HOME   Cart(2)   Quotation   About-Us Policy PDFs Standard-List
www.ChineseStandard.net Database: 189759 (19 Oct 2025)

GB/T 7002-2008 English PDF

US$229.00 · In stock
Delivery: <= 3 days. True-PDF full-copy in English will be manually translated and delivered via email.
GB/T 7002-2008: Photometry for floodlight
Status: Valid

GB/T 7002: Evolution and historical versions

Standard IDContents [version]USDSTEP2[PDF] delivered inStandard Title (Description)StatusPDF
GB/T 7002-2008English229 Add to Cart 3 days [Need to translate] Photometry for floodlight Valid GB/T 7002-2008
GB/T 7002-1986English479 Add to Cart 4 days [Need to translate] Photometry for floodlight Obsolete GB/T 7002-1986

PDF similar to GB/T 7002-2008


Standard similar to GB/T 7002-2008

GB/T 7000.201   GB/T 7000.204   GB 7000.201   GB/T 7000.202   GB/T 7000.1   

Basic data

Standard ID GB/T 7002-2008 (GB/T7002-2008)
Description (Translated English) Photometry for floodlight
Sector / Industry National Standard (Recommended)
Classification of Chinese Standard K72
Classification of International Standard 29.140.40
Word Count Estimation 10,195
Date of Issue 2008-06-18
Date of Implementation 2009-05-01
Older Standard (superseded by this standard) GB/T 7002-1986
Quoted Standard GB/T 9468-2008; EN 13032-1: 2004
Regulation (derived from) Announcement of Newly Approved National Standards No. 10 of 2008 (total 123)
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 standard specifies the floodlight lighting photometric testing methods, and to cast light lighting photometric testing laboratory facilities, testing and cast light lighting photometric test reports to provide guidance. This standard applies to the use of electric light, have a stable vision lighting, installed in the indoor and outdoor floodlight lighting (hereinafter referred to as Floodlights) photometric tests. Movie or stage with a spotlight, canopy lights, etc. can refer to this standard for testing. This standard does not apply to road lighting luminaires, this standard does not apply to the corner less than half the peak of 2 �� (such as searchlights) lamps. This standard should be GB/T 9468 used together.

GB/T 7002-2008: Photometry for floodlight

---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.
Photometry for floodlight ICS 29.140.40 K72 National Standards of People's Republic of China GB/T 702-2008 Replace GB/T 702-1986 Projection lighting fixture photometric test 2008-06-18 released 2009-05-01 implementation General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China Issued by the National Standardization Administration of China

Table of contents

Foreword Ⅰ 1 Scope 1 2 Normative references 1 3 Terms and definitions 1 4 Photometric testing facilities 1 5 Measurement process 2 6 Accuracy of test results 5 7 Data processing and reporting 5 GB/T 702-2008 Projection lighting fixture photometric test

1 Scope

This standard specifies the photometric test method for cast-light lighting fixtures, and provides laboratory facilities, tests and projections for the photometric test of cast-light lighting fixtures. The photometric test report of the lighting fixture provides guidance. This standard applies to the use of electric light sources, stable visual lighting, installed indoor and outdoor project-light lighting fixtures (hereinafter referred to as project-light fixtures) Photometric test. Spotlights and skylights used in movies or on stage can be tested with reference to this standard. This standard does not apply to the photometric test of road lighting lamps, nor does this standard apply to lamps with a half-peak angle less than 2° (such as searchlights). This standard should be used together with GB/T 9468.

