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GBZ40776-2021 English PDF

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US$314.00 · In stock
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GBZ40776-2021: Low-voltage switchgear and controlgear - Fire risk analysis and risk reduction measures
Status: Valid

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/Z 40776-2021	314	Add to Cart	3 days	Low-voltage switchgear and controlgear - Fire risk analysis and risk reduction measures	Valid

Similar standards

GB/T 36277 GB/T 34130.1 GB/T 34130.21 GB/T 11918.6 GB/T 14048.11

Basic data

Standard ID: GB/Z 40776-2021 (GB/Z40776-2021)
Description (Translated English): Low-voltage switchgear and controlgear - Fire risk analysis and risk reduction measures
Sector / Industry: National Standard
Classification of Chinese Standard: K30
Word Count Estimation: 18,149
Issuing agency(ies): State Administration for Market Regulation, China National Standardization Administration

GBZ40776-2021: Low-voltage switchgear and controlgear - Fire risk analysis and risk reduction measures

---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.
GB /Z 40776-2021 Low-voltage switchgear and controlgear - Fire risk analysis and risk reduction measures ICS 29.130.20 CCSK30 National Standardization Guiding Technical Documents of the People's Republic of China Low-voltage switchgear and control equipment Fire risk analysis and risk reduction measures (IEC TR63054.2017, IDT) Released on 2021-10-11 2022-05-01 implementation State Administration for Market Regulation Issued by the National Standardization Management Committee

Foreword Ⅲ Introduction Ⅳ 1 Scope 1 2 Normative references 1 3 Terms and definitions 2 4 Fire mode of electrical fire 3 4.1 Overview 3 4.2 Overheating of connection points due to loose connections 4 4.3 Overheating of internal live conductor 7 4.4 Arc 8 4.5 Failure of electronic components 9 5 Conclusion 10 Reference 11

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" Drafting. The translation method used in this document is equivalent to the adoption of IEC TR63054.2017 (version 1.0) "Low-voltage switchgear and control equipment fire risk analysis" Analysis and Risk Reduction Measures." The Chinese documents that have consistent correspondence with the normatively cited international documents in this document are as follows. ---GB/T 5169.2-2013 Fire hazard test of electric and electronic products Part 2.General rules for fire hazard assessment guidelines (IEC 60695-1-10.2009, IDT); ---GB/T 14048.1-2012 Low-voltage switchgear and control equipment Part 1.General (IEC 60947-1.2011, MOD); ---GB/T 14048.2-2020 Low-voltage switchgear and control equipment Part 2.Circuit breakers (IEC 60947-2..2019, MOD); ---GB/T 14048.3-2017 Low-voltage switchgear and control equipment Part 3.Switches, isolators, isolating switches and fuses Combination appliance (IEC 60947-3.2015, IDT); ---GB/T 14048.5-2017 Low-voltage switchgear and control equipment Part 5-1.Control circuit appliances and switch components Electromechanical control circuit appliances (IEC 60947-5-1.2016, MOD); ---GB/T 14048.7-2016 Low-voltage switchgear and control equipment Part 7-1.Auxiliary device copper conductor terminals Sub-row (IEC 60947-7-1.2009, MOD); ---GB/T 14048.9-2008 Low-voltage switchgear and control equipment Part 6-2.Multifunctional electrical (equipment) control and protection Protective switching appliances (equipment) (CPS) (IEC 60947-6-2.2007, IDT); ---GB/T 14048.11-2016 Low-voltage switchgear and control equipment Part 6-1.Multifunctional electrical switchgear (IEC 60947-6-1.2013,MOD); ---GB/T 17464-2012 The safety requirements for the threaded and non-threaded clamping parts of the electrical copper wire of the connecting device are applicable General requirements and special requirements for clamping parts of wires from 0.2mm2 to 35mm2 (including) (IEC 60999-1.1999, IDT); ---GB/T 20636-2006 The safety requirements for threaded and non-threaded clamping parts of electrical copper conductors for connecting devices are applicable Special requirements for wires above 35mm2 to 300mm2 (IEC 60999-2.2003, IDT). The following editorial changes have been made to this document. ---Chapter 2, IEC 60947-4 (all parts) and IEC 60947-6-2 are added to the normative references in Chapter 2. Please note that some of the contents of this document may involve patents. The issuing agency of this document is not responsible for identifying patents. This document was proposed by the China Electrical Equipment Industry Association. This document is under the jurisdiction of the National Low-Voltage Apparatus Standardization Technical Committee (SAC/TC189). Drafting organizations of this document. Shanghai Electric Research Institute, Zhejiang Chint Electric Co., Ltd., Shanghai Liangxin Electric Co., Ltd., Suzhou Siemens Electric Co., Ltd., Qingdao Dingxin Communication Co., Ltd., Shanghai Institute of Work Safety, Shanghai Tianwei Certification Technology Technology Co., Ltd., Hongxiu Electric Co., Ltd. The main drafters of this document. Li Hui, Chen Xueqin, Zhu Yingping, Zhao Peng, Zhu Lin, Wang Jianhua, Wang Xiang, Xu Xianqing, Yu Nan, Qian Jiangbo.

