The test method for evaluating the safety protection performance of a high and low temperature low pressure test chamber is outlined below:
1. Electrical insulation and protective grounding terminal testing must be conducted before and after the 6.3 test as specified in the GBT10590-2006 standard. All tests should meet the required standards.
2. Safety protection device testing procedure:
1. Within the adjustable temperature range of the high and low temperature low pressure test chamber, select three temperatures from the following options: high temperatures such as 30°C, 40°C, 55°C, 70°C, 85°C, 100°C, 125°C, 155°C, and 175°C; and low temperatures such as 5°C, -5°C, -25°C, -30°C, -40°C, -55°C, and -65°C. These selected temperatures will serve as the test conditions.
2. Set the over-temperature protection and alarm temperature to the selected test temperature. Then, either cool down or warm up the chamber until the temperature at the geometric center of the working space reaches the set value. At this point, the over-temperature protection device should activate (stopping cooling or heating) and simultaneously trigger an alarm signal that complies with the requirements stated in section 5.3.3 of the GBT10590-2006 standard. This test should be repeated three times consecutively to ensure consistency and reliability.
3. Evaluation of test results: During the test, if the alarm and protection system activates every time the set temperature is reached, it indicates that the system meets the required safety standards.
This comprehensive testing process ensures that the safety mechanisms of the test chamber are fully functional under a wide range of environmental conditions, providing reliable protection for both equipment and personnel. It's essential to follow these procedures meticulously to guarantee accurate and repeatable results.
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