2 Normative references

The clauses in the following documents have become clauses of this standard after being quoted in this standard. For dated reference documents, all subsequent The amendments (not including errata content) or revisions do not apply to this standard. However, all parties that have reached an agreement based on this standard are encouraged to study Is the latest version of these files available? For undated reference documents, the latest version is applicable to this standard. GB/T 9468-2008 General requirements for luminosity measurement of luminaires EN13032-1..2004 Measurement and expression of photometric data of lights and lamps and luminaires Part 1.Measurement and file format

3 Terms and definitions

GB/T 9468-2008 and the following terms and definitions are applicable to this standard. 3.1 Generally, the optical axis refers to the centerline of the beam emitted by the projection lamp. Generally speaking, the optical axis should be marked by the lamp manufacturer's logo. If not, there should be at least one direction in the adjustable direction of the luminaire Mark, the position of the optical axis corresponding to the mark is determined by photometric test. For the measurement of the optical axis, see 5.2.2.2. 3.2 On a plane containing the maximum light intensity, the angle between two rays of one-tenth of the maximum light intensity is called the beam expansion of the plane. Divergent angle. For the measurement of the beam divergence angle, see 5.2.2.1. 3.3 On the half-plane passing through the maximum light intensity, the angle between the direction of maximum light intensity and 50% of the direction of maximum light intensity is called the half-peak of the half-plane Corner.

4 Photometric testing facilities

4.1 Laboratory requirements for testing The provisions of Appendix B of GB/T 9468-2008 apply. 4.2 The photometric coordinate system of the luminaire Apply GB/T 9468-2008 Appendix A and the following 4.2.1 regulations. 4.2.1 Goniometer The measurement of floodlight lamps can be performed on both A-plane system goniometers (A-type goniometers) and B-plane system goniometers (B-type goniometers). GB/T 702-2008 Rotation in different directions, but the angle indications obtained by the two rotation methods are different. The selected coordinate system must not only be able to express the projection lamp The distribution data of the luminous intensity should be suitable for the calculation of the illuminance of the projection lamp on the plane under various tilt angles. The data of the A-plane system can be used to calculate the illuminance of the elevation of all kinds of projection lamps whose angles are adjusted around the vertical axis, generally around the vertical axis. Angle projection lamps can use A-type goniometers, but there are certain restrictions on the light source, that is, when measuring, when the inclination angle of the projection lamps changes, the light The luminous flux of the source changes and should be corrected. The data of the B-plane system can be suitable for the calculation of the illuminance of various projection lamps that adjust the tilt angle around the horizontal axis, and generally adjust the tilt around the horizontal axis. The oblique projection lamps all use the B-type goniometer, but there are certain restrictions on the light source, that is, when the inclination angle of the projection lamp changes, the light source The luminous flux cannot be changed. For light sources with changes, the luminous flux changes that occur should be corrected. The accuracy requirements of the goniometer angle. 2°< θ≤4° ±0.1° 4°＜θ≤8° ±0.2° θ＞8° ±0.4° θ is the half-peak side angle on the vertical and horizontal half-planes containing the maximum light intensity. The C-plane system is suitable for the photometric measurement of road lighting and indoor lighting. It can be used as long as the optical axis of the lamp is vertically downward. C-plane system goniometer (C-type goniometer). Certain types of Goniophotometers use this system to provide data and are used for floodlighting. For the photometric test of lamps, Table A in Appendix A of GB/T 9468-2008 should be used. 1 The conversion formula given. 4.3 Preparation of light source, ballast and luminaire for test The provisions of Appendix C of GB/T 9468-2008 apply.

5 Measurement process

5.1 General requirements and inspections of the lamps under test 5.1.1 The appearance of the tested luminaire is complete, and the optical accessories, especially the reflector and the front glass should be intact. The contaminated lamps cannot be tested normally. 5.1.2 The installation position of the light source in the luminaire should be strictly in accordance with the requirements of the original design drawings, and be adjusted properly before leaving the factory. Adjustable light source position If it is installed, it should be clearly marked on the lamp or lamp holder, and have specific dimensions on the design drawings. 5.1.3 The angle adjustment mechanism of the lamp should be adjustable, reliable, and have obvious direction marks. 5.2 Photometric method and actual test procedure The provisions of Chapter 5 in GB/T 9468-2008 and the following 5.2.1 to 5.2.2 apply. 5.2.1 Determination of test distance The optical test distance refers to the distance from the luminosity center of the lamp to the surface of the luminosity probe. A long enough test distance is to ensure the measurement of luminous intensity One aspect of accuracy, the test distance is determined by the following two regulations. 5.2.1.1 Determine the test distance according to the inverse square law of illuminance and distance The distance of the light intensity test should follow the inverse square law of illuminance and distance within the feasible range. In general, the test distance should not be less 15 times the maximum size of the light exit surface of the lamp. However, for lamps with approximate cosine distribution on the plane passing through the long axis of the lamp, the minimum measurement The test distance can be 15 times the size of the light-emitting surface perpendicular to the axis of the light source or 5 times the size of the light-emitting surface parallel to the axis of the light source. Most used The small test distance should be the larger of the two distances. 5.2.1.2 Determine the measurement distance according to the beam crossing point To determine the measurement distance, refer to the provisions of EN13032-1, as follows. As a function of the diameter s. The point at the minimum measurement distance is called the "beam crossing point", and when viewed at this position, the luminaire is completely shining. The measured distance is only when the distance is greater than this point, the inverse square law of distance is valid, the distance from the luminosity center of the lamp to the "beam crossing point" Dmin is calculated by the following formula. GB/T 702-2008

