Instrument use:
   This test box is used for low-voltage electrical appliances, communications, motors, instruments, lamps, household appliances and other products. It is often affected by sand and dust environments during storage, transportation and use. Especially automobiles and electrical appliances are more significantly affected by sand and dust. This equipment is a test equipment that uses artificial sand and dust environment to test the dust-proof ability of the product, and meets the test requirements of IP protection level IP5X.
fulfill the standard:
GB2423.37-2006 dustproof test method
GB4208-2008 /IEC 60529-2001 Enclosure protection grade (IP code)
GB10485-2007 Dustproof test method
GB7000.1-2007 (IEC60598-1:2006) Dustproof test of lamps
DIN 40050-9 Falling dust test specification
ISO 20653-2013 Road Vehicles-Dust Test Method (International Protection Class Code)
QC/471.1-2001 Automotive Wiring Harness Connector Part 1 Dust Test Method
Main technical specifications:
*Inner box size: D3500×W2500×H2200 mm
*Outer box size: D3700×W2700×H3700 mm
*. Try a sample: control cabinet
*Test box structure: outer box material: high-quality cold-rolled plate spraying; inner box material: SUS304 stainless steel;
*Wind path components: centrifugal fan;
*Test hole: 1, Ø50;
*Recycling system: dust can be recycled;
*Dust concentration: 2～4kg/m3 (can be increased or decreased according to test requirements);
*Sample: dry talcum powder, fly ash;
*Test piece power socket: dustproof socket;
*Nominal wire warp of metal screen: 50um; standard distance between wires: 75um;
*Sample rack (sample rail car): equipped with rails, bearing capacity of 2 tons (uniform load);
*Observation window: one, which can conveniently observe the samples in the laboratory, equipped with a manual scraper;
*Lighting lamp: explosion-proof and moisture-proof incandescent lamp, which is convenient for better observation of the condition of the sample in the box;
*Time controller: intermittent, period and vibration time:
*Dust blowing time (stop, blowing) h/m/s adjustable,
*Cycle cycle: arbitrarily adjustable,
* Preset test time: 0s～999h99m99s adjustable,
*Power on: off-on-off;
*Function: Blowing dust, floating dust, flowing dust, can be used for gap and periodic tests;
*Dust dehumidification: electric heating dehumidification;
*Sand dust circulation system: forced circulation by centrifugal fan, dust injection time can be adjusted arbitrarily.
* Vibrator: The outer wall of the hopper is equipped with an electric vibrator. Due to long-term operation, dust will inevitably adhere to the inner wall and the four walls of the cone hopper. Therefore, it is necessary to use a vibrator to periodically vibrate , The vibration time and interval time are set by the control screen to make the dust adhered to the wall vibrate off and maintain the required concentration value for the test.
* Structure and material:
* The inner tank is made of SUS304 stainless steel plate, and the outer shell is sprayed on the surface of cold rolled plate. The inner wall of the test box is smooth and flat; the dust is blown in from the top of the back of the test box, and the bottom of the test box is sucked out. The dust collection container is located at the bottom of the test box (four buckets and four fans), double door with observation window (500mm*500mm), left One lead hole (size ￠50mm, with silicone plug).
*A sample rail car (above the funnel) is equipped in the test room, which is movable and convenient for taking samples.
* Take and place samples: put the sample on the sample rail car, use a forklift to lift the sample rail car and the sample into (take out) the test room.
*The bottom of the sample rail car directly below the door is suspended 150mm (the bottom of the sample rail car is away from the lower eaves of the door hole), so that the forklift feet can reach in (or manual hydraulic forklift);
*This laboratory is equipped with a movable door-opening staircase: about 1.5m high and 1.2m wide, divided into 5 or 4 levels, which is convenient for people to open (close) the door.
The equipment is equipped with a vacuum pump for vacuuming the sample (meets IP6X test requirements).
Remarks: Adopt library board type shell, assembled on site.
 Control System:
*Time controller: PLC programmable controller (this controller has the following multiple arbitrary setting control functions);
*Electrical components: The main vitality parts are all produced by domestic joint ventures;
*Main configuration: circulating fan, heater, time controller, etc.;
*Temperature controller: domestic high-precision temperature regulator.
*Power supply: *AC380V±10% 50Hz three-phase five-wire (ground protection);
*High power: 8KW;
*Large current: 18A;
* Air switch capacity: 32A;
Ambient pressure: 86Kpa-106Kpa; (atmospheric environment).
Security device:
*Air switch (to prevent overcurrent and short circuit);
* Fan overheat protection (protect the blower and prevent the fan from overheating);
*Vacuum cleaner overpressure, overheating, overcurrent protection (to prevent pressure, temperature, and current from being too high);
*Over temperature protection (to prevent air burning)
*Fuse (to prevent short circuit of control circuit and lighting circuit);
*External sample abnormal alarm (user selectable, the equipment stops running after the test product fails);