Introduction

The hazard caused by fire is essentially an electrical hazard. The installation procedures and product standards of electrical equipment are also designed to not affect product safety. On the basis of full and function, provide measures to reduce risks and reduce residual risks as much as possible. When selected, installed and used in accordance with the manufacturer’s instructions and installation procedures, the IEC 60947 series standard low-voltage switchgear and The residual risk of control equipment is relatively low, and it will not cause fire during normal operation or foreseeable failure conditions. This document is consistent with ISO /IEC Guide 51 and IEC Guide 116. Risk analysis and risk reduction measures, although they are applicable to the requirements of low-voltage switchgear and control equipment, other product committees can also make For reference. This document studies the fire hazards (i.e. fire mechanism) related to low-voltage switchgear and control equipment. The IEC 60947 series standard Measures to reduce risks in the standards will be specified in this document. These measures are based on a systematic approach and are not limited to material requirements, but also include design rules and type tests to ensure that the equipment is in normal operation or It will not cause fire under reasonably foreseeable failure conditions. Low-voltage switchgear and control equipment Fire risk analysis and risk reduction measures

1 Scope

This document presents the fire mode analysis of four electrical fires of low-voltage switchgear and control equipment (referred to as "equipment") and the corresponding wind Risk reduction measures. This document is applicable to the fire risk analysis of low-voltage switchgear and control equipment (referred to as "equipment") in the IEC 60947 series of standards. The following applies. ---Only consider the situation of the fire source inside the equipment (especially in the case of failure and misuse); ---Only consider the installation of the equipment in a normal environment, without considering the hazardous environment, such as the presence of combustible materials; --- Only consider the selection, installation and use of the product in accordance with the manufacturer's instructions and installation procedures. In addition, this document does not consider the following situations. ---Failure conditions mentioned in IEC TR61641; ---The risk of smoke emission; ---Double failure, such as a combination of potential multiple phenomena.

2 Normative references

The content of the following documents constitutes an indispensable clause of this document through normative references in the text. Among them, dated quotations Only the version corresponding to that date is applicable to this document; for undated reference documents, the latest version (including all amendments) is applicable to This document. IEC Guide 116 Low Voltage Equipment Safety Related Risk Assessment and Risk Reduction Guidelines (Guidelines forsafetyrelatedriskas- sessmentandriskreductionforlowvoltageequipment) IEC 60695-1-10.2016 Fire hazard test Part 1-10.General guidelines for fire hazard assessment of electrical and electronic products (Firehazardtesting-Part 1-10.Guidanceforassessingthefirehazardofelectrotechnicalproducts- Generalguidelines) IEC 60947-1.2007 Low-voltage switchgear and control equipment Part 1.General (Low-voltageswitchgearandcon- trolgear-Part 1.Generalrules) IEC 60947-1.2007/AMD1.2010 IEC 60947-1.2007/AMD2.2014 IEC 60947-2 Low-voltage switchgear and control equipment Part 2.Circuit breaker (Low-voltage switchgearandcon- trolgear-Part 2.Circuit-breakers) IEC 60947-3 Low-Voltage Switchgear and Control Equipment Part 3.Switches, Isolators, Isolating Switches and Fuse Combinations (Low-voltageswitchgearandcontrolgear-Part 3.Switches, disconnectors, switch-disconnectorsand fuse-combinationunits) IEC 60947-4 (all parts) Low-voltage switchgear and control equipment Part 4.Contactors and motor starters (Low- voltageswitchgearandcontrolgear-Part 4.Contactorsandmotor-starters) IEC 60947-5-1 Low-voltage switchgear and control equipment Part 5-1.Electromechanical control of control circuit appliances and switching elements Circuit appliances (Low-voltage switchgear and controlgear-Part 5-1.Controlcircuitdevicesandswitchingel- ......

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Tips & Frequently Asked Questions:

Question 1: How long will the true-PDF of GBZ40776-2021_English be delivered?

Answer: Upon your order, we will start to translate GBZ40776-2021_English as soon as possible, and keep you informed of the progress. The lead time is typically 1 ~ 3 working days. The lengthier the document the longer the lead time.

Question 2: Can I share the purchased PDF of GBZ40776-2021_English with my colleagues?

Answer: Yes. The purchased PDF of GBZ40776-2021_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.