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GBZ44472-2024 English PDF

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US$369.00 · In stock
Delivery: <= 4 days. True-PDF full-copy in English will be manually translated and delivered via email.
GBZ44472-2024: Explanation of the mathematical addition of working voltages, insulation between circuits and use of PELV in lighting standards
Status: Valid

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/Z 44472-2024	369	Add to Cart	4 days	Explanation of the mathematical addition of working voltages, insulation between circuits and use of PELV in lighting standards	Valid

Similar standards

GB/T 51033 GB/T 50082

Basic data

Standard ID: GB/Z 44472-2024 (GB/Z44472-2024)
Description (Translated English): Explanation of the mathematical addition of working voltages, insulation between circuits and use of PELV in lighting standards
Sector / Industry: National Standard
Classification of Chinese Standard: K70
Classification of International Standard: 29.140.01
Word Count Estimation: 18,136
Date of Issue: 2024-10-26
Date of Implementation: 2024-10-26
Issuing agency(ies): State Administration for Market Regulation, China National Standardization Administration

GB/Z 44472-2024: Explanation of the mathematical addition of working voltages, insulation between circuits and use of PELV in lighting standards

---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/GBZ44472-2024
GB /Z 44472-2024.Instructions for mathematical addition of working voltage, insulation between circuits, and the use of PELV in lighting standards ICS 29.140.01 CCSK70 Guiding Technical Documents of National Standardization of the People's Republic of China Mathematical addition of working voltage in lighting standards, Instructions for insulation between circuits and the use of PELV standards,MOD) Released on October 26, 2024 Implementation on October 26, 2024 State Administration for Market Regulation The National Standardization Administration issued

Preface III 1 Scope 1 2 Normative references 1 3 Terms and Definitions 1 4 Mathematical addition of operating voltage 1 5 Insulation between circuits 3 6 Circuit Analysis 6 7 Use of PELV 9 8 Insulation between LV power and control line conductors 11 Reference 13 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 TR63139.2018 "On the mathematical addition of working voltages, insulation between circuits and PELV in TC34 standards Instructions for use". The document type has been adjusted from IEC technical report to my country's national standardization guidance technical document. The following editorial changes have been made to this document. --- In order to coordinate with my country's standard system, the name of the standard was changed to "Mathematical addition of working voltage, insulation between circuits and lighting standards Instructions for use of PELV; ---Change "TC34" to "Lighting" (see Chapter 1 and Chapter 4); --- Added LV, ELV letter explanation (see Chapter 1); --- Add voltage symbol description in Table 1 (see Table 1); --- Replaced IEC 60598-1.2014 with the informative reference GB/T 7000.1-2023; --- Replaced IEC 61347-1.2015 with the informative reference GB/T 19510.1-2023 (see Chapter 1, Chapter 4, Chapter 5); --- Replaced IEC 60634-4-41 with the informative reference GB/T 16895.21 (see 7.1, 7.2, 7.3); --- Replaced IEC 60449 with the informative reference GB/T 18379 (see 7.2); --- Replaced IEC 61558-1 with the informative reference GB/T 19212.1 (see 7.1). 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. National Electric Light Source Quality Supervision and Inspection Center (Beijing), Anhui Shilin Lighting Co., Ltd., Shenzhen Chaopin San Technology Co., Ltd., Xiamen Hengwang Lineng Electric Co., Ltd., Shenzhen Bao'an District New Display Industry Technology Promotion Center, Zhongshan City Zhuoman Microelectronics Co., Ltd., National Energy Conservation Center, and Beijing Electric Light Source Research Institute Co., Ltd. The main drafters of this document are. Li Yanjie, Sang Yongshu, Du Jianjun, Zhang Wenhong, Zeng Xiaolan, Xiao Hu, Wang Honghai, Wang Chong, Yang Biyu, and Yang Jie. Mathematical addition of working voltage in lighting standards, Instructions for use of insulation between circuits and PELV 1 Scope This document explains the insulation coordination requirements introduced in lighting standards to cover new technologies related to LED light sources and controllable products. Instructions, including mathematical addition of working voltages, insulation between circuits, use of protective extra low voltage (PELV), and low voltage (LV) power supplies and controls Description of the insulation between line conductors. This document describes how the supply voltage and the operating voltage are superimposed when the first fault occurs in order to assess the electrical insulation requirements of the system. (e.g. creepage distances and clearances). In addition, this document also explains in detail the Appendix X of GB/T 7000.1-2023 and Chapter 15 of GB/T 19510.1-2023. The actual failure conditions are given, and the rationale for the protection requirements for each condition is given [e.g. possible LV primary circuit to extra-low voltage (ELV) Failure of the secondary circuit will not lead to insulation overload of the secondary circuit]. This document also describes the possibilities of improving the interference immunity and reliability of electronic circuits when using PELV together with LEDs and the system Related safety consequences. Insulation between LV power and control line conductors is equally important and this document explains why it is fundamental to a complete installation. Safety considerations. 2 Normative references This document has no normative references. 3 Terms and Definitions There are no terms or definitions that require definition in this document. 4 Mathematical addition of operating voltages The insulation requirements between live parts and accessible conductive parts are determined by the control equipment input/output insulation classification, the insulation of lamps, etc. For grades, see Table X.1 of GB/T 7000.1-2023 and Table 6 of GB/T 19510.1-2023. Insulation requirements in lighting standards are based on risk assessments assuming specific fault conditions occur. Insulation requirements are generally based on the operating voltage Uout, but in certain specific fault conditions, when the power supply and output terminals of the control device are When the basic insulation between the primary circuit (Usupply) and the secondary circuit (Uout) fails, the power supply voltage is increased to Uout. Control devices with heavy insulation and reinforced insulation are not subject to this type of failure. If basic insulation fails within the control gear, the following assumptions are made. ---Output voltage increased; ---The lamp continues to operate and the increased voltage exists long enough to create a conductive path across the insulation (called leakage current). electrical tracking). For the 50Hz/60Hz transformer in the control unit, this fault condition will cause a voltage increase, which can be In electronic control devices, the complexity of the oscillation circuit may affect the result, which may be the case. ......

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Question 1: How long will the true-PDF of GBZ44472-2024_English be delivered?

Answer: Upon your order, we will start to translate GBZ44472-2024_English as soon as possible, and keep you informed of the progress. The lead time is typically 2 ~ 4 working days. The lengthier the document the longer the lead time.

Question 2: Can I share the purchased PDF of GBZ44472-2024_English with my colleagues?

Answer: Yes. The purchased PDF of GBZ44472-2024_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.