6 Accuracy of test results

The provisions of Chapter 6 of GB/T 9468-2008 apply.

7 Data processing and reporting

The provisions of Chapter 7 of GB/T 9468-2008 and the following 7.1 to 7.3 apply. 7.1 Report content The photometric data processing of floodlight lamps is based on the measured data, calculated according to a certain procedure, and the results are reported. Photometric data one Generally, it should include the following content. maximum light intensity value and optical axis position, beam spread angle, light intensity distribution curve, iso-light intensity map, regional luminous flux, lamps Effective luminous flux, effective efficiency of lamps, total luminous flux of lamps, lamp efficiency, etc. 7.2 Processing of photometric data In the data processing, the luminous flux of the light source should be converted to the value of every 1000 lm of the naked light source output in order to unify the format and facilitate comparison. 7.2.1 The photocurrent of the light source relative to the luminous flux Calculate the relative luminous flux Fr of the light source with the obtained photocurrent (arbitrary unit) of each ring of the light source. Where. ω犼---the solid angle on the jth ring. Introduce the coefficient K. K =1000/Fr 7.2.2 Calculation of the light intensity at each angle of the luminaire The light intensity I (V.H) at each angle when the luminous flux is 1000lm, the unit is cd/1000lm. 7.2.3 Calculation of regional luminous flux Calculate the solid angle (area constant) in each interval angle according to the interval angle used in the measurement of the lamp and compare the area constant with the corresponding area 7.2.4 Calculation of effective luminous flux and effective efficiency of lamps η effective = (effective/1000)×100% 7.2.5 Total luminous flux of lamps and lamp efficiency Add up the luminous flux of each area in the range greater than 1% of the maximum luminous intensity, and the sum is the total luminous flux of the lamp (total). The ratio of the total luminous flux of the lamp to 1000lm is the lamp efficiency. η = (total/1000)×100% 7.3 Expression of light intensity distribution The light intensity distribution can be expressed in various ways, and the following three ways of expression are recommended. 7.3.1 Data sheet Each V plane (X plane) is a row, H angle (Y angle) is a column, and the light intensity values are listed (see Table 2). 7.3.2 Light intensity curve The light intensity curve is drawn on rectangular coordinates, the abscissa is H or V angle, and the ordinate is the light intensity value. GB/T 702-2008

Tips & Frequently Asked Questions:

Question 1: How long will the true-PDF of GB/T 7002-2008_English be delivered?

Answer: Upon your order, we will start to translate GB/T 7002-2008_English as soon as possible, and keep you informed of the progress. The lead time is typically 1 ~ 3 working days. The lengthier the document the longer the lead time.

Question 2: Can I share the purchased PDF of GB/T 7002-2008_English with my colleagues?

Answer: Yes. The purchased PDF of GB/T 7002-2008_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 [email protected]. 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.

Question 5: Should I purchase the latest version GB/T 7002-2008?

Answer: Yes. Unless special scenarios such as technical constraints or academic study, you should always prioritize to purchase the latest version GB/T 7002-2008 even if the enforcement date is in future. Complying with the latest version means that, by default, it also complies with all the earlier versions, technically.