Step-in Dust Chamber
1. Introduction
The step-in dust chamber can meet the test requirements of IEC60529 for IP5X&IP6X tests and IEC60068-2-68 method La2 (constant air pressure). The object of this test is to determine the degree of protection against ingress of fine dust into electrotechnical products, like outdoor luminaire, household appliance, auto parts and other similar electrical products.
How it works?
This is a dust tightness test in which the specimen is exposed to a heavily dust-laden air flow containing non-abrasive powder of particle size <75μm, and checking the the physical and other relevant properties of the product to provide the basis for product design, improvement and verification. A vertical downwards air flow is specified for the test. Enclosures of a specified category are tested with the internal air pressure lower than the surrounding atmospheric air pressure in order to encourage the ingress of powder, and the specified quantity of powder ensures that the dust concentration is extremely high and uniform. Thus, this test chamber is equipped with a dust blower device for exciting and blowing the dust into the sealed test chamber.
2. Specification
| Model | PG-FC56-8000L |
| Working dimension | L2000mm*D2000mm*H2000mm |
| Outer dimension | L2650mm*D2250mm*H2700mm |
| Working power | AC 380V±10%, 50Hz±10%, 11KW (3phases 5wires, live wire+neutral wire+earth) |
| Temperature range | RT~+40℃ |
| Temperature evenness | ≤2℃ |
| Temperature fluctuation | ≤±0.5℃ |
| wire diameter and interval of metal net | 50μm/75μm |
| Airflow velocity | ≤ 2m/s |
| quantity of powder | 2-4kg/m3 (Circulating dust) |
| Dust falling way | Free fall |
| Dust dehumidification | Electric heating dehumidification |
| Dust blowing cycle | Periodic or continuous |
| Blowing time | 1S~999H (adjustable) |
| Vibration time | 1S~999H (adjustable) |
| Sand and dust | Dry talcum powder |
| Working conditions | Temperature:15℃～35℃, humidity:≤85%R.H. Pressure: 86kPa-106kPa |
| Control system | PLC+touch screen a. Control panel: set the power ON/OFF, E-stop button, vacuum pressure gauge, Exhaust flow meter b. Touch screen can set up blowing time/test time/periodic or continuous blowing cycle/test temperature c. English operation interface |
| Air circulation system | Arrange a dust blower and a circulating air duct at the bottom of the test chamber. And connect the outlet of the duct to the top of the test chamber. The dust recovery funnel at the bottom of the chamber is connected to the air inlet of the blower. The airflow in the test space is vertical airflow, and mix the dust and airflow, and forced loop in the test space during the test. |
| Vacuum system | Equipped with vacuum pump, vacuum gauge, air filter, flow meter, connecting pipe |
| Heating system | a. Finned Stainless Steel Armored Heater b. Heater control mode: non-contact periodic pulse width adjustment, SSR (solid state relay). c. Over-heating protector: The equipment has an independent over-temperature protection control system, which can effectively prevent the sample from being damaged due to excessive temperature in the chamber |
| Dust blower | A special high-pressure centrifugal fan is used to blow the test dust into the test space |
| Standard configuration | Observation window: 2 transparent glass observation windows Lead hole: φ50mm*1 (in the left side of the chamber) Sample rack tray: 1, capacity 300kg Lighting: 1 dust scraper: 2 Casters: 4 |
