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GB/T 19258.1-2022 English PDF (GB 19258-2012, GB 19258-2003)

GB/T 19258.1-2022_English: PDF (GB/T19258.1-2022)
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GB/T 19258.1-2022English440 Add to Cart 0--9 seconds. Auto-delivery Ultraviolet radiation sources for germicidal purpose - Part 1: Low pressure mercury vapor discharge lamp Valid GB/T 19258.1-2022
GB 19258-2012English135 Add to Cart 0--9 seconds. Auto-delivery [GB/T 19258-2012] Ultraviolet germicidal lamp Obsolete GB 19258-2012
GB 19258-2003English679 Add to Cart 5 days [Need to translate] Ultraviolet germicidal lamp Obsolete GB 19258-2003


BASIC DATA
Standard ID GB/T 19258.1-2022 (GB/T19258.1-2022)
Description (Translated English) Ultraviolet radiation sources for germicidal purpose - Part 1: Low pressure mercury vapor discharge lamp
Sector / Industry National Standard (Recommended)
Classification of Chinese Standard K71
Classification of International Standard 29.140.30
Word Count Estimation 30,356
Date of Issue 2022-10-12
Date of Implementation 2023-05-01
Older Standard (superseded by this standard) GB/T 19258-2012
Drafting Organization Chenhui Lite Technology Co., Ltd., Foshan Snow Wright Lighting Co., Ltd., Foshan Kewei Optoelectronics Co., Ltd., Xiamen Lidaxin Lighting Co., Ltd., Ningbo Daxie Development Zone Uway Optoelectronics Co., Ltd., Beijing Electric Light Source Research Institute Co., Ltd. , Hangzhou Yuanfang Optoelectronics Information Co., Ltd., Shanghai Times Lighting Lighting Appliance Testing Co., Ltd., Signify (China) Investment Co., Ltd., Weikai Testing Technology Co., Ltd., Shandong Dongshun Electric Co., Ltd., National Quality Supervision and Inspection Center for Electric Light Sources (Beijing)
Administrative Organization National Standardization Technical Committee of Lighting Appliances (SAC/TC 224)
Proposing organization China National Light Industry Council
Issuing agency(ies) State Administration for Market Regulation, National Standardization Management Committee

BASIC DATA
Standard ID GB 19258-2012 (GB19258-2012)
Description (Translated English) [GB/T 19258-2012] Ultraviolet germicidal lamp
Sector / Industry National Standard
Classification of Chinese Standard K71
Classification of International Standard 29.140.30
Word Count Estimation 21,245
Older Standard (superseded by this standard) GB 19258-2003
Quoted Standard GB/T 1406.1; GB/T 1406.2; GB/T 1406.5; GB/T 2828.1; GB/T 2829; GB/T 10682; GB 16843; GB 16844; GB/T 17262; GB/T 17263; GB 18774; HJ/T 47-1999
Drafting Organization Zhejiang CH LIGHTING CO., LTD
Administrative Organization National Standardization Technical Committee Lighting
Regulation (derived from) National Standards Bulletin No. 28 of 2012
Proposing organization China Light Industry Association
Issuing agency(ies) General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, Standardization Administration of the People's Republic of China
Summary This Chinese standard specifies the low- pressure mercury vapor discharge UV lamp (hereinafter referred to as"light") product classification, technical requirements, test methods, inspection rules and signs, packaging, transport and storage. This standard

BASIC DATA
Standard ID GB 19258-2003 (GB19258-2003)
Description (Translated English) Ultraviolet germicidal lamp
Sector / Industry National Standard
Classification of Chinese Standard K71
Classification of International Standard 29.140.30
Word Count Estimation 17,116
Date of Issue 2003-07-25
Date of Implementation 2003-11-01
Quoted Standard GB 1406-2001; GB 1407-1996; GB 2799-2001; GB/T 2828-1987; GB/T 2829-2002
Drafting Organization National Electric Light Source Quality Supervision and Inspection Center (Beijing)
Administrative Organization National Standardization Technical Committee Lighting
Regulation (derived from) National Standards Bulletin No. 28 of 2012
Proposing organization China Light Industry Federation
Issuing agency(ies) General Administration of Quality Supervision, Inspection and Quarantine of the People Republic of China
Summary This Chinese standard specifies the low- pressure mercury vapor discharge ultraviolet light disinfection requirements. This standard applies to use of quartz glass or other transparent purple glass growth with ozone or ozone, UV radiation peak wavelength of 253. 7mm double-ended, single-ended or self-ballasted UV germicidal lamp first.


