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NB/T 10279-2019 English PDF

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NB/T 10279-2019: (Power transmission and transformation equipment)
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PDF similar to NB/T 10279-2019


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Basic data

Standard ID NB/T 10279-2019 (NB/T10279-2019)
Description (Translated English) (Power transmission and transformation equipment)
Sector / Industry Energy Industry Standard (Recommended)
Classification of Chinese Standard K40
Classification of International Standard 29.020
Word Count Estimation 12,146
Date of Issue 2019-11-04
Date of Implementation 2020-05-01
Issuing agency(ies) National Energy Administration

NB/T 10279-2019: (Power transmission and transformation 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.
Power transmission and transformation equipments-Warm-damp environmental ICS 19.040 K 40 NB Energy Industry Standards of the People's Republic of China Humid and hot environmental conditions for power transmission and transformation equipment conditions 2019-11-04 released 2020-05-01 implementation Issued by National Energy Administration

Table of contents

Foreword...II 1 Scope...1 2 Normative references...1 3 Description of environmental parameters and their codes...1 4 Hot and humid environmental conditions...2 4.1 General requirements...2 4.2 Climatic conditions...2 4.3 Biological conditions...3 4.4 Conditions for chemically active substances...3 4.5 Mechanically active material conditions...4 4.6 Mechanical conditions...4 4.7 Electromagnetic conditions...5 Appendix A (informative appendix) Description of the application of environmental conditions...7

Foreword

This standard was drafted in accordance with the rules given in GB/T 1.1-2009 "Guidelines for Standardization Work Part 1.Standard Structure and Compilation". This standard was proposed by China Electrical Equipment Industry Association. This standard is under the jurisdiction of the National Standardization Technical Committee for Environmental Conditions and Environmental Testing of Electrical and Electronic Products (SAC/TC 8). Drafting organizations of this standard. China National Electrical Equipment Research Institute Co., Ltd., Shenzhen Graduate School of Tsinghua University, Guangzhou Power Supply Bureau Co., Ltd. Force Testing Research Institute, Shenzhen Uruit Testing Technology Co., Ltd., Shenzhen Metrology and Quality Testing Research Institute, China Shipbuilding Industry Corporation The 704th Research Institute, Fujian Xinneng Offshore Wind Power R&D Center Co., Ltd., Hainan Power Grid Co., Ltd. Electric Power Research Institute, Guangzhou Baiyun Electrical Equipment Co., Ltd., Global Energy Internet Research Institute Co., Ltd., Hainan Electric Power School, Guangdong Power Grid Co., Ltd. The company's Electric Power Research Institute, Wuxi Sunan Test Equipment Co., Ltd., Xiangjiaba Hydropower Plant. The main drafters of this standard. Wang Jun, Jie Ganxin, Wang Xilin, Wang Yong, Fan Weinan, Xu Xuedong, Mei Liguang, Zhan Yang, Qian Zhaojun, Tu Chuankui, Zhao Hailong, He Zhou, Hao Wenkui, Liu Guoqing, Huang Feng, Ni Yangyi, Yi Yawen, Chen Chuan, Zhang Wenqiang, Liu Xin, Jia Zhidong, Tan Yu, Cheng Zishuo, Liu Xiaoping, Huang Song, Wang Xun, Liang Yongchun, Zhang Qijun. Humid and hot environmental conditions for power transmission and transformation equipment

1 Scope

This standard specifies the environmental parameter level and severity of the power transmission and transformation equipment during service under humid and hot environmental conditions. This standard is applicable to the power transmission and transformation equipment used in the two climate types of “damp heat” and “sub-humid heat” specified in GB/T 4797.1-2018. Prepared. Note. Considering the actual environmental conditions used in power transmission and transformation, this standard does not include marine environmental conditions, that is, hydrological conditions are not considered. But it contains hot and humid island environment. This standard only specifies the environmental conditions that directly affect the product, but does not describe the specific impact of these environmental conditions on the product. The environmental conditions described in this standard do not include storage, transportation and installation. For such conditions, see relevant standards and technical specifications. This standard does not consider environmental conditions caused by fire, blasting and ionizing radiation and environmental conditions caused by other accidents. In special circumstances Under circumstances, the probability of occurrence of these factors should be considered.

2 Normative references

The following documents are indispensable for the application of this document. For dated reference documents, only the dated version applies to this article Pieces. For undated references, the latest version (including all amendments) applies to this document. GB/T 4796-2017 Environmental conditions classification environmental parameters and their severity GB/T 4797.1-2018 Classification of Environmental Conditions Natural Environmental Conditions Temperature and Humidity GB/T 4798.10-2006 Introduction to Environmental Conditions for Application of Electrical and Electronic Products GB/T 14091-2009 Mechanical product environmental parameter classification and its severity classification GB/Z 18039.1-2000 Electromagnetic compatibility environment Electromagnetic environment classification

3 Description of environmental parameters and codes

For detailed classification and application guidelines of environmental condition parameters, see GB/T 4796-2017 and GB/T 4798.10-2006.

