GB 311.1-2012 English PDF

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GB 311.1-2012: [GB/T 311.1-2012] Insulation co-ordination -- Part 1: Definitions, principles and rules
Status: Valid

GB 311.1: Historical versions

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB 311.1-2012	839	Add to Cart	6 days	[GB/T 311.1-2012] Insulation co-ordination -- Part 1: Definitions, principles and rules	Valid
GB 311.1-1997	639	Add to Cart	5 days	Insulation co-ordination for high voltage transmission and distribution equipment	Obsolete
GB 311.1-1983	RFQ	ASK	3 days	Insulation co-ordination for high voltage transmission and transformation equipments	Obsolete

Similar standards

GB/T 25095 GB 1094.1 GB/T 8286 GBZ/T 311 GB/T 311.3 GB/T 311.2

Basic data

Standard ID: GB 311.1-2012 (GB311.1-2012)
Description (Translated English): [GB/T 311.1-2012] Insulation co-ordination -- Part 1: Definitions, principles and rules
Sector / Industry: National Standard
Classification of Chinese Standard: K40
Classification of International Standard: 29.020
Word Count Estimation: 32,341
Older Standard (superseded by this standard): GB 311.1-1997
Quoted Standard: GB/T 311.2; GB/T 2900.19-1994; GB/T 11022; GB 11032; GB/T 16927.1; GB/T 26218.1; IEC 60060-1-2010; IEC 60071-2; IEC 60721-2-3
Adopted Standard: IEC 60071-1-2006, MOD
Regulation (derived from): National Standards Bulletin No. 13 of 2012
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 provides three-phase AC system voltage power transmission equipment and facilities are relatively insulated, interphase insulation and vertical insulation rated withstand voltage selection principle that these devices standard rated

GB 311.1-2012: [GB/T 311.1-2012] Insulation co-ordination -- Part 1: Definitions, principles and rules

---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.
Insulation co-ordination.Part 1. Definitions, principles and rules ICS 29.020 K40 National Standards of People's Republic of China Replacing GB 311.1-1997 Insulation coordination Part 1. Definitions, principles and rules (IEC 60071-1.2006, MOD) Published 2012-06-29 2013-05-01 implementation Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China Standardization Administration of China issued

Preface Ⅰ 1 Scope 1 2 Normative References 1 Normal and special conditions 3 2 Terms and definitions 4 2 5 9 Symbols and abbreviations 6 with the insulation 10 Withstand voltage test of claim 7 20 Air gap Annex A (normative) to ensure a predetermined impulse withstand voltage of 23 Annex B (normative) altitude correction factor 26