GB/T 19258.1-2022 GB NATIONAL STANDARD OF THE PEOPLE’S REPUBLIC OF CHINA ICS 29.140.30 CCS K 71 GB/T 19258.1-2022 Replacing GB/T 19258-2012 Ultraviolet radiation sources for germicidal purpose - Part 1: Low pressure mercury vapor discharge lamp ISSUED ON: OCTOBER 12, 2022 IMPLEMENTED ON: MAY 01, 2023 Issued by: State Administration for Market Regulation; Standardization Administration of the People’s Republic of China. Table of Contents Foreword ... 3 Introduction ... 5 1 Scope ... 6 2 Normative references ... 6 3 Terms and definitions ... 7 4 Product classification, marking and model naming ... 10 5 Technical requirements ... 10 6 Test methods ... 14 7 Inspection rules ... 15 8 Marking, packaging, storage and transportation ... 16 Annex A (normative) Test methods for ultraviolet radiation flux and electrical parameters ... 19 Annex B (normative) Measurement method of ultraviolet radiation luminance ... 23 Annex C (normative) Test method for ozone output (static method) ... 29 Annex D (informative) Test method for ozone output (dynamic method) ... 33 Annex E (normative) Life test method ... 36 Bibliography ... 38 Ultraviolet radiation sources for germicidal purpose - Part 1: Low pressure mercury vapor discharge lamp 1 Scope This document specifies the product classification, technical requirements, test methods, inspection rules and marking, packaging, transportation and storage of low-pressure mercury vapor discharge ultraviolet germicidal lamps (hereinafter referred to as “lamps”). This document applies to double-capped, single-capped or self-ballasted lamps made of quartz glass or other ultraviolet-transmitting glass, with or without ozone and with an ultraviolet radiation peak wavelength of 253.7 nm. This document applies to lamps with a nominal power of less than 58 W, excluding cold cathode ultraviolet lamps. 2 Normative references The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. GB/T 1406.1 Types and dimensions of lamp caps - Part 1: Screw caps GB/T 1406.2 Types and dimensions of lamp caps - Part 2: Pin lamp caps GB/T 1406.5 Types and dimensions of lamp caps - Part 5: Bayonet caps GB/T 2797 Technical specification for lamp caps GB/T 2828.1 Sampling procedures for inspection by attributes - Part 1: Sampling schemes indexed by acceptance quality limit (AQL) for lot-by-lot inspection GB/T 2829 Sampling procedures and tables for periodic inspection by attributes (apply to inspection of process stability) GB/T 2900.65-2004 Electrotechnical terminology - Lighting GB/T 10682 Double-capped fluorescent lamps - Performance specifications GB 16843 Single-capped fluorescent lamps - Safety specifications The safety requirements of single-capped lamps, self-ballasted lamps and double- capped lamps shall comply with the corresponding provisions of GB 16843, GB 16844 and GB 18774, respectively. 5.3 Glass tube The glass tube of lamps shall be transparent and clean and shall not have defects that affect the transmission of ultraviolet rays. 5.4 Lamp holder The finished lamp shall be equipped with a lamp cap that meets the corresponding light source performance standards. The types and dimensions of pin, screw and bayonet lamp caps shall comply with the provisions of GB/T 1406.2, GB/T 1406.1 and GB/T 1406.5, respectively. Lamp caps of other specifications shall comply with the provisions of GB/T 2797. 5.5 Anti-ultraviolet radiation The insulating materials used for lamp caps and lamp housings shall be resistant to ultraviolet radiation, anti-ultraviolet aging and embrittlement. After completing the test in 6.9, the sample shall not have any changes that weaken its safety, the anti-electric shock performance of the insulating material shall not be reduced, the lamp cap and the lamp cap pins shall not be loose, and the insulating material shall not be cracked, bulged or shrunken. 5.6 Lamp dimensions The dimensions of double-capped lamps, single-capped lamps and self-ballasted lamps shall comply with the provisions of the corresponding model lamps in GB/T 10682, GB/T 17262 and GB/T 17263, respectively. 5.7 Starting characteristics Lamps shall have good starting characteristics, and the starting characteristics of double-capped lamps, single-capped lamps and self-ballasted lamps shall comply with the provisions of the corresponding power lamps in GB/T 10682, GB/T 17262 and GB/T 17263, respectively. 