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Determination of inrush current characteristics of lighting products
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Basic data
| Standard ID | GB/T 44474-2024 (GB/T44474-2024) |
| Description (Translated English) | Determination of inrush current characteristics of lighting products |
| Sector / Industry | National Standard (Recommended) |
| Classification of Chinese Standard | K70 |
| Classification of International Standard | 29.140.01 |
| Word Count Estimation | 17,198 |
| Date of Issue | 2024-10-26 |
| Date of Implementation | 2025-05-01 |
| Issuing agency(ies) | State Administration for Market Regulation, China National Standardization Administration |
GB/T 44474-2024: Determination of inrush current characteristics of lighting products
---This is an excerpt. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.), auto-downloaded/delivered in 9 seconds, can be purchased online: https://www.ChineseStandard.net/PDF.aspx/GBT44474-2024
ICS 29.140.01
CCSK70
National Standard of the People's Republic of China
Determination of surge current characteristics of lighting products
(IEC 63129.2020, MOD)
Released on October 26, 2024
Implementation on May 1, 2025
State Administration for Market Regulation
The National Standardization Administration issued
Table of Contents
Preface III
1 Scope 1
2 Normative references 1
3 Terms and Definitions 1
4 Symbols and abbreviations 2
5 General Notes on Measurement 3
6 Inrush current measurement 3
7 DC Method 4
7.1 Measuring device 4
7.2 Determining the value of the adjustable resistor 5
7.3 Measurement and calculation of surge current characteristics 6
8 Alternative Communication Methods 7
8.1 General 7
8.2 Determining the value of the adjustable resistor 8
8.3 Measurement and calculation of surge current characteristics 9
9 Other Alternative Methods 9
Appendix A (Informative) Application of Surge Current Characteristics 11
A.1 Overview 11
A.2 Matching of DUT surge current characteristics with switch or MCB specifications 11
Reference 12
Preface
This document is in accordance with the provisions of GB/T 1.1-2020 "Guidelines for standardization work Part 1.Structure and drafting rules for standardization documents"
Drafting.
This document is modified to adopt IEC 63129.2020 "Determination of surge current characteristics of lighting products".
The technical differences between this document and IEC 63129.2020 and their reasons are as follows.
---Change AC 230V 50/60Hz to AC 220V 50Hz to suit my country's voltage.
Please note that some of the contents of this document may involve patents. The issuing organization of this document does not assume the responsibility for identifying patents.
This document was proposed by the China Light Industry Federation.
This document is under the jurisdiction of the National Technical Committee for Standardization of Lighting Appliances (SAC/TC224).
This document was drafted by. Hangzhou Huapu Yongming Optoelectronics Co., Ltd., Shenzhen Baoan District New Display Industry Technology Promotion Center,
Fiter Electronics (Hangzhou) Co., Ltd., National Electric Light Source Quality Supervision and Inspection Center (Beijing), Zhongshan Guangsheng Semiconductor Technology Co., Ltd.
Ltd., Zhuhai Shengchang Electronics Co., Ltd., Shenzhen Lianyu Optoelectronics Co., Ltd., National Energy Conservation Center, Beijing Electric Light Source Research Institute Co., Ltd.
company.
The main drafters of this document are. Li Zhiming, Zhao Fei, Wang Yiyou, Wang Chong, Xia Zhenghao, Zhao Xianyun, Xu Jianyong, Hong Meijuan, Ma Ludan, Zhang Kang,
Pan Nianhua, Yang Biyu, and Yang Jie.
Determination of surge current characteristics of lighting products
1 Scope
This document describes a method based on measurement and calculation to determine the surge current of single and/or multiple lighting products of the same type.
Specific characteristics of the flow. Lighting products include.
--- Light sources with integrated control devices;
---Control device;
---Lighting fixtures.
The surge current characteristics that have been determined are.
---Peak surge current;
---Surge current pulse duration.
This document applies to lighting products connected to a low voltage power grid of AC 220V 50Hz.
NOTE. In clause 6, the method applies reference values of reference (line) inductance and reference (short-circuit) peak current, which reflect the voltage at 220 VAC.
Typical situation in installation.
2 Normative references
This document has no normative references.
3 Terms and Definitions
The following terms and definitions apply to this document.
3.1
A two-terminal thyristor having substantially the same switching characteristics in the first and third quadrants of the current-voltage characteristic curve
body tube.
3.2
A three-terminal thyristor having substantially the same switching characteristics in the first and third quadrants of the current-voltage characteristic.
body tube.
3.3
circuit-breaker
It can connect, carry and disconnect current under normal circuit conditions; carry the specified overcurrent within the specified time and can
A mechanical switching device that connects and disconnects current under circuit conditions (such as various short-circuit conditions).
3.4
source)
A unit connected between a power source and at least one light source for providing a rated voltage or rated current to the light source, which may consist of one or more
Independent components.
Note 1.The control device may include triggering, dimming, power factor correction, radio interference suppression and more control functions.
...