Foreword

All technical content in this section are mandatory, the rest are recommended. GB 311 "Insulation coordination" is divided into four parts. --- Part 1. Definitions, principles and rules; --- Part 2. insulated high voltage transmission and distribution equipment using guidelines; --- Part 3. HVDC station with an insulating program; --- Part 4. Calculation conductive network is simulated and the insulation coordination. This part is the first part of 1 GB 311. This section drafted in accordance with the rules GB/T 1.1-2009 given. This section modify using IEC 60071-1.2006 and IEC 60071-1Aml.2010 "Insulation coordination - Part 1. Definitions, principles and rules then". This section is GB 311.1-1997. Revision "Insulation coordination Part 1 definitions, principles and rules" of. This section compared with GB 311.1-1997, in addition to editorial changes Technical changes are as follows. --- an increase of related terms (see Chapter 4); --- shows the principle of determining the program and relevant voltage insulation coordination (see 6.2, FIG. 1); --- shows representative over-voltage waveform and parameters (see 6.3); --- to increase the insulation level Um 1100kV and 800kV power transmission apparatus (see Table 3); --- increased Appendix A. to ensure the withstand voltage air gap of a predetermined impact; --- Added Appendix B. altitude correction factor, the adoption of IEC 60071-2 formulas and curves. This part of IEC 60071-1.2006 and 60071-1Aml IEC .2010 main differences are as follows. --- according to the provisions of GB/T 1.1-2009, the standard language and presentation format has been modified; --- deleted international standards foreword, preface adds this standard; --- IEC 60071-1 frequency range of 48Hz ~ 62Hz, 60Hz to take into account China's power grid does not apply, it will be set at a frequency range 45Hz ~ 55Hz, so as to conform to the GB/T 16927.1 (see 4.18.1); --- addition to the standard part of the standard rated withstand voltage value series (see 6.7, 6.8); --- standard insulation level adjustment (see Table 2, Table 3); --- increases the different types of power transmission equipment rated withstand voltage (see Table 4, Table 5 and Table 6). --- When standard impulse withstand voltage test apparatus for non-self-restoring insulation and Recovery insulating coexist, preferred GB/T 16927.1 The withstand voltage test procedure B (see 7.3). --- Added Appendix B. altitude correction factor, the adoption of IEC 60071-2 formulas and curves. This portion of the main differences between the terms of the above-described according to IEC 60071-1 by a single vertical line has its outer margin position (|) It was marked. This partial replacement GB 311.1-1997 "Insulation coordination Part 1. Definitions, principles and rules." This section was proposed by China Electrical Equipment Industrial Association. This part of the National Standardization Technical Committee and the high voltage insulation test technique with (SAC/TC163) centralized. This section is drafted. Xi'an High Voltage Apparatus Research Institute, State Grid Electric Power Research Institute. Participated in the drafting of this section. Kunming Electric Apparatus Research Institute, China Electric Power Research Institute switches, Henan high level of electrical Co., Company, Baoding Tianwei Electric Co., Shandong Electric Power Research Institute, Research Institute pilot power Hunan, PTD intermediate pressure portion, Shaanxi Western Power Research Institute, the National Insulator arrester Quality Supervision and Inspection Center, Sunrise Holdings Limited, Huayi Electric Group Co., Ltd., Cooper Nature (Ningbo) Electric Co., Ltd., Guangzhou Baiyun Electric Equipment Co., Ltd., China Southern Power Grid Technology Research Center, the Jiangxi Provincial Power scientific research Hospital, School of Electrical Engineering, Xi'an Jiaotong University, Hangzhou Electric Co., open, Shenyang Transformer Research Institute, Hubei Electric Power Test & Research Institute, Shenzhen Institute of Electrical Science. The main drafters of this section. Wang Jiansheng, given Xie Valley, Choi Dong, Zhou Peihong, Jia Tao, Guo Jie, Li Shicheng, Dai Min, He Huiwen, Huo Feng. This part of the drafters participate. Wang Ting, Zhao Lei, Zhou Qiongfang, Kong Xiangjun, Yan Guan Xing, Zhang Jianxin, Zhang joy, Guo Zhihong, Zhou Weihua, Zhang Deqin, Zhang Peng, Peng Wei, Shi Weijian, Pan Yongcheng, I wish the store spring, Liu Cheng school, Yang Chengmao, Lu Jin Zhuang, Cai Hansheng, Cui Jin Ling, Tong morale, Guo Jie, Zhou Hongdong, Li Shicheng, Deng Wanting, Lin Zhiwei, Deng Yonghui, Xiaomin Ying. This section replaces the following previously issued as follows. --- GB 311-1964, GB 311.1-1983, GB 311.1-1997. Insulation coordination Part 1. Definitions, principles and rules

1 Scope

This section provides a relatively high voltage transmission equipment and facilities insulated three-phase AC system, and the vertical phase insulation insulation rated Selection principle withstand voltage, the predetermined standard rated withstand voltage of these devices, and is given a series of standard rated withstand voltage, rated On principle withstand voltage should be selected from the series. This section applies to the nominal voltage of more than 1kV three-phase AC system. Select the rated withstand voltage should be associated with the highest voltage of the device. The association is only for the purpose of insulation fit. This section does not Including requirements for personnel safety. This principle also applies to the insulating part with the transmission line, but the withstand voltage value can be a predetermined portion of the present standard rated withstand Different voltages. Standards in the development of various devices, should be based on the requirements of this section, adapted to a predetermined rated withstand voltage of such equipment and test procedures. NOTE. To clarify the rules given in this insulating fitted in GB/T 311.2 "Guidelines for the Use", the highest voltage device and especially standard rated withstand voltage The relationship between. If the same device sets a voltage corresponding to the highest standard rated withstand voltage, given a set of criteria to select the best rated withstand voltage The guidelines. 1.1 Scope This section applies to the highest voltage device above 1kV three-phase AC power system used in the following power transmission indoors and outdoors equipment. a) Transformer. power transformers, shunt reactors, current limiting reactors, Petersen coil and the electromagnetic voltage transformer, current transformer; b) high-voltage electrical categories. circuit breaker, disconnecting switch, a load switch, earth switch, fuse, prefabricated substation, closed switch to Preparation, enclosed switchgear, a combination of electrical appliances; c) power capacitors, the coupling capacitor (capacitor voltage transformer comprising a), shunt capacitor, AC filter capacitor; d) high-voltage power cable; e) post insulators, wall bushing and the like. 1.2 NA range a) mounted on the insulation with severe contamination or harmful gases, vapors, chemical equipment in case of deposits; b) Relative humidity is high and condensation prone indoor applications device.