5.8 Initial electrical parameters The initial voltage value of double-capped lamps and single-capped lamps shall comply with the provisions of the corresponding power lamps in GB/T 10682 and GB/T 17262, respectively. When the self-ballasted lamp works at rated voltage and rated frequency, the deviation of its actual power consumption from the rated power shall not exceed 5 % + 0.5 W of For lamps with ozone output, the manufacturer needs to provide a curve of the change of ozone concentration over time, and the average peak value of the initial ozone output efficacy shall not be less than 80 % of the nominal value. 5.13 Ultraviolet radiation flux maintenance/life The average life of lamps shall not be less than 5000 h. The ultraviolet radiation flux maintenance of a single lamp for 2000 h shall not be less than 85 %, and the ultraviolet radiation flux maintenance at the end of life shall not be less than 65 %. 6 Test methods 6.1 Glass tube Inspect by visual method. 6.2 Lamp cap Inspect by corresponding gauge. 6.3 Anti-ultraviolet radiation For the anti-ultraviolet aging of insulating materials, after testing according to 6.9, use visual method and special gauges for inspection. 6.4 Lamp dimensions Use general measuring tools or special gauges with an accuracy of not less than 0.05 mm for inspection. 6.5 Starting characteristics and initial electrical parameters Single-capped lamps are tested according to the method specified in GB/T 17262. Self-ballasted lamps are tested according to the method specified in GB/T 17263. Double-capped lamps are tested according to the method specified in GB/T 10682. 6.6 Ultraviolet radiation efficiency, ultraviolet radiation flux Test according to the method specified in Annex A. 6.7 Ultraviolet radiation luminance Test according to the method specified in Annex B. 6.8 Ozone concentration/ozone output efficacy Test according to the method specified in Annex C. For ultraviolet lamps with ozone output used in dynamic airflow environments, refer to Annex D for testing. 6.9 Ultraviolet radiation flux maintenance/life Start timing according to the ignition time specified in Annex E, test and calculate according to Annex A. 7 Inspection rules 7.1 Inspection classification Inspection is divided into factory-exit inspection and type inspection. 7.2 Factory-exit inspection The samples for factory-exit inspection shall be uniformly taken from the same type of lamps produced daily (from each batch). Factory-exit inspection shall be carried out in accordance with GB/T 2828.1, and its inspection items, sampling plan, inspection level and acceptance quality level shall comply with the provisions of Table 4. The same type of products submitted for acceptance at the same time are a batch. The inspection rules for safety items in factory-exit inspection shall be in accordance with the relevant safety standards. 7.3 Type inspection Type inspection shall be carried out at least once a year. The samples for type inspection shall be uniformly taken from the lamps that have passed the factory-exit inspection. When the production of a product is suspended for more than half a year, or when the structure, main raw materials or production process of the product changes may affect the performance of the lamp, a type inspection shall be carried out. Type inspection shall be carried out in accordance with the one-time sampling plan of discrimination level I in GB/T 2829, and its inspection items, rejection quality level (RQL), sampling quantity (n) and acceptance judgment array (Ac, Re) shall comply with the provisions of Table 5. The inspection of quality supervision spot check shall be in accordance with the provisions of routine inspection. If the type inspection fails, production and acceptance shall be stopped until the new type inspection passes, then production and acceptance can be resumed. Type inspection shall also inspect all safety items. B.2.4 Ultraviolet probe The response of ultraviolet probes shall be within the UV-C band (including 253.7 nm). The cosine characteristics and nonlinear errors of ultraviolet probes shall meet the standard level requirements described in JJG 879-2015. The value of ultraviolet probes shall be traceable to the relevant national metrology and calibration agency. B.2.5 Test environment The ambient temperature when testing all photoelectric parameters shall be maintained at (25 ± 1) ℃. B.3 Measurement steps B.3.1 Fix the lamp under test on the optical track and ignite it according to