4 Humid and hot environmental conditions

4.1 General requirements 4.1.1 The actual use of power transmission and transformation equipment will be affected by a variety of environmental conditions. The conditions and codes included in it are climatic conditions (K), Special climatic conditions (Z), biological conditions (B), chemically active material conditions (C), mechanically active material conditions (S), mechanical conditions (M) And electromagnetic conditions (E). For equipment in different places of use in different hot and humid areas, the above-mentioned various influential conditions and their strict Cool degree. 4.1.2 For some parameters in the standard, the severity cannot be specified quantitatively, but the severity is qualitatively specified for typical parameters, such as Condensation, icing and frost in climatic conditions, biological conditions, etc. 4.2 Climatic conditions 4.2.1 Climatic conditions grade parameters, see Table 1. Note. Zh. means heat radiation conditions; Za. means ambient air movement conditions; Zw. means other water source conditions except rain. 4.3 Biological conditions The biological conditions in this standard only give typical parameters, and do not give quantitative severity values. See Table 3 for biological condition level parameters. 4.4 Conditions for chemically active substances See Table 4 for the condition level of chemically active substances. 4.5 Mechanically active material conditions The environmental parameters of mechanically active material conditions are shown in Table 5. Table 5 Condition level parameter value of mechanical active material 4.6 Mechanical conditions Refer to Table 6 for the mechanical environmental condition parameter levels of vibration and swing, and refer to GB/T for specific spectrum types and response spectra. 4796-2017 and GB/T 14091-2009. 4.7 Electromagnetic conditions See Table 7 and Table 8 for the electromagnetic environmental conditions and power supply conditions of the power transmission and transformation equipment. Sources of radiated pulse disturbances and Refer to GB/Z 18039.1-2002 for the range of harassment. AA

Appendix A

(Informative appendix) Description of environmental condition level application A.1 Description This appendix provides necessary supplementary explanations on how to correctly select environmental parameters and their levels. The climatic condition parameters in the standard refer to the short-term extreme conditions experienced by the transmission and transformation equipment in the service process. The multi-year average of the extreme value, the chemical active substance condition adopts the maximum value, that is, the limit value or peak value that does not exceed 30 minutes per day. A.2 Climatic conditions 3K4.This level is suitable for temperature controlled places with large humidity changes, and humidity control is not adopted. The product may encounter condensation and rain The impact of other water sources. But it is not affected by natural precipitation and freezing. 3K5, 3K5L. This grade is suitable for places where there is neither temperature control nor humidity control. Products can be exposed to solar radiation and heat radiation It is affected by sunlight, air flow, condensation, and water other than rain, and may encounter freezing, but is not affected by natural precipitation. 3K5L differs from 3K5 only in "high temperature" conditions. 4K3Hs. This level is suitable for products directly exposed to "damp heat" and "sub-humid heat" climate types without weather protection. A.3 Biological conditions 3B1.This level is suitable for places where there is no biological hazard. The product is required to take protective measures, or the product is basically free of mold growth and Use in places destroyed by animals. 3B2, 4B1.These two levels are suitable for products exposed to mold growth and rodent damage, but no termites. 4B2.This level applies to places where the product is exposed to mold growth and rodents (including termites) damage. 4B3, 4B4.These two levels are applicable to places affected and damaged by marine organisms, and are determined according to the actual conditions in each sea area. A.4 Chemically active substance conditions 3C1, 4C1.These two levels are suitable for places with less chemically active substances. 3C2, 4C2.These two levels are suitable for general pollution, low chemical gas concentration in the environment, but sometimes people can smell pungent odor Place. 3Cs1, 4Cs1.These two grades are suitable for areas far away from the ocean, and are basically free from salt spray pollution and corrosion. 3Cs2, 4Cs2.These two grades are suitable for products that are usually used alternately between salty atmosphere and dry atmosphere. 3Cs3, 4Cs3.These two levels are suitable for use in the marine environment or in offshore areas, which may be frequently exposed to the marine environment, but are usually sealed Closed object protection products. 3Cs4, 4Cs4.These two levels are suitable for products exposed to this environment during most of their service life in the marine environment or offshore areas. Product. A.5 Mechanically active material conditions 3S1.This level is suitable for places where measures are taken to minimize floating dust and prevent sand from entering. 3S2.This level is suitable for places without dust-proof facilities, but the place is not close to sand and dust sources. 3S3.This level is suitable for places close to sand, dust or industrial dust sources or geographically located in places with windy sand or dust in the air. 4S1.This level is suitable for places not close to the source of sand. 4S2.This level is suitable for places with sand, dust or industrial dust sources. 4S3.This level is suitable for places with sand, dust or industrial dust sources or geographical locations with windy sand or dust in the air. A.6 Mechanical conditions M1.This level is suitable for places without significant vibration and impact, for example, away from places where there are moving or rotating machinery. M2.This level is suitable for places with low significant vibrations, such as vibrations from nearby passing vehicles. M3.This level is suitable for places with low significant impact, such as impacts from nearby passing vehicles or waves crashing. M4.This level is suitable for places with significant vibration and impact, such as vibration and impact from nearby passing vehicles or relatively large waves Slap etc. M5.This level is suitable for places with high impact, for example, the product is installed near moving or rotating machinery. M6.This level is suitable for places with high vibration, for example, the product is installed near a moving or rotating machine with high vibration. M7.This level is suitable for places with great vibration, for example, the product is directly installed on moving or rotating machinery. M8.This level is suitable for places with extreme vibration, for example, the product is directly installed on a movable or rotating machine with high vibration. A.7 Electromagnetic conditions E1.This level is suitable for electromagnetic radiation environments with good protection measures or low energy levels. E2.This level is suitable for electromagnetic environments with general protective measures or at a medium energy level. E3.This level is suitable for electromagnetic radiation environment without protective measures or at high energy levels. E4.This level is suitable for extremely harsh electromagnetic environments.

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