2 Normative references

The following documents for the application of this document is essential. For dated references, only applies to the version dated paper Pieces. For undated references, the latest edition (including any amendments) applies to this document. GB/T 311.2 Insulation coordination Part 2. insulated high voltage transmission and distribution equipment using the guidelines (IEC 60071-2.1996, EQV) GB/T 2900.19-1994 technical Electrotechnical term high voltage test and insulation coordination (IEC 60071-1.1993, NEQ) GB/T 11022 common technical requirements voltage switchgear and control equipment standard (GB/T 11022-2011, IEC 62271-1. 2007, MOD) GB 11032 no AC MOA (GB 11032-2010, IEC 60099-4.2006, MOD) GB/T 16927.1 High Voltage Test Techniques - Part 1. General test requirements (GB/T 16927.1-2011, IEC 60060-1. 2010, MOD) Selection and dimensioning of GB/T high-voltage insulators for use under condition determining contamination 26218.1 Part 1. Definitions, general information, and Principles (GB/T 26218.1-2010, IEC /T S60815-1.2008, MOD) IEC 60060-1.2010 High Voltage Test Techniques - Part 1. General Definitions and test requirements (High-voltagetesttech- niques-Part 1. Generaldefinitionsandtestrequirements) Insulation coordination IEC 60071-2Am1Ed.3.0 Part 2. Application guide (Insulationco-ordination-Part 2. Applicationguide) Part IEC 60721-2-3 Classification of environmental conditions 2. Natural Environment Section 3. Pressure (Classificationofenvi- ronmentalconditions-Part 2-3. Environmentalconditionsappearinginnature-Airpressure) Normal and special conditions 3 3.1 normal environmental conditions Withstand voltage selected from Table 2 and Table 3 below normal environmental conditions. a) ambient air temperature does not exceed 40 ℃ and measured to 24h average does not exceed 35 ℃. Minimum ambient air temperature is divided into three Level. -10 ℃, -25 ℃ and -40 deg.] C; b) altitude does not exceed 1000m; c) ambient air is not significantly dust, smoke, corrosive gases, vapors or salt contamination. Filthy filthy grade level does not exceed C (See GB/T 26218.1); d) condensation and deposition typically occurs. Consider the sediment appears to dew, condensation, fog, rain, snow or frost forms. 3.2 standard reference atmospheric conditions Standardized withstand voltage applicable to the standard reference atmospheric conditions. a) Temperature. t0 = 20 ℃; b) Pressure. p0 = 101.3kPa (1013mbar); c) Absolute humidity. h0 = 11g/m3. 3.3 Special environmental conditions 3.3.1 Test Voltage ambient air temperature is higher than 40 ℃ apparatus, the outer insulation in the dry state should take this nominal section Withstand voltage value is multiplied by the temperature correction factor KT. KT = 1 0.0033T (-40) Where. T --- ambient air temperature, ℃. 3.3.2 For altitudes above 1000m, 4000m, but the device does not exceed the dielectric strength of the insulation shall be outer altitude correction, the correction See Appendix B. 3.4 grounding equipment for power system neutral point The highest voltage 126kV active or non-effectively grounded system (direct) grounding system; maximum voltage of 126kV and above should have Effect (direct) grounding system. Terms and definitions 4 The following terms and definitions apply to this document. 4.1 Insulation coordination insulationco-ordination After considering over-voltage protection measures adopted, the decision on the possible role of voltage equipment, and insulation and may affect the characteristics of the device according to Factors insulation properties, dielectric strength equipment to determine the reasonableness of the security operation and technical and economic aspects. [Modification GB/T 2900.19-1994, definitions 3.23] Note. "dielectric strength" refers to a device rated insulation level or standard insulation level by 4.35 and 4.36, respectively defined. 4.2 External insulation externalinsulation Solid insulation exposed in the atmosphere in the air gap and the surface equipment, it is subjected to the applied voltage and by the external atmospheric conditions, and the other field, Effects such as contamination, humidity, and other pests. [GB/T 2900.19-1994, definitions 3.24] NOTE. insulating outer weather protective or may be a non-climate protection, are designed to run inside or outside the protective body. 4.3 Insulating internalinsulation Solid, liquid or gas unaffected by atmospheric conditions other external equipment insulation. [GB/T 2900.19-1994, definitions 3.25] 4.4 Self-restoring insulation self-restoringinsulation After disruptive discharges during the test, after a short time, it can be fully restored the insulating properties of the insulation. [Modification GB/T 2900.19-1994, definitions 3.28] Note. These are generally insulated external insulation, but is not required. 4.5 Non-self-restoring insulation nonself-restoringinsulation After disruptive discharges during the test, or not fully recover the loss of insulation properties of the insulation. [GB/T 2900.19-1994, definitions 3.29] NOTE. 4.4 and 4.5 is defined only by the action of the test applies the discharge voltage during the insulation test caused. However, discharge may be caused at runtime Since self-restoring insulation partial or complete loss of its original insulating properties. 