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Constant temperature and humidity box | high and low temperature box power requirements and line connection steps
Constant temperature and humidity test chambers, also known as environmental testing chambers or climate chambers, are essential tools used to evaluate the performance of materials and products under controlled temperature and humidity conditions. These devices simulate a wide range of environmental stresses, such as heat, cold, dryness, and moisture, to ensure that products can withstand real-world conditions. They are widely used in industries like electronics, automotive, aerospace, medical, chemicals, and more for quality assurance and reliability testing.
The equipment meets various national and international standards, including GB/T 5170.5-2008, GB/T 10586-2006, GB/T 2423.1-2008 (Test A), GB/T 2423.2-2008 (Test B), GB/T 2423.3-2006 (Test Ca), and GB/T 2423.4-2008 (Test Db). These standards help ensure that tests are conducted consistently and accurately across different applications.
This type of test chamber is ideal for testing electronic components, automotive parts, aerospace materials, plastics, metals, and Other industrial products under fluctuating temperature and humidity conditions. It helps identify potential weaknesses or failures that may occur during actual use.
Before installation, it's crucial to check the power supply specifications. The equipment requires a three-phase five-wire AC power supply with a voltage of 380V ±10% and a frequency of 50Hz ±0.5%. Proper wiring is essential to ensure safe and efficient operation.
Here are the key steps for connecting the power:
1. Confirm the diameter and capacity of the external power supply to ensure it meets the equipment’s requirements.
2. Use a multimeter to verify that the power supply voltage is within the acceptable range (±10%). The phase-to-phase voltage should be 380V, and the phase-to-neutral voltage should be 220V. Turn off the main switch after confirmation.
3. Connect the machine’s neutral line (blue N-line) to the corresponding terminal in the distribution box. Ensure the neutral line is correctly connected, as an incorrect connection can prevent the device from working or damage internal components.
4. Connect the grounding wire of the machine to the ground terminal in the distribution box.
5. Connect the three-phase lines (R, S, T) of the machine to the lower terminals of the main switch in the distribution box and tighten the Screws securely.
Note: The constant temperature and humidity test chamber is equipped with a phase sequence protection feature. If the phase sequence is incorrectly connected, the device will not power on. In such cases, you can swap the positions of any two of the three phase lines to correct the sequence and ensure proper operation.
Proper installation and wiring are critical for the safe and accurate functioning of the test chamber. If you're unsure about the process, it's always recommended to consult with a qualified technician.