GB 7793-2025 Hygienic standard for day lighting and artificial lighting for middle and elementary school English, Anglais, Englisch, Inglés, えいご
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ICS 13.100
CCS C 56
National Standard of the People's Republic of China
GB 7793-2025
Replaces GB 7793-2010
Hygienic standard for day lighting and artificial lighting for middle and elementary school
中小学校教室采光和照明卫生标准
(English Translation)
Issue date: 2025-10-05 Implementation date: 2026-11-01
Issued by the State Administration for Market Regulation
the Standardization Administration of the People's Republic of China
Contents
Foreword
1 Scope
2 Normative references
3 Terms and definitions
4 Hygienic requirements for classroom daylighting
5 Hygienic requirements for classroom lighting
6 Detection
Bibliography
Hygienic standard for day lighting and artificial lighting for middle and elementary school
1 Scope
This document specifies the hygienic requirements for daylighting and lighting in primary and secondary school classrooms, and describes the corresponding testing methods.
This document applies to ordinary primary and secondary schools and secondary vocational schools. Off-campus training institutions for primary and secondary school students are used for reference.
2 Normative references
The following documents contain requirements which, through reference in this text, constitute provisions 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 2900.65 Electrotechnical terminology - Lighting
GB/T 5699 Method of daylighting measurements
GB/T 5700 Methods of lighting measurement
GB/T 5702 Method of measuring the color rendering properties of light sources
GB/T 7000.1 Luminaires - Part 1: General requirements and tests
GB/T 7922 Method of measuring color of light sources
GB 28231 General provisions of safety and health for writing boards
GB/T 36979 Measuring method of spatial distribution of color characteristics for LED products
GB/T 39942 Application of GB/T 20145 for the assessment of blue light hazard to light sources and luminaires
GB/T 40070 Hygienic requirements of study products for myopia prevention and control in children and adolescents
GB/T 42064 Equipment for general lighting purposes - Flicker characteristics - Test method applying light flickermeter
GB 43472 Luminaires and electrical supply track systems for luminaires - Safety requirements
GB 43473 Controlgear and other auxiliaries for electric lighting products - Safety requirements
GB/Z 45064 Equipment for general lighting purposes - Stroboscopic effects - Objective test method
GB 50033 Standard for daylighting design of buildings
GB/T 50034 Standard for lighting design of buildings
GB 50099 Code for design of school
3 Terms and definitions
The terms and definitions defined in GB/T 2900.65, GB/T 5699-2020, and GB/T 50034, as well as the following, apply to this document.
3.1
classroom
room where teachers conduct teaching activities for students
Note 1: Classrooms include general classrooms, special classrooms and public teaching rooms.
Note 2: Special classrooms include computer classrooms, laboratories, art classrooms, music classrooms, dance classrooms, etc.
Note 3: Public teaching rooms include combined classrooms, student activity rooms, psychological counseling rooms, lecture rooms, multi-functional classrooms, etc.
[Source: GB 40070-2021, 3.6, modified]
3.2
secondary vocational school
various vocational schools such as regular secondary technical schools, vocational high schools, technical and industrial schools, approved in accordance with relevant national regulations to implement full-time secondary academic education
3.3
daylight factor
ratio of the illuminance at a point on the indoor reference plane, produced by directly or indirectly receiving sky diffused light from an assumed and known sky brightness distribution, to the sky diffused light illuminance produced by the same sky hemisphere on an unobstructed outdoor horizontal plane at the same time
[Source: GB 50033-2013, 2.1.5]
3.4
uniformity of daylighting
ratio of the minimum value to the average value of the daylight factor on the reference plane
3.5
writing board
non-electronic display board that can be erased after writing with chalk or whiteboard markers, and fixed with supports such as backing plates and frames
Note: Writing boards include whiteboards, chalk boards, etc.
3.6
transmitting colour rendering index
general color rendering index of solar radiation after passing through glass
3.7
visible transmittance
ratio of the visible light flux transmitted through the light-transmitting material to the visible light flux incident on its surface
[Source: GB 50189-2015, 2.0.5]
3.8
short-term flicker indicator of illuminance
measure of the degree of influence of low-frequency (within 80Hz) light output flicker in the short term without applying voltage fluctuations
3.9
stroboscopic effect visibility measure; SVM
measure of the degree of influence of stroboscopic effect in the short term when the light output frequency range is 80Hz~2000Hz
3.10
maintained average illuminance
average illuminance on the specified surface when the lighting device requires maintenance
[Source: GB/T 50034-2024, 2.0.9, modified]
4 Hygienic requirements for classroom daylighting
4.1 When the classroom adopts unilateral lighting, the light should enter from the left side of the student's seat; When bilateral lighting is used, the main lighting direction should be from the left side of the student's seat. The north classroom in the south corridor should take the north window as the main lighting surface.
4.2 The standard values of daylighting coefficients of ordinary classrooms in various light climate zones and the average daylighting coefficients of side lighting desks should comply with the provisions of Table 1.
