, Yin Shian, Lijun Fang, Wu Zhen Zhi, Zhang Jun, An Zuoping, Xu Chao, Huangde Xiang, Sun Min, Su Sea surgery, Liu Yufeng, Caoxiao E, He Chunan, Chen Lin, Xu could have, Dong Ping, Yang Guiping, MAO Li-xin, Zhang Shaobo.

Introduction

Since the IEC /TC38 standards system of IEC 60044 series has been previously adjusted to the current IEC 61869 series, in order to better Adoption of international standards, the National Standardization Technical Committee transformers (SAC/TC222) decided that the previous national standards of the individual CT Press relations and IEC 61869 series of standards correspond to restructure, convert part of common technical requirements and special technical requirements of each part, And a new set of national standards for transformer configuration. New national standards for transformers intended to form the overall situation is as follows. General part of the standard number and name Special section Standard Dedicated part of the standard name corresponding Original Standard GB 20840.1 Transformers General technical requirements GB 20840.9 Additional requirements for electronic transformer and digital interface GB 20840.2 current transformers GB 1208 GB 20840.3 electromagnetic voltage transformer GB 1207 GB 20840.4 combined transformer GB 17201 GB 20840.5 capacitor voltage transformer GB/T 4703 GB 20840.6 current transformers for transient performance GB 16847 GB 20840.7 electronic voltage transformer GB/T 20840.7 GB 20840.8 electronic current transformer GB/T 20840.8 GB 20840.10 low power independent current sensor This section contains the individual transformers previous national standards for all common technical requirements for the content, technology and added the following new elements. --- Gas-insulated transformer requirements; --- Special test supplements; --- Internal arc fault protection requirements; --- Housing protection grade requirements; --- Corrosion resistance requirements; --- Consider safety and environmental requirements. This part as the basis for part of the new national standards for transformer first enacted. As a general technical requirements of this part of the transformer, In cooperation with relevant technical requirements of section dedicated transformer combination before using. Transformers - Part 1. General technical requirements

1 Scope

GB 20840 for this section applies to electrical measuring instruments or electrical protective device, rated frequency of 15Hz ~ 100Hz, new Analog or digital manufacturing output transformer. This section contains only general technical requirements. For each type of transformer, its products by the standards of this section and the relevant technical requirements of the special unit Grouped.