the characteristics of the lamp. When the horizontal normal in the middle of the lamp passes through the ultraviolet radiation luminance meter probe, the luminous surface of the lamp (if any) shall be perpendicular to the optical track and parallel to the receiving surface of the ultraviolet radiation luminance meter probe. B.3.2 Install the ultraviolet radiation luminance meter on the optical track so that the normal of the receiving plane of the luminance meter coincides with the horizontal normal in the middle of the lamp under test. B.3.3 Adjust the position of the ultraviolet radiation luminance meter so that the receiving surface of the ultraviolet radiation luminance meter is 1000 mm ± 1 mm away from the surface of the lamp under test. B.3.4 Turn on the power of the lamp under test according to B.2 to ignite the lamp normally and preheat for 20 min. B.3.5 After the lamp is stable, open the shutter of the ultraviolet radiation luminance meter and read the reading of the ultraviolet radiation luminance meter directly. B.4 Safety operation requirements During the test, operators shall take effective measures to prevent ultraviolet radiation from causing ultraviolet burns to the eyes and exposed parts of the human body. Annex C (normative) Test method for ozone output (static method) C.1 Test principle At the end of the light path of the same absorption cell, measure the light intensity I and I0 of the light source with a peak wavelength of 253.7 nm after ozone absorption and without ozone absorption, and convert them into ozone concentration with the help of microcomputer processing. Ozone has the largest ultraviolet absorption coefficient for wavelength λ = 253.7nm. At this wavelength, ultraviolet light will attenuate when passing through the ozone layer, which conforms to the Lambert-Beer law, see formula (C.1). where: I0 - incident light intensity when no ozone exists; I - light intensity after light beam penetrates ozone; L - optical path length of ozone sample cell; K - absorption coefficient of ozone for light wavelength; ρ - mass concentration of ozone. According to this formula, under the condition that K and L are known, the ozone concentration value can be measured by detecting the values of I and I0. C.2 Test conditions C.2.1 The ignition circuit of the lamp shall comply with the provisions of B.1.4. A reference ballast is used. C.2.2 Test environment: temperature: 25 ℃ ± 1 ℃; relative humidity 30 % ~ 50 %; air pressure 860 kPa ~ 101.3 kPa; oxygen content in the air (volume fraction) 21 % ± 1 %. C.3 Test system C.3.1 The ozone output test system shall comply with the provisions of Figure C.1. The ozone collector is a closed container made of materials that are resistant to ultraviolet aging, ozone corrosion, and do not absorb ozone (preferably 304, 316 stainless steel, N - ozone output efficacy, in grams per kilowatt-hour [g/(kW · h)]; ρ - ozone mass concentration, in milligrams per cubic meter (mg/m3); V - ozone collector volume, in cubic meters (m3); t - time, in seconds (s); P - lamp power, in watts (W). C.6 Measurement steps C.6.1 Select an ozone analyzer with a suitable range, use the instrument according to the instrument instructions; place the ozone analyzer probe at the collector detection hole, the probe head is flush with the inner surface of the detection hole and is not allowed to extend into the collector, and prevent the probe head from being blocked during measurement. C.6.2 Place the lamp in the ozone collector, adjust the positioning table so that the horizontal normal of the lamp center is 250 mm away from the bottom of the collector, and the vertical normal of the lamp center is 1000 mm away from the detection surface, so that the lamp is in the center of the collector. The lamp head of single-capped lamps faces the detection hole and ignite according to the characteristics of the lamp. C.6.3 Record the sample mass concentration ρ, the ignition time t, and the lamp power P once a minute. To ensure the test accuracy, the test time of the ozone lamp shall not exceed 75 min. During the test, if the ozone concentration remains basically unchanged, the test can be stopped after recording 10 values; otherwise, it shall measure to the maximum test time. C.6.4 Calculate the ozone output efficacy per minute according to formula (C.2) and draw a curve of the change of ozone concentration over time. The average of the three largest values