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GB/T 39462-2020: (Safety guidelines for low-voltage DC systems and equipment)
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| GB/T 39462-2020 | English | 169 |
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(Safety guidelines for low-voltage DC systems and equipment)
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GB/T 39462-2020
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Basic data | Standard ID | GB/T 39462-2020 (GB/T39462-2020) | | Description (Translated English) | (Safety guidelines for low-voltage DC systems and equipment) | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | K09 | | Word Count Estimation | 9,940 | | Date of Issue | 2020-11-19 | | Date of Implementation | 2021-06-01 | | Regulation (derived from) | National Standard Announcement No. 26 of 2020 | | Issuing agency(ies) | State Administration for Market Regulation, China National Standardization Administration | GB/T 39462-2020: (Safety guidelines for low-voltage DC systems and equipment)---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.
(Safety guidelines for low-voltage DC systems and equipment)
ICS 29.020
CCSK09
National Standards of People's Republic of China
Safety guidelines for low-voltage DC systems and equipment
2020-11-19 released
2021-06-01 implementation
State Administration for Market Regulation
Issued by the National Standardization Management Committee
Table of contents
Foreword Ⅰ
1 Scope 1
2 Normative references 1
3 Terms and definitions 1
4 General 1
4.1 General Rule 1
4.2 Determination of safety factors 1
5 Low-voltage DC system and equipment safety factors 2
5.1 Application of multiple voltage levels 2
5.2 Influence of power input 2
5.3 The impact of DC on personal injury 2
5.4 The influence of the direction of the DC current and the polarity of the power supply 2
5.5 The influence of DC arc 2
5.6 The influence of DC ripple 2
5.7 Influence of thermal effects 2
5.8 Particularities of overvoltage protection 3
5.9 Particularities of overcurrent protection 3
5.10 Islanding effect protection 3
5.11 Isolation between AC and DC 3
5.12 The impact of AC system and equipment failure on DC system and equipment 3
5.13 Interaction between AC and DC hybrid systems and faults in equipment 3
5.14 Effect of grounding 3
5.15 The arc effect of plugs and sockets 4
5.16 Cable and wire selection 4
5.17 Selection of components 4
5.18 Impact of modular power combination mode 5
5.19 Electromagnetic compatibility (EMC) particularity 5
5.20 Impact of installation 5
5.21 Impact of reliability requirements 5
5.22 Functional safety 5
5.23 Communication Security 5
5.24 Life Cycle Management 5
Reference 6
Foreword
This document was drafted in accordance with the provisions of GB/T 1.1-2020 "Guidelines for Standardization Part 1.Structure and Drafting Rules of Standardization Documents".
Please note that certain contents of this document may involve patents. The issuing agency of this document is not responsible for identifying patents.
This document was proposed and managed by the National Electrical Safety Standardization Technical Committee (SAC/TC25).
Drafting organizations of this document. Beijing Institute of Electrical Technology and Economics of Machinery Industry, Shanghai Electrical Apparatus Research Institute (Group) Co., Ltd., Jiangsu
Hewangyuan Electric Co., Ltd., China Railway Ninth Bureau Group Electrical Engineering Co., Ltd., Siemens (China) Co., Ltd., Xu Ji Group Co., Ltd., Shenzhen
Shenzhen Feibo Laser Technology Co., Ltd., Suzhou Electric Apparatus Research Institute Co., Ltd., Guangan Electric Testing Center (Guangdong) Co., Ltd.,
State Grid Jiangsu Electric Power Co., Ltd. Electric Power Research Institute, Beijing ABB Low Voltage Electric Co., Ltd., Schneider Electric (China) Co., Ltd.
Shanghai Branch, Hangzhou Zhijiang Switch Co., Ltd., Guangdong Product Quality Supervision and Inspection Institute, Foshan Yifeng Electric Industrial Co., Ltd.
Company, Guangdong Weizhaoye Optoelectronic Energy Saving Co., Ltd., Jiangmen Leqi Electric Co., Ltd., Xingjian Artificial Intelligence Technology (Shanghai) Co., Ltd.,
Shanghai Research Institute of Work Safety, Rudong Comprehensive Inspection and Testing Center.
The main drafters of this document. Li Feng, Ji Huiyu, Zhu Tianyi, Qiu Xiaojie, Ma Hong, Hu Hongyu, Zhou Junhua, Zeng Shujun, Fang Xiaoyan, Hu Jin,
Ma Guifen, Zeng Yanhong, Li Qiang, Lin Yongqing, Wang Nong, Han Zhigang, Dai Shuidong, Wu Wei, Zhong Xiaoxiao, Dong Hongliang, Tan Zhuohe, Huang Jiayi, Huang Lixin,
Zhang Hongquan and Liu Yang.
Safety guidelines for low-voltage DC systems and equipment
1 Scope
This document establishes the overall safety principles and safety factors to be considered for low-voltage DC systems and equipment.
This document applies to DC systems and equipment with a DC voltage of 1500V and below, and provides guidance for considering safety factors.
2 Normative references
The contents of the following documents constitute indispensable clauses of this document through normative references in the text. Among them, dated reference documents,
Only the version corresponding to that date is applicable to this document; for undated references, the latest version (including all amendments) is applicable to this document.
GB/T 4776-2017 Electrical Safety Terminology
GB 19517 National Electrical Equipment Safety Technical Code
GB/T 34924-2017 Low-voltage electrical equipment safety risk assessment and risk reduction guide
3 Terms and definitions
The following terms and definitions defined in GB/T 4776-2017 apply to this document.
3.1
Low voltage DC system and equipment
Power supply or electrical systems and equipment used for power generation, transformation, transmission, distribution, energy storage or use of electricity with a rated output voltage not exceeding 1500V DC.
4 General
4.1 General
The basic safety requirements specified in GB 19517 apply to this document.
There are differences between DC and AC. In addition to meeting the basic safety requirements specified in GB 19517, low-voltage DC systems and equipment should also consider the
The safety factors specified in Chapter 5 of the document to ensure the safety under the expected use and reasonable expected misuse, and take corresponding protective measures.
Low-voltage DC system and equipment's own factors become safety factors, which shall be determined in accordance with GB/T 34924-2017.
4.2 Determination of safety factors
The safety factors (also referred to as risk factors) of low-voltage DC systems and equipment are in addition to the requirements specified in Appendix A of GB/T 34924-2017
In addition to consideration, the factors proposed in Chapter 5 of this document should also be considered. On the basis of considering safety factors, according to GB/T 34924-2017
Conduct electrical safety risk assessments for low-voltage DC systems and equipment in the methods specified in, and give necessary warnings for residual risks and inform the measures to be taken.
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