2 Normative references

The following documents contain provisions which, through reference in this Part of GB 20840, constitute provisions of this part. For dated reference documents Member, all subsequent amendments (not including errata content) or revisions do not apply to this section, however, encouraged to reach under this section Parties to research agreement to use the latest versions of these documents. For undated reference documents, the latest versions apply to this section. GB 311.1 voltage power transmission equipment insulation coordination (GB 311.1-1997, neq IEC 60071-1.1993) GB/T 2421.1 electric and electronic products environmental testing Overview and Guide (GB/T 2421.1-2008, IEC 60068-1. 1988, IDT) GB/T 2423.17 Environmental testing for electric and electronic products Part 2. Test methods - Test Ka. Salt Spray (GB/T 2423.17- 2008, IEC 60068-2-11. 1981, IDT) GB/T 2423.23 Environmental testing for electric and electronic products Test Q. Sealing (GB/T 2423.23-1995, idtIEC 60068-2- 17.1994) GB/T 2423.55 Environmental testing for electric and electronic products Part 2. Test Environment Test Eh. Hammer tests (GB/T 2423.55- 2006, IEC 60068-2-75.1997, IDT) GB 4208-2008 housing protection (IP Code) (IEC 60529.2001, IDT) GB/T 4798.3 application of electric and electronic products environmental conditions - Part 3. Stationary use at weather protected locations (GB/T 4798.3- 2007, IEC 60721-3-3.2003, MOD) GB/T 4798.4 application of electric and electronic products environmental conditions - Part 4. No fixed workplace climate protection use (GB/T 4798.4- 2007, IEC 60721-3-4.1995, MOD) GB/T 5169.2 Fire hazard testing for electric and electronic products - Part 2. Guidance for assessing the fire hazard - General (GB/T 5169.2- 2002, idtIEC 60695-1-1.1999) GB/T 5169.9 Fire hazard testing for electric and electronic products - Part 9. Guidance for assessing the fire hazard of preselection testing procedures to make By (GB/T 5169.9-2006, IEC 60695-1-30.2002, IDT) GB/T 5169.18 Fire hazard testing for electric and electronic products - Part 18. Fire risk of poisoning, will be reduced to electrical and electronic products Minimum guidelines General (GB/T 5169.18-2005, IEC 60695-7-1.1993, IDT) GB/T 5465.2 Graphical symbols for electrical equipment - Part 2. Graphical symbols (GB/T 5465.2-2008, IEC 60417DB. 2007, IDT) GB/T 7354 partial discharge measurements (GB/T 7354-2003, IEC 60270.2000, IDT) GB 7674 rated voltage of 72.5kV and above the gas-insulated metal-enclosed switchgear (GB 7674-2008, IEC 62271- 203.2003, MOD) GB/T 8905 sulfur hexafluoride gas in electrical equipment management and testing guidelines (GB/T 8905-1996, neq IEC 60480. 1974) GB/T 11021 heat-resistant electrical insulation classification (GB/T 11021-2007, IEC 60085.2004, IDT) GB/T 11022 common technical requirements for high-voltage switchgear and control equipment standard (GB/T 11022-1999, eqvIEC 60694.1996) GB/T 11604 high-voltage electrical equipment radio interference test method (GB/T 11604-1989, eqvCISPR18-1. 1982, CISPR18-2. 1986) GB/T 15022 (all parts), electrical insulation resin based reactive compounds (IEC 60455, MOD) GB/T 16927.1 High-voltage test techniques - Part 1. General test requirements (GB/T 16927.1-1997, eqvIEC 60060-1. 1989) GB/T 17623 gases dissolved in insulating oil component content of the gas chromatographic method (GB/T 17623-1998, neq IEC 60567. 1992) GB/T 20138-2006 electrical equipment enclosures against external mechanical impact protection rating (IK Code) (IEC 62262.2002, IDT) GB/T 21221 with insulating liquids based on synthetic aromatic hydrocarbons unused insulating liquids (GB/T 21221-2007, IEC 60867.1993, MOD) GB/T 21429 outdoor and indoor electrical equipment hollow composite insulators definitions, test methods, acceptance criteria and design recommendations (GB/T 21429-2008, IEC 61462.1998, MOD) JB/T 5895 Guidelines for the Use dirty areas insulator (JB/T 5895-1991, neq IEC 60815. 1986) IEC 60296 Electrical transformers and switchgear fluid unused mineral insulating oils IEC 60376 electrical equipment with sulfur hexafluoride (SF6) technical grade specification IEC 61634 high-voltage switchgear and control equipment, high-voltage switchgear and control equipment of sulfur hexafluoride (SF6) use and management of IEC 62155 rated voltage exceeding 1000V electrical equipment with pressurized and non-pressurized hollow porcelain and glass insulators IEC 62271-2 high-voltage switchgear and control equipment Part 2. Rated voltage 72.5kV and above the seismic resistance assessment IEC Guide 109 environmental component contained in electrotechnical products Standard ISO 3231 Paints and varnishes of resistance to humid atmospheres containing sulfur dioxide measurement

