High temperature box GB/T13543-1992 standard high temperature working test program
High Temperature Test Procedure - High Temperature Test Chamber according to GB/T 13543-1992 Standard Preparation: Place the test sample in a normal atmospheric condition for testing until it reaches thermal equilibrium. This ensures that the sample is not affected by any prior environmental conditions before testing begins. Initial Testing: Before exposing the sample to any environmental stress, conduct initial performance evaluations including electrical, mechanical, and visual inspections under standard test conditions. All results should be carefully documented for future reference and comparison. Test Execution: The sample is placed into the high-temperature chamber as specified. The chamber is then cooled down to the lowest operational ambient temperature of the device, and maintained at that temperature until stability is achieved. Once stable, the device is operated under these conditions for the duration outlined in the product standard or technical documentation. An intermediate test may also be conducted during this phase, following the specific requirements outlined in the relevant standards. Recovery Phase: After the test period, the sample is turned off and gradually returned to normal test atmospheric conditions. The rate of temperature change should not exceed 10°C per minute to prevent thermal shock. The sample is left in the chamber until it reaches thermal stability again. Final Testing: Once the recovery phase is complete, the sample undergoes final electrical, mechanical, and visual inspections as specified in the product standard or technical documents. These results are compared with the initial test data to assess any changes or degradation caused by the high-temperature exposure. This procedure outlines the high-temperature working test program as defined in the GB/T 13543-1992 standard for high-temperature test chambers. It provides a structured approach to evaluate the performance and reliability of devices under elevated temperature conditions, ensuring compliance with industry requirements and safety standards.
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