GB/T 33906-2017 in English
VALIDLarge-scale electronic flash apparatus for photographic purposes
- Issued on:2017-07-12
- Implemented on:2018-02-01
- File Format:PDF
- Delivery:Via email within 1~3 business days
$214.00
| Standard No: | GB/T 33906-2017 |
| Document status: | VALID |
| Title in English: | Large-scale electronic flash apparatus for photographic purposes |
| Title in Chinese: | 摄影用大型电子闪光装置 |
| Language: | English |
| File Format: | Electronic (PDF) |
| Delivery: | Via email within 1~3 business days |
| Issued on: | 2017-07-12 |
| Implemented on: | 2018-02-01 |
| ICS Classification: | 37.040.10-Photographic equipment. Projectors |
| Chinese Classification: | N46-Camera and photograph instrument |
| Professional Classification: | GB-National Standard |
| Related Keywords: | large-scale electronic flash apparatus
large-scale electronic flash devices electronic flash devices flash index flash device model |
| Related Topics: | Dayong Electronics
Large Accelerator Facility electronic device film installation Molecular big come Photoelectric test device Electronic flash devices for lighting flash electron light electron light photonic device flash device Device big fruit GBT33906 GB/T 33906-2017 |
《GB/T 33906-2017摄影用大型电子闪光装置》由TC107（全国照相机械标准化技术委员会）归口，主管部门为中国机械工业联合会。
Introduction
1. Standard Overview
The National Standard of the People's Republic of China GB/T 33906-2017 "Large-Scale Electronic Flash Devices for Photography" (hereinafter referred to as "this standard") was proposed by the China Machinery Industry Federation and is under the jurisdiction of the National Technical Committee for Standardization of Photographic Machinery. This standard is mainly applicable to electronic flash devices for photography with AC and DC power supplies and stored energy of more than 100 joules.
2. Standard Framework Comparison
| Chapter | Content Overview | Key Analysis |
|---|---|---|
| 1 Scope | Specifies the terms and definitions, technical requirements, test methods and inspection rules for large-scale electronic flash devices for photography. | Clarifies the scope of application of the standard, especially the requirements for stored energy (≥100 joules). |
| 4 Technical requirements | Includes detailed provisions for technical parameters such as model naming, flash index, preparatory index, effective irradiation angle, etc. | Emphasises key performance indicators, such as the limit deviation of the flash index (±0.5 EV) and the minimum value of the effective irradiation angle (≥55°). |
| 5 Test methods | Detailed provisions for the test methods of various technical indicators, including flash index, preparatory index, effective irradiation angle, etc. | Requires the use of standard test instruments in GB10072-2003, and clarifies the test conditions and operating procedures. |
3. Interpretation of core technical requirements
3.1 Model naming and nominal energy value
The nominal energy value must be included in the flash device model, and the nominal energy value deviation should not exceed 10% of the stored energy value. This requirement ensures product consistency and traceability.
3.2 Flash index and measurement method
The flash index is an important indicator for measuring the performance of the flash device. The nominal value should be based on the nominal index at 220V±1V. The limit deviation between the measured value and the nominal value is ±0.5 EV.
3.3 Technical requirements for effective illumination angle
The nominal value of the effective illumination angle should be no less than 55°, and the measured value should not be lower than the nominal value. At the same time, the limit deviation of light output between the four points on the edge of the cross and the center point is -1.0 EV.
4. Implementation Suggestions
4.1 Equipment Selection and Procurement Suggestions
- Select a flash device with an appropriate energy level (≥100 joules) according to the shooting requirements.
- Give priority to well-known brand products that meet the GB/T 33906-2017 standard to ensure quality and performance.
4.2 Quality Control and Testing Suggestions
- During the procurement and acceptance stage, focus on checking whether key indicators such as the flash index and effective irradiation angle meet the standard requirements.
- Establish a regular maintenance and testing mechanism to ensure the long-term stable operation of the equipment.
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