3 Terms and Definitions

The following terms and definitions apply to this section. 3.1 General definitions 3.1.1 Transformer instrumenttransformer Aims to measuring instruments, meters and protection or control devices or similar electrical information signal is transmitted transformer. 3.1.2 Housing enclosure To provide protection for the intended use and the type of grade shell-shaped member. 3.1.3 Primary terminals primaryterminals It is converted terminal voltage or current is applied. 3.1.4 Secondary terminals secondaryterminals The measuring instruments, meters and protection or control devices or similar electrical terminals transmit information signal. 3.1.5 Secondary circuit secondarycircuit Transformer secondary circuit terminals receiving external information signal supplied. 3.1.6 Line section Transformer conductive member, it and other similar pieces of insulation and air terminals. 3.2 For definitions of the electrical insulation rating 3.2.1 Maximum system voltage highestvoltageforasystem Usys Under normal operating conditions, the system at any point in time the highest value of any relative phase operating voltage (rms). 3.2.2 Highest voltage for equipment highestvoltageforequipment Um Highest side opposite phase voltage rms value, the device according to its design and its related equipment insulation voltage standard Click to specify other characteristics. 3.2.3 Rated insulation level ratedinsulationlevel A set of voltage values which characterizes the insulation transformer can withstand compressive strength. 3.2.4 Isolated neutral system isolatedneutralsystem In addition to high-impedance neutral point grounding protection or measurement of external, non-neutral grounding system. 3.2.5 Resonant grounding system (via arc suppression coil grounding system) resonantearthedsystem By one or more neutral point reactance grounding system, in order to substantially compensate for a single capacitive component of earth fault current. Note. in resonance grounding system, the residual fault current is limited to allow the air in self-extinguishing arc fault. 3.2.6 Ground fault factor earthfaultfactor For certain system arrangement, when a ground fault occurs at any point the system affect one or more phases, the three-phase system in a given location Home, its non-fault phase is relatively highest frequency voltage root mean square value relative to the position than the root-mean-square value of the power frequency voltage when there is no fault. 3.2.7 Neutral grounding system earthedneutralsystem Neutral grounding or through a small resistance or reactance grounding system, the resistance or reactance value should be small enough to suppress the transient oscillations, but also to Sufficient current available ground fault protection. a) given the location of three-phase neutral point effectively grounded system, it means that the point of ground fault factor not exceeding 1.4 system. Note. If the whole system is arranged in the ratio of anti-electric and positive sequence reactance is less than 3 zero-sequence and zero-sequence resistance to positive-sequence reactance is less than 1, the general conditions could get. b) given the location of the three-phase neutral non-effectively grounded system, it means that the point of ground fault factor exceeds 1.4 system. 3.2.8 Neutral grounding system solidlyearthedneutralsystem Solidly grounded neutral point. 3.2.9 Neutral point impedance grounding system impedanceearthedneutralsystem Neutral ground through an impedance to limit the earth fault current system. 3.2.10 Exposed installation exposedinstalation A mounting device will suffer from atmospheric overvoltage. NOTE. This installation is usually directly or via a short cable connected to overhead transmission line. 3.2.11 Unexposed install non-exposedinstalation A mounting device does not suffer from atmospheric overvoltage. NOTE. This installation is usually connected to the underground cable network. 3.3 For definitions of current or voltage rating See each specific part of the standard. 3.4 concerning the definition of accuracy 3.4.1 The actual ratio actualtransformationratio The actual primary voltage or secondary voltage or current and the actual current ratio. 3.4.2 Rated transformation ratio ratedtransformationratio kr Rated primary or secondary voltage or current ratio of current and rated voltage. 3.4.3 The ratio difference ratioerror Transformer in the measurement due to the actual transformation ratio is not equal to the rated transformation ratio error introduced. 3.4.4 Retardation phasedisplacement Δφ A voltage or current phasor phasor and phasor secondary voltage or current phasor phase phasor direction according to the ideal phase transformer Difference to zero selected. If the secondary voltage or current phasor phasor advance a voltage or current phasor phasor, the phase difference is positive. It is usually used arc minutes or PCT FIG. Note 1. This definition is correct only when the voltage or current sine wave. Note 2. The electronic transformer may be due to digital data transmission and digital signal processing delay introduced. 3.4.5 Accuracy class accuracyclass Of transformer given level, it represents the difference between the ratio and phase under specified conditions of use remains within prescribed limits. 3.4.6 Load burden Secondary circuit admittance (or impedance), with Siemens (or ohmic) and power factor indicates. Note. The load is usually depending on the number of power in VA it said it is in a predetermined power factor and rated secondary voltage or current lessons. 3.4.7 Rated load ratedburden Accuracy class requirements of this part is based on the load value. 3.4.8 Rated output ratedoutput Sr Rated secondary voltage or current time and then there is the rated load, supplied transformer seco......
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