The importance of dust chambers in solar light product testing

The enclosure protection is divided into two parts. The first part is to prevent access to dangerous parts and solid relics, and the second part is to prevent water from entering. Here introduces ip5x dust proof test and ip6x refers to dust tightness test to prevent solid from entering.

Dust penetrates into the product, and its effects on the product include:
1. Invade seals and housings;
2. Change electrical performance, such as contact resistance, track resistance and surface leakage current;
3. Block and wear moving parts such as bearings;
4. Pollute the optical surface, pollute the lubricant, and abrade the surface;
5. Block vent, pipeline, filter, operation hole, etc;
6. Dust can be used as the core of water vapor condensation to promote abrasion and mold growth

For dust prevention requirements, ip6x should be higher than ip5x. Ip6x does not allow dust to penetrate into the tested object, while ip5x allows part of dust to enter, but the entered dust does not affect the normal operation and safety of the equipment:
1. Enclosure type:
The first kind: the air pressure in the shell during the normal working cycle of the equipment is lower than the surrounding atmospheric pressure, such as caused by the thermal cycle effect;
The second kind: the air pressure in the shell is the same as the surrounding atmospheric pressure During ip5x test, except for the second kind of shell specified in relevant product standards, the shell is regarded as the first kind, and negative pressure test is applied; During ip6x test, products are regarded as the first kind of shell, and negative pressure test is applied.

2. Test conditions:
The first kind of shell: the pressure in the shell is maintained by a vacuum pump, the air extraction volume is 80 times the volume of the tested shell or vulnerable parts, the air extraction speed is not more than 60 times the volume of the shell per hour, and the pressure difference shall not exceed 2KPa (20mbar) in any case The air extraction speed is 40-60 times the shell volume /h, and the test is carried out for 2h; If the maximum pressure difference is 2KPa (20mbar) and the air extraction speed is less than 40 times of the shell volume /h, the test can be stopped only after 80 times of the volume or 8 hours.
Note: the shell volume can generally measure the length, width and height of the product and calculate the volume For complex locations, the volume can be calculated by drawing size.
The second kind of shell: put the tested shell into the test box according to the normal working position, without connecting the vacuum pump, and the test lasts for 8h.

3. Acceptance basis:
Ip5x receiving conditions: after the test, if there is dust entering, but the amount of dust entering does not affect the normal operation and safety of the equipment, it is considered to be qualified
Ip6x receiving conditions: after the test, if there is no obvious dust deposition in the shell, it is considered to be qualified.

Because of dust can penetrate into the product and cause varying degrees of damage to the product, so the dust chambers is very importance in solar light product testing. LISUN lached SC-015 Dust-proof Test Chamber (Sand Dust Chamber) is applied to physical and other related performance tests for electronic and electrical products, lamps, electrical cabinets, electrical components, automobiles, motorcycles and their parts and other products under simulated dust climate conditions. After the measurement, it is judged whether the performance of the product meets the requirements through verification, so as to facilitate the design, improvement, verification and factory inspection of the product. Comply meets IEC60529:1989 +A1:1999 +A2: 2013 <Degrees of protection provided by enclosures (IP Code)>,IEC60598-1,  GB2423.37-89 (Test L: dust test methods), GB4208, GB/T 4942.2-93(protective casing grade of low-voltage apparatus), GB7000.1 <Luminaires Part 1: General Requirements and Tests> 9.2.1, 9.2.2 and Figure 6, DIN40050 and IP5K0. The dust test chamber is applicable to the IP5X and IP6X dustproof test of the products.

SC-015 Dustproof test chamber

Lisun Instruments Limited was found by LISUN GROUP in 2003. LISUN quality system has been strictly certified by ISO9001:2015. As a CIE Membership, LISUN products are designed based on CIE, IEC and other international or national standards. All products passed CE certificate and authenticated by the third party lab.

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