4.6 Terminal insulating structure insulationconfigurationterminal Voltage may be applied to any of the terminals between any two terminals on the insulation. Terminals are. a) phase terminal. the terminal is applied to neutral voltage of the system between its neutral point and the run-time; b) neutral point terminal. equivalent to the system neutral point or neutral point terminal (neutral terminal of the transformer and the like); c) ground terminal. In operation, the ground terminal is always fixed (the transformer housing, the base of the disconnector, the tower frame, ground Plate or the like). 4.7 Insulating structure insulationconfiguration Complete geometry and operation of all of the contacts by an insulator composed of insulating. It includes all of the elements (electrical insulating properties of the dielectric effect Edge member and the conductive member). Insulating structure is divided into the following categories. 4.7.1 Three-phase insulating structure three-phaseinsulationconfiguration Having three phase terminals, a neutral terminal structure and a ground terminal. 4.7.2 Relatively (PE) insulation phase-to-earth (pe) insulationconfiguration Excluding the two phase terminals of a three phase insulating structure, and except in special circumstances, neutral terminal is grounded. 4.7.3 Phase (pp) insulation phase-to-phase (pp) insulationconfiguration Excluding a three-phase insulating structure of a phase terminal. In special cases, neutral and ground terminals negligible. 4.7.4. Longitudinal (TT) insulation longitudinal (tt) insulationconfiguration With two phase terminal and a ground terminal of the insulating structure. (Two) phase terminals belonging to the same phase of the three-phase system, which is temporarily Divided into two separate charging portion (e.g., opening the switch means). Belonging to the other two phases excluding the four terminals or ground. Special Case, that one of the two phase terminals is grounded. 4.8 The nominal system voltage nominalvoltageofasystem Un Or represents a recognition system for a suitable voltage value is approximated. [GB/T 2900.19-1994, defined 2.4] 4.9 Maximum system voltage highestvoltageofasystem Us Under normal operating conditions, the system at any point in any of the effective value of the maximum operating voltage of a timing phase occurring. [Modification GB/T 2900.19-1994, defined 2.5] 4.10 Highest voltage for equipment highestvoltageforequipment Um The apparatus insulating properties as well as other related standards associated equipment designed highest voltage RMS phase. In normal Under operating conditions specified by the relevant Technical Committee, the voltage can be continuously applied to the device. [Modification GB/T 2900.19-1994, defined 2.7] 4.11 Neutral insulation system isolatedneutralsystem In addition to protected, high-impedance ground measurement, the ungrounded system. [GB/T 2900.19-1994, definitions 3.13] 4.12 Fixed neutral grounding system solidlyearthedneutralsystem Directly grounded neutral system. [Modification GB/T 2900.19-1994, definitions 3.14] 4.13 (Neutral) impedance grounding system impedanceearthed (neutral) system To limit the ground fault current, the impedance grounded neutral system. [Modification GB/T 2900.19-1994, definitions 3.16] 4.14 (Neutral) resonant grounding system resonantearthed (neutral) system One or more neutral grounding through the reactor system, the reactor is approximately single-phase ground fault current compensating capacitive component. neutral Compensation point can be approximated by single-phase ground fault current component of the capacitive reactance of the grounding system. [Modification GB/T 2900.19-1994, definitions 3.15] Note. the resonance grounding system flowing through the fault point current is limited to the extent that residual air can be generally self-extinguishing arc of a ground fault. 4.15 Ground fault factor earthfaultfactor In a given system configuration of a three-phase system given point, during any failure of the system has little influence one or more phases, Jian When all phases working relatively highest frequency voltage effective value of the point is relatively fault-free RMS voltage frequency ratio. [GB/T 2900.19-1994, definitions 3.17] 4.16 Overvoltage overvoltage In a three-phase system voltage Us is the highest, the peak value exceeds the maximum system voltage peak opposite (Us × 2/3) or maximum interphase Or any relative phase to phase voltage waveforms of the peak pressure (2uS) respectively opposite phase or overvoltage. When the overvoltage value expressed in unit value, contrast, and white over the reference value of the voltage Us × 2/3, respectively and 2uS (in pu Representation). [Modification GB/T 2900.19-1994, Definitions 3.1] NOTE. Unless expressly stated otherwise, for example, surge arresters usually PU overvoltage value (equal Us × 2/3). FIG. 4.17 Voltage and over-voltage classification classificationofvoltageandovervoltage Waveform and its duration, and overvoltage can be divided into the following. Note. in Table 1 given below about 6 and overvoltage conditions more detail. 4.17.1 Length (frequency) voltage continuous (powerfrequency) voltage Rms has a stable, sustained action working on either one of the pair of terminal insulation frequency voltage. 4.17.2 Temporary overvoltage temporaryovervoltage; TOV Longer duration power frequency overvoltage. [Modification GB/T 2900.19-1994, defined 3.6] NOTE. overvoltage may be undamped or weakly damped. In some cases, the frequency may be several times lower than the frequency or several times. 4.17.3 Transient overvoltage transientovervoltage A few milliseconds or less in duration over-voltage, typically high damping oscillation or oscillations. [GB/T 2900.19-1994, defined 3.7] Note. The temporary overvoltage transient overvoltage......

