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NB/T 10421-2020 English PDF

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US$629.00 · In stock
Delivery: <= 5 days. True-PDF full-copy in English will be manually translated and delivered via email.
NB/T 10421-2020: Technical specification of comprehensive treatment equipment for unbalanced current in low voltage distribution grid
Status: Valid

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
NB/T 10421-2020	629	Add to Cart	5 days	Technical specification of comprehensive treatment equipment for unbalanced current in low voltage distribution grid	Valid

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Basic data

Standard ID: NB/T 10421-2020 (NB/T10421-2020)
Description (Translated English): Technical specification of comprehensive treatment equipment for unbalanced current in low voltage distribution grid
Sector / Industry: Energy Industry Standard (Recommended)
Classification of Chinese Standard: K30
Classification of International Standard: 29.130.01
Word Count Estimation: 27,274
Date of Issue: 2020-10-23
Date of Implementation: 2021-02-01
Quoted Standard: GB/T 191-2008; GB/T 2423.1-2008; GB/T 2423.2-2008; GB/T 2423.4-208; GB 2894-2008; GB/T 3859.1-2013; GB/T 4208-2017; GB/T 4798.2-2008; GB 4824-2019; GB/T 15576-2008; GB/T 17626.2-2018; GB/T 17626.4-2018; GB/T 17626.5-2019; GB/T 17626.12-2013
Regulation (derived from): National Energy Administration Announcement No. 5 (2020)
Issuing agency(ies): National Energy Administration
Summary: This standard specifies the environmental conditions, functions, performance, inspection methods, inspection rules, markings, packaging, transportation, storage and other technical requirements of the comprehensive treatment device for low-voltage distribution network unbalanced currents. This standard applies to the parallel active power electronic unbalanced current comprehensive treatment device with a nominal voltage of 0.38 kV and a frequency of 50 Hz low-voltage AC distribution network. Other low-voltage voltage levels can be implemented by reference.

NB/T 10421-2020: Technical specification of comprehensive treatment equipment for unbalanced current in low voltage distribution grid

---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.
Technical specification of comprehensive treatment equipment for unbalanced current in low voltage distribution grid ICS 29.130.01 K30 Energy Industry Standards of the People's Republic of China Comprehensive Treatment of Unbalanced Current in Low Voltage Distribution Network Device technical specifications 2020-10-23 released 2021-02-01 implementation Issued by the National Energy Administration

Foreword Ⅲ 1 Scope 1 2 Normative references 1 3 Terms and definitions 1 4 Product model, meaning and basic parameters 3 4.1 Model and meaning 3 4.2 Main product models and their basic parameters 4 5 Technical requirements 4 5.1 Functional requirements 4 5.2 Conditions of Use 4 5.3 Appearance, parts and components 4 5.4 Insulation performance 5 5.5 Electrical performance indicators 5 5.6 Protection function 6 5.7 Control logic 6 5.8 Grid voltage adaptability 7 5.9 Temperature rise limit 7 5.10 Electromagnetic compatibility 7 5.11 Protection performance 8 5.12 Communication function 8 6 Inspection method 8 6.1 Inspection conditions 8 6.2 Inspection of appearance, parts and components 9 6.3 Insulation withstand voltage test 9 6.4 Basic function inspection 9 6.5 Compensation performance inspection 10 6.6 Protection function inspection 11 6.7 Grid voltage adaptability test 11 6.8 Control logic check 11 6.9 Temperature rise inspection 11 6.10 Loss inspection 11 6.11 Electromagnetic compatibility inspection 12 6.12 Noise inspection 12 6.13 Protection performance inspection 12 6.14 Environmental test 12 7 Inspection rules 13 7.1 Inspection classification 13 7.2 Type test 13 7.3 Factory inspection 13 7.4 On-site inspection 14 8 Marking, packaging, transportation and storage 14 8.1 Sign 14 8.2 Packaging 14 8.3 Transportation 14 8.4 Storage 14 Appendix A (Normative Appendix) Device MODBUS communication protocol 15 A.1 Scope of application 15 A.2 Reference Standard 15 A.3 The underlying protocol 15 A.4 Physical interface 15 A.5 Data transmission rate 15 A.6 Character format 15 A.7 Data Type 15 A.8 Application layer data packet/frame format definition 16 A.9 Detailed Explanation of Command/Response Information 17 A.10 CRC calculation function 21 Appendix B (informative appendix) Unbalance calculation method 22 B.1 The case where both amplitude and phase are known 22 B.2 The case where the amplitude is known but the phase is uncertain 22 Appendix C (informative appendix) Device control logic diagram 23

