First, the scope of application
The rain test chamber is a test chamber for artificially simulating rain. It is well known that all components and equipment in an atmospheric environment, whether in working condition or storage state, will be affected by various waters to varying degrees, of which rain is most common. The rain test is to prevent the degree of change in the work efficiency of these equipments during or after rainwater infiltration and rain.
The performance indicators of this test chamber all meet the water test method in GB2423.38-93 "Basic Test Regulations for Electrical and Electronic Products" and GJB150.12 "Test Methods for Military Products", and GB10485 "Environmental Test Standards for Lighting" applicable to the lighting industry, etc. Special functions need to be submitted to the company at the time of ordering.
Second, the performance characteristics
1, temperature range: RT - 35 ° C (room temperature);
2, relative humidity: 80% ~ 98% R · H (in-box humidity);
3. Features: The inner casing of the test box is made of 304-2B stainless steel. The outer shell is made of stainless steel hairline plate. It is beautiful and never rust. The inner shell is made of stainless steel argon arc welding, sealed and not leaking. . The turntable and the water swing pipe are respectively controlled by the frequency conversion controller and the governor. The inverter directly displays the motor frequency, and can also display the voltage, current and other parameters of the motor (for detailed operation, refer to the inverter manual, but other parameters inside the inverter are cut. Do not change, otherwise it will affect the normal use of the equipment);
4. The water pressure is adjustable during the water spray test;
Third, the operating instructions:
1. The waterproof test box is mainly used for testing electrical and electronic products in rainwater environment:
(1) Protective cover or protective cover to prevent the effectiveness of rain;
(2) Physical damage caused by equipment rain;
(3) The ability of the equipment to meet its performance requirements during or after exposure to rain;
(4) Whether the rainwater removal system is effective;
2. Rain is a sediment formed by liquid water droplets. Rain has many characteristics, such as rainfall intensity, rain droplet size and speed, physical and chemical properties of rain, various characteristics of rain or their combination, which will produce different kinds of equipment. Impact.
Raindrop diameter for different types of rain:
Types of
Maximum raindrops (mm)
Medium raindrops (mm)
General
/
/
Thunder shower
8
1.4
Shower
5
1.7
Smooth rain
4.7
1.6
Fourth, the operation method:
When testing IPX34:
1. Open the door in the box to the three barrels of pure water and connect it to the power supply. (The equipment must be reliably grounded.) Place the sample on the circular turntable in the test box. The power must be connected first. The waterproof power socket on the turntable is the sample power supply (horizontal two jacks), and the voltage is: AC220V;
2. Close the test box door, open the “power†switch, set the time controller and then turn on the “rain†switch. The “pendulum speed control†governor is powered on, press the “REV/JOG†button on the governor. Adjust the knob clockwise. The working frequency of the pendulum tube motor can be seen from the display frame. Adjust the appropriate frequency. Turn on the “turntable†switch, and the “turntable speed control†indicator light will be on and the speed will be turned on. On the switch, the rotation of the turntable is seen from the observation window, and the twist can be appropriately adjusted according to the rotation of the turntable.
3, time setting, you should first set the time value, then turn on the time switch, the sample power switch is also the same;
4. After the test is finished, the pendulum tube should be returned to the zero position, the control part of the power supply should be turned off, and then the water inlet system should be closed.
When testing IIPX56:
IPX5: The orifice diameter is 6.3mm, the water spray volume is adjustable, and can meet 12.5L/min (100L/hour) (1±0.625L/min; test method: the main water flow center separation nozzle 2.5m diameter 40mm Round, the spray surface time of the test piece shell surface is about 1 min per square meter, the test specimen is at least 3 min, and the nozzle distance from the specimen shell surface should be 2.5 ~ 3 m;
IPX6: The orifice diameter is 12.5mm, the water spray volume is adjustable, and it can meet 100L/min (6000L/hour) ±5L/min. Test method: the circle with a diameter of 120mm at 2.5m of the main nozzle of the main flow center, test piece The water spray time per square meter of the outer shell surface is about 1 min, the test time is at least 3 min, and the distance between the nozzle and the surface of the test piece shell should be 2.5~3 m;
Five, note:
1. Please use non-impurity water (such as distilled water, deionized water, etc.) to prevent the water pump from being damaged or blocking the spray hole.
2. Keep the sample clean during the test;
3. If the test is not carried out for a long time, the test water in the water tank should be drained to keep the test box clean;
4, the sample power supply must be in accordance with the "four-1" provisions, if there are other special specifications of the power supply, such as the order is not stated, the user must solve the problem.
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