1. High temperature work
Reference standard: GB / t2423.2-2001
Instruments / tools used: constant temperature and humidity test chamber
Test conditions and methods: put the qualified test sample into the environment with the temperature of 40 ° C for normal operation for 2 hours, and then test the performance of the test sample after 2 hours
Judgment criteria: the appearance, structure and electrical performance of the measured samples before and after the test shall meet the standard requirements. The product function must be normal during the test, and the safety test must pass after the test
2. Low temperature operation
Reference standard: GB / t2423.1 – 2001
Instruments / tools used: constant temperature and humidity test chamber
Test conditions and methods: put the qualified test sample into the environment with the temperature of – 10 ° C for normal operation for 2 hours, and then test the performance of the test sample after 2 hours
Judgment criteria: the appearance, structure and electrical performance of the measured samples before and after the test shall meet the standard requirements. The product function must be normal during the test, and the safety test must pass after the test
3. Constant damp heat operation
Reference standard: GB / t2423.3-2001
Instruments / tools used: constant temperature and humidity test chamber
Test conditions and methods: put the qualified test sample into the environment with temperature of 40 ° C and relative humidity of 93% for normal operation for 2 hours, and then test the performance of the test sample after 2 hours
Judgment criteria: the appearance, structure and electrical performance of the measured samples before and after the test shall meet the standard requirements. The product function must be normal during the test, and the safety test must pass after the test
4. High temperature storage
Reference standard: GB / t2423.2-2001
Instruments / tools used: constant temperature and humidity test chamber
Test conditions and methods: place the qualified test samples in the environment with the temperature of 550 “C for 16 hours, and then test the performance of the test samples after the test
5. Low temperature storage
Reference standard: GB / t2423.1-2001
Instruments / tools used: constant temperature and humidity test chamber
Test conditions and methods: store the qualified test samples at – 40 ° C for 16 hours, and then test the performance of the test samples after the test
Judgment criteria: the appearance, structure and electrical performance of the measured samples before and after the test shall meet the standard requirements, and the safety test must be passed after the test
6. Constant damp heat storage
Reference standard: GB / t2423.3-2001
Instruments / tools used: constant temperature and humidity test chamber
Test conditions and methods: store the qualified test samples in an environment with a temperature of 55 ° C and a relative humidity of 93% for 16 hours, and then test the performance of the test samples after the test
Judgment and accurate measurement: the appearance, structure and electrical performance of the measured samples before and after the test shall meet the standard requirements, and the safety test must be passed after the test
7. Temperature change test
Reference standard: GB / t2423.22-1987
Instruments / tools used: rapid temperature change test chamber
Test conditions and methods: put the qualified test sample into the rapid temperature change test box, first adjust the ambient temperature to – 10 ° C + 2 ° C, power on the test sample to work at low temperature for 3 hours, and then adjust the ambient temperature to 40 ° C
+At 2 ° C, let the test sample work at high temperature for 3 hours. Form a cycle, test 4 cycles according to this cycle, and conduct patrol inspection every hour during the test. Restore to normal temperature after the test, and test the appearance, structure and electrical properties of the product.
Judgment and accurate test: the product performance shall not be abnormal during the test, and the product function shall be inspected to meet the requirements before and after the test.
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