of ozone output efficacy during the test time is the average peak value of ozone output efficacy. C.6.5 The test time of ozone-free lamps is 1 h, during which at least 12 data are read at a certain interval to calculate the average value. C.6.6 After the test is completed, the ozone in the test room and the collector must be discharged from the test room to prevent affecting the accuracy of the next test. Exchange the air in the test room with fresh air to ensure that the oxygen content in the air in the test room is within the normal value. C.7 Safety operation requirements During the test, operators shall take effective measures to prevent ultraviolet radiation from causing burns to the eyes and exposed parts of the body, and to prevent inhalation Annex D (informative) Test method for ozone output (dynamic method) D.1 Test principle The principle of ozone concentration test is shown in Figure D.1. The dynamic measurement method established in this annex ignores the factors that affect the light output due to the airflow passing through the lamp tube changing the working temperature of the lamp tube, and compares the differences in ozone output of lamp tubes under the same test conditions. The principle of the test system: place the lamp in a specified box pipe system to simulate an ozone generator. The product of the ozone concentration value and the total gas volume entering the system is the ozone output. In actual use of the lamp, the ozone output is related to many factors, such as air flow rate, oxygen content, ambient temperature and humidity, gas composition, space size, lamp running time, etc. The purpose of the test system established in this annex and the test method given is to be able to scientifically compare the differences in ozone output between lamps. When using pure oxygen feed and controlling the lamp tube wall temperature by a certain method, the difference in the conversion of 185 nm ultraviolet radiation power into ozone output of lamps of different shapes and sizes can be calculated and compared. D.2 Test conditions D.2.1 Test environment: temperature: 25 ℃ ± 1 ℃; relative humidity: 30 % ~ 50 %; air pressure: 101.3 kPa; oxygen content in normal atmosphere (volume fraction) 21 % ± 1 %. D.2.2 The test circuit refers to the test circuit in Annex B. A reference ballast is used. D.3 Test system The dynamic ozone output test system must comply with the dimensions shown in Figure D.1, which are the dimensions inside the box pipe. The test system is made of materials that are resistant to ultraviolet aging, ozone corrosion, and no ozone adsorption. It should use 304 and 316 stainless steel materials, with matte treatment inside. Annex E (normative) Life test method E.1 Test conditions E.1.1 Test environment The test shall be carried out in an environment with no convection at 15 ℃ ~ 50 ℃, and the lamp shall not be subjected to severe vibration and collision when igniting. E.1.2 Power supply The power supply frequency shall be stable at 50 × (1 ± 0.5 %) Hz, and the voltage shall be stable at 220 (1 ± 2 %) V. E.1.3 Life ballast E.1.3.1 The ballast shall comply with the provisions of GB/T 10682 and GB/T 17262 and comply with the starting conditions of the lamp. E.1.3.2 When the ballast works with the test lamp at its rated voltage, the difference between the power consumed by the lamp and its rated value shall not exceed 4 %. The test lamp is a lamp of which the deviation of the voltage at both ends from the rated value shall not exceed 2 % when it works with the reference ballast. E.1.3.3 When the ballast works with a lamp with a starter, the deviation of the preheating current at rated voltage from the value specified in the corresponding parameter table shall be less than 10 %. E.2 Ignition time control The lamp is turned off for 15 min after igniting for 165 min. The off time is not included in the life time. E.3 Test method and test circuit The life test method and test circuit of lamps shall comply with the provisions of GB/T 10682, GB/T 17262 and GB/T 17263, respectively. E.4 Life calculation method The life of individual lamp is calculated as the cumulative time from the time when the lamp is ignited to “burnout” or the time when the ultraviolet radiation maintenance drops to the value specified in this document. The average life is calculated as the time when the ultraviolet radiation flux maintenance of n (n ≥ 10) lamps meets the ......


