Constant temperature and humidity box | high and low temperature box power requirements and line connection steps

Constant temperature and humidity test box is also called constant temperature and humidity tester, constant temperature and humidity test box, constant temperature machine or constant temperature and humidity box. It is used to test the performance of materials in various environments and to test various materials. It is heat-resistant, cold-resistant and resistant. Dry, moisture resistance. For electronics, electrical appliances, communications, instruments, vehicles, plastic products, metals, food, chemicals, building materials, medical, aerospace and other products used for testing quality. Meet the standards: GB/T5170.5-2008, GB/T10586-2006, GB/T2423.1-2008 Test A, GB/T2423.2-2008 Test B, GB/T2423.3-2006 Test Ca, GB/T2423 .4-2008 Test Db.

The constant temperature and humidity test chamber is suitable for inspecting parts and materials of electronic products, automobiles, aerospace, rubber, plastics, metals, marine weapons, universities, research institutes and other related products in the presence of high and low temperature changes. Various performance indicators. The power supply voltage of this product must meet AC380V±10%50±0.5Hz three-phase five-wire system; how to connect the test box power? The following technicians from Beijing Hongda Tianmo Test Equipment Co., Ltd. summarized the following wiring steps. Welcome to read.

1. Before connecting the constant temperature and humidity test box, it is necessary to confirm the diameter of the external power supply: whether the capacity of the main switch meets the requirements of the equipment.

2, using a multimeter to confirm the power supply voltage is normal (permissible deviation ± 10%), the voltage between the phase line is 380V, between the phase line and the zero line is 220V, no problem, turn off the main switch;

3, the machine's zero line (blue N-line) received a neutral terminal in the distribution box, (zero line must be right, otherwise the device can not work or burn electrical components);

4. Connect the ground wire of the machine to the ground terminal of the distribution box;

5, the three phases of the RST of the machine are respectively connected to the three terminals at the lower end of the main switch of the distribution box, and the screws are tightened;

Note: When the constant temperature and humidity test box is designed, there is a phase sequence protection function. If the phase sequence is connected wrongly, the meter will not be powered when the power is turned on. The three phase lines at the lower end of the switch box of the distribution box need to be exchanged, and the positions of the two lines are arbitrarily changed. The phase sequence can be changed to meet the requirements of the test chamber.

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Mining Chemicals

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