The working principle of the sand and dust test chamber

The sand and dust test chamber can also be called a dustproof testing machine, dust proof chamber, etc. It is used to test the physical and other related properties of electronic and electrical products, lamps, cabinets, electrical components, automobiles, motorcycles, and their components under simulated dust climate conditions. After testing, the performance of the product and whether it meets the requirements in working condition are judged through verification.

Executive standards for sand and dust test chambers:
Comply with the requirements of IEC60529:1989+A1:1999+A2:2013 Degrees of Protection Provided by Enclosures (IP Code), Clause 13.4 and 13.5 of GB4208-2017 Degrees of Protection Provided by Enclosures (IP Code) and Figure 3, as well as Clause 9.2.1, 9.2.2 and Figure 6 of GB7000.1 Luminaires Part 1: General Requirements and Tests.

Working principle:
The sand and dust test chamber is a powder circulation pump in a closed test chamber that can be replaced by other methods that can suspend talc powder. Talc powder should be filtered through a metal square mesh sieve. Straight wire diameter 50 μ m. Sieve size is 75 μ m。 The dosage of talc powder is 2kg per cubic meter of the test chamber volume, and the number of uses shall not exceed 20.

Environmental conditions:
①. Temperature: 5 ℃~35 ℃
②. Relative humidity: ≤ 85%
③. Air pressure: 86kPa~106kPa

Power supply conditions:
①. Voltage and frequency: AC220V ± 10%; 50Hz±10% ； Live wire+neutral wire+protective ground wire
②. Installed power: 1.5kW
③. Protective ground wire grounding resistance: The grounding resistance of the protective ground wire is less than 4 Ω

Power switch conditions:
1. Require users to equip the equipment with a leakage protection air switch of corresponding capacity at the installation site, and this switch must be independently used for this equipment;
2. Prohibit the use of knife switches or power sockets;
3. The leakage protection air switch should be located no more than 2 meters away from the equipment.

Usage site requirements:
①. The requirements for the use site of the sand and dust test chamber are: the ground is flat, and the ground bearing capacity is not less than 200kg/m2;
②. The site of the sand and dust test box is well ventilated, and there is no strong vibration, strong electromagnetic field influence, or flammable and explosive corrosive substances around it;
③. Leave appropriate space for use and maintenance around the sand and dust test chamber;

Can the sand and dust test chamber be tested with sand particles?
In fact, for testing sand and dust test chambers, if sand particles are used, they are an irregular object with varying shapes and sizes. Therefore, it is possible that the test standards may not be met, and some particles may become too large and block the screen. In more severe cases, it may cause damage to the screen and operational issues with sand and dust test equipment.

Media for sand and dust test chamber:
1. Crystalline minerals, olivine or feldspar;
2. Talc;
3. FE powder.
Requirements for using dust:
①. Test dust: dry talc powder
②. Harmless to human health

LISUN lauched 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.

Dustproof Testing Machine SC-015

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.

Our main products are Goniophotometer, Integrating Sphere, Spectroradiometer, Surge Generator, ESD Simulator Guns, EMI Receiver, EMC Test Equipment, Electrical Safety Tester, Environmental Chamber, Temperature Chamber, Climate Chamber, Thermal Chamber, Salt Spray Test, Dust Test Chamber, Waterproof Test, RoHS Test (EDXRF), Glow Wire Test and Needle Flame Test.

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