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Tips & Frequently Asked Questions:

Question 1: How long will the true-PDF of GB 311.1-2012_English be delivered?

Answer: Upon your order, we will start to translate GB 311.1-2012_English as soon as possible, and keep you informed of the progress. The lead time is typically 4 ~ 6 working days. The lengthier the document the longer the lead time.

Question 2: Can I share the purchased PDF of GB 311.1-2012_English with my colleagues?

Answer: Yes. The purchased PDF of GB 311.1-2012_English will be deemed to be sold to your employer/organization who actually pays for it, including your colleagues and your employer's intranet.

Question 3: Does the price include tax/VAT?

Answer: Yes. Our tax invoice, downloaded/delivered in 9 seconds, includes all tax/VAT and complies with 100+ countries' tax regulations (tax exempted in 100+ countries) -- See Avoidance of Double Taxation Agreements (DTAs): List of DTAs signed between Singapore and 100+ countries

Question 4: Do you accept my currency other than USD?

Answer: Yes. If you need your currency to be printed on the invoice, please write an email to Sales@ChineseStandard.net. In 2 working-hours, we will create a special link for you to pay in any currencies. Otherwise, follow the normal steps: Add to Cart -- Checkout -- Select your currency to pay.

Question 5: Should I purchase the latest version GB 311.1-2012?

Answer: Yes. Unless special scenarios such as technical constraints or academic study, you should always prioritize to purchase the latest version GB 311.1-2012 even if the enforcement date is in future. Complying with the latest version means that, by default, it also complies with all the earlier versions, technically.