Foreword

This standard was drafted in accordance with the rules given in GB/T 1.1-2009. This standard was proposed and managed by the National Standardization Committee for Voltage, Current Rating and Frequency (SAC/TC1). Drafting organizations of this standard. Electric Power Research Institute of Yunnan Power Grid Co., Ltd., Electric Power Research Institute of State Grid Jiangsu Electric Power Co., Ltd. Institute, China National Machinery Productivity Promotion Center, Anhui University, Shenzhen Shenghong Electric Co., Ltd., Yunnan Power Grid Co., Ltd., Shenzhen China Electric Power Technology Co., Ltd., Guangdong Power Grid Co., Ltd. Guangzhou Power Supply Bureau, Yunnan Power Grid Co., Ltd. Kunming Power Supply Bureau, Anhui Yitian Power Quality Technology Co., Ltd., Guangxi Power Grid Co., Ltd. Electric Power Research Institute, State Grid Shanxi Electric Power Co., Ltd. Power Research Institute, State Grid Henan Electric Power Co., Ltd. Electric Power Research Institute, State Grid Anhui Electric Power Co., Ltd. Electric Power Research Institute, Zhejiang Wegotai Electric Technology Co., Ltd., Zhongbao Electric Co., Ltd., State Grid Fujian Electric Power Co., Ltd. Electric Power Research Institute, State Grid Liaoning Ningxia Electric Power Co., Ltd. Electric Power Research Institute, Hangzhou Decheng Electric Power Technology Co., Ltd. The main drafters of this standard. Tan Risheng, Chen Bing, Zhang Ping, Jiang He, He Xin, Zhu Mingxing, Zhao Longteng, Kuanghua, Wang Xin, Zhou Kai, He Mi, Zhang Sihai, Jin Qingren, Wang Jinhao, Liu Shuming, Xu Bin, Sun New Year, Tang Hong, Zhang Yi, Li Shenghui, Li Bangjia. Comprehensive Treatment of Unbalanced Current in Low Voltage Distribution Network Device technical specifications

1 Scope

This standard specifies the environmental conditions, functions, performance, and inspection of the comprehensive treatment device for unbalanced current in the low-voltage distribution network (hereinafter referred to as the "device") Technical requirements for inspection methods, inspection rules, signs, packaging, transportation, and storage. This standard is applicable to parallel active power electronic unbalanced current synthesis systems with a nominal voltage of 0.38kV and a frequency of 50Hz in low-voltage AC distribution networks. Combined management device, other low-voltage voltage levels can be implemented by reference.

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 reference documents, the latest version (including all amendments) is applicable to this document. GB/T 191-2008 Graphical signs for packaging, storage and transportation (ISO 780.1997, MOD) GB/T 2423.1-2008 Environmental testing of electric and electronic products Part 2.Test method Test A. Low temperature (IEC 60068-2- 1.2007, IDT) GB/T 2423.2-2008 Environmental testing of electric and electronic products Part 2.Test method Test B. High temperature (IEC 60068-2- 2.2007, IDT) GB/T 2423.4-2008 Environmental testing of electric and electronic products Part 2.Test method Test Db. Alternating damp heat (12h 12h cycle) (IEC 60068-2-30.2005, IDT) GB 2894-2008 Safety signs and guidelines for their use GB/T 3859.1-2013 General requirements for semiconductor converters and power grid commutated converters Part 1-1.Basic requirements and specifications (IEC 60146-1-1.2009, MOD) GB/T 4208-2017 Enclosure protection class (IP code) (IEC 60529.2013, IDT) GB/T 4798.1-2019 Environmental condition classification, environmental parameter group classification and its severity classification Part 1.Storage (IEC 60721-3-1.2018, IDT) GB/T 4798.2-2008 Environmental conditions for the application of electrical and electronic products Part 2.Transportation (IEC 60721-3-2.1997, MOD) GB 4824-2019 Industrial, scientific and medical equipment radio frequency disturbance characteristic limits and measurement methods (CISPR11.2016, IDT) GB/T 15576-2008 Low-voltage complete set of reactive power compensation device GB/T 17626.2-2018 Electromagnetic compatibility test and measurement technology Electrostatic discharge immunity test (IEC 61000-4-2.2008, IDT) GB/T 17626.4-2018 Electromagnetic compatibility test and measurement technology Electrical fast transient pulse group immunity test (IEC 61000- 4-4.2012, IDT) GB/T 17626.5-2019 Electromagnetic compatibility test and measurement technology surge (impact) immunity test (IEC 61000-4-5. 2014, IDT) GB/T 17626.12-2013 Electromagnetic compatibility test and measurement technology Ring wave immunity test (IEC 61000-4-12.2006, IDT)

3 Terms and definitions

3.1 Active unbalanced current comprehensive treatment device activeunbalancedcurrentcomprehensivedevice Use power electronic converter technology to actively compensate the fundamental unbalanced current of the load (negative sequence current or zero sequence current), and also have harmonic filtering Parallel active device with wave and fundamental reactive power compensation function. ......

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Tips & Frequently Asked Questions:

Question 1: How long will the true-PDF of NB/T 10421-2020_English be delivered?

Answer: Upon your order, we will start to translate NB/T 10421-2020_English as soon as possible, and keep you informed of the progress. The lead time is typically 3 ~ 5 working days. The lengthier the document the longer the lead time.

Question 2: Can I share the purchased PDF of NB/T 10421-2020_English with my colleagues?

Answer: Yes. The purchased PDF of NB/T 10421-2020_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.