GB 19258-2012 GB NATIONAL STANDARD OF THE PEOPLE’S REPUBLIC OF CHINA ICS 29.140.30 K 71 Replacing GB 19258-2003 Ultraviolet germicidal lamp 紫外线杀菌灯 ISSUED ON. NOVEMBER 05, 2012 IMPLEMENTED ON. SEPTEMBER 01, 2013 Issued by. General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China; Standardization Administration of the People's Republic of China. Table of Contents Foreword ... 3 1 Scope ... 4 2 Normative references ... 4 3 Terms and definitions ... 5 4 Product classifications ... 8 5 Technical requirements ... 9 6 Test methods ... 11 7 Inspection rules ... 13 8 Marking, packaging, transportation and storage ... 14 Appendix A (Normative) Measurement of ultraviolet radiation luminance ... 16 Appendix B (Normative) Test methods of ultraviolet radiant flux and electrical parameters ... 21 Appendix C (Normative) Life test method ... 23 Appendix D (Normative) Ozone output rate test method ... 25 Foreword Clause 5.1, 5.3, 5.6, 5.7, 5.9, 5.10 and 8.2 a), b), and c) of this standard are mandatory, AND the rest is recommended. This standard was drafted in accordance with the rules given GB/T 1.1-2009. This standard replaces GB 19258-2003 “Ultraviolet germicidal lamp”. The differences between this standard and GB 19258-2003 are as follows. - MAKE re-test of the ultraviolet luminance of every specification; - PROVIDE the relevant provisions on the ultraviolet maintenance and service life maintenance. This standard was proposed by the China Light Industry Federation. This standard shall be under the jurisdiction of the National Lighting Standardization Technical Committee (SAC/TC 224). The drafting organizations of this standard. Zhejiang Chenhui Lighting Co., Ltd., Guangdong Cnlight Optoelectronics Technology Co., Ltd., Beijing Institute of Light Sources. The main drafters of this standard. Lu Guangming, Guo Pengxin, Peng Haijun, Gao Guangyi, Li Qijin. This standard was first released in 2003, AND this is the first revision. Ultraviolet germicidal lamp 1 Scope This standard specifies the product classification, technical requirements, test methods, inspection rules and marking, packaging, transportation and storage of low pressure mercury vapor discharge ultraviolet germicidal lamp (hereinafter referred to as “lamp”). This standard applies to the double-capped, single-capped or self-ballasted lamps which are manufactured by quartz glass, have or have no ozone, AND have the UV radiation peak wavelength of 253.7 nm. This standard applies to the lamps of the power of 65 W below. 2 Normative references The following documents are essential to the application of this document. For the dated documents, only the versions with the dates indicated are applicable to this document; for the undated documents, only the latest version (including all the amendments) are applicable to this Standard. GB/T 1406.1 Types and dimensions of lamp caps - Part 1. Screw caps (IEC 60061-1.2005, MOD) GB/T 1406.2 Types and dimensions of lamp caps - Part 2. Pin lamp caps (IEC 60061-1.2005, MOD) GB/T 1406.5 Types and dimensions of lamp caps - Part 5. Bayonet caps (IEC 60061-1.2005, MOD) GB/T 2828.1 Sampling procedures for inspection by attributes - Part 1. Sampling schemes indexed by acceptance quality limit (AQL) for lot-by-lot inspection (ISO 2859-1.1999, IDT) GB/T 2829 Sampling procedures and tables for periodic inspection by attributes (Apply to inspection of process stability) GB/T 10682 Double-capped fluorescent lamps - Performance specifications GB 16843 Single-capped fluorescent lamps - Safety specifications (IEC 1199.1993, IDT) GB 16844 Self-ballasted lamps for general lighting services - Safety requirements (IEC 60968.1988, IDT) GB/T 17262 single-capped fluorescent lamp performance requirements GB/T 17263 Single-capped fluorescent lamps - Performance specification GB 18774 Double-capped fluorescent lamps - Safety specifications (IEC 61195.1999, IDT) HJ/T 47-1999 Technical conditions of sampler for stack gas 3 Terms and definitions The following terms and definitions apply to this document. 3.1 Ultraviolet germicidal lamp A low-pressure mercury vapor discharge lamp using quartz glass or other through-violet glass that discharges to produce UV radiation mainly of a wavelength of 253.7 nm, AND the UV radiation can kill bacteria and viruses. 3.2 Ozone output efficacy The ratio of the amount of ozone generated by the lamp which is ignited at the specified conditions to the power consumed by the lamp within the unit time, in the unit of g / (kW • h). 3.3 Nominal value The value as indicated on the lamp. 3.4 Rated value The specific value of the lamp under the specified working conditions, the value and conditions of which are specified in this standard or by the manufacturer and seller. 3.5 Initial readings The measured start-up characteristics of the lamp prior to its aging and the UV radiation light, electrical and ozone characteristics measured after 100 h of aging. 3.6 Radiant flux Фe The power emitted, transmitted or received in the form of radiation, in the unit of W. 3.7 Ultraviolet radiant flux (Фe253.7) The ultraviolet radiant flux with the main wavelength of 253.7 nm, in the unit of W. 3.8 Irradiance Ee The radiant flux dΦe projected onto the surface element containing this point divided by this surface element area dA, in the unit of μW/cm2. 3.9 Ultraviolet radiation luminance Ee253.7 The ultraviolet radiation luminance with the main wavelength of 253.7 nm, in the unit of μW/cm2. 3.10 Radiant efficiency ηe The ratio of radiant flux emitted by a source to the power consumed by it. 3.11 Ultraviolet radiation efficiency ηe253.7 The ratio of the lamp’s initial ultraviolet radiant flux to the actual input power, expressed as a percentage. 3.12 Single-capped ultraviolet germicidal lamp A single capped lamp equipped with an internal starter or external starter AND connected to an external circuit. 3.13 Self-ballasted ultraviolet germicidal lamp A lamp that is integrated with a lamp cap, a ballast, and a lamp, which is not detachable unless otherwise damaging its structure. 3.14 Double-capped ultraviolet germicidal lamp Double capped tubular lamp. 3.15 Life (of individual lamp) The cumulative time from the ignition of a lamp to the point of “burnout” OR to the point when the lamp UV radiant flux maintenance degrades to the value as specified in this standard. 3.16 Average life (life to 50% failures) The accumulative time from the point when the lamp UV radiant flux maintenance reaches to the requirements of this standard AND is able to continue burn until 50% of lamps reach their individual life. 3.17 Ultraviolet radiant flux maintenance When the lamp ignites under specified conditions, the ratio of the ultraviolet radiant flux at a particular time during its lifetime to the initial ultraviolet radiant flux of the lamp, expressed as a percentage. 3.18 Reference ballast Inductive ballasts specially designed for lamps operating at AC power frequencies or resistive ballasts designed for lamps operating at high frequencies. It is used as a benchmark for checking other ballasts, selecting reference lamps, and checking lamps that are normally produced under their standardized conditions. Basic characteristics of a reference ballast are as described in the standards on ballasts. The ballast has a stable voltage/current ratio at rated frequency, AND is relatively immune to current, temperature, and changes in the surrounding magnetic field. 3.19 Calibration current of a reference ballast The current value based on which the reference ballast is calibrated or adjusted. 4 Product classifications 4.1 Classification and marking Lamp can be divided into double-capped lamp (represented by “S”), single-capped lamp (represented by “D”), and self-ballasted lamp (represented by “Z”) based on its shape; AND it can be divided into two types in accordance with the presence of ozone. ozone-contained lamp (represented by “Y”) and ozone-free lamp (represented by “W”). 4.2 Model naming method Example. ZW15S26W indicates the diameter 26 mm 15 W double-capped ozone-free ultraviolet germicidal lamp; ZW7D12Y indicates the diameter 12 mm 7 W single-capped ozone-contained ultraviolet germicidal lamp. 5 Technical requirements The design of the lamp, its structure and its performance shall be such that it is reliable in normal use AND not dangerous to the user and the surrounding environment. The bactericidal effect of the lamp is generally checked by conformity with all the specified tests. 5.1 Safety requirements The safety requirements of the single-capped lamps, self-ballasted lamps and double-capped lamps shall comply with the corresponding provision... ......

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