Sunshinelux is a professional wholesale led light supplier and manufacturer in China since 2012.
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Sunshinelux is a professional wholesale led light supplier and manufacturer in China since 2012.
The high and low temperature box has a wide temperature control range, and its performance indicators all meet the technical conditions of the national standard GB/T10592 high and low temperature test box, which is suitable for environmental testing of electrical and electronic products according to GB/T2423. , Test B: High temperature test method "Carry out low temperature and high temperature tests on the product. Suitable for high and low temperatures of electrical and electronic products (including components, equipment and other products).
High and low temperature testing is a method used to determine the adaptability of products for storage, transportation and use under high temperature and climatic conditions. The severity of the test depends on the temperature and duration of exposure to the elevated temperature.
High and low temperature testing standard:
High temperature test in detail: This test is used to determine the adaptability of the product for storage, transportation and use under high temperature climate conditions. The severity of the test depends on the temperature and duration of exposure to the elevated temperature.
Reference test standards: GB/T 2423.2, IEC 60068-2-2, IEIA 364, MIL-STD-810F, etc.
Low temperature test introduction: This test is used to determine the adaptability of the product for storage, transportation and use under low temperature climate conditions. The severity of the test depends on the temperature and duration of exposure to the cryogenics.
Reference test standards: GB/T 2423.1, IEC 60068-2-1, EIA 364, MIL-STD-810F, etc.
Alternating damp heat test: high and low temperature alternating damp heat test is an essential test item in the fields of aviation, automobiles, home appliances, scientific research, etc. The parameters and performance after the temperature environment of the constant test is changed.
Test reference standards: GB/T 2423.1, GB/T 2423.2, GB/T 2423.3, GB/T 2423.4.
Introduction to temperature shock test: This test is to determine the adaptability of the product for storage, transportation and use in a climate environment where the temperature changes rapidly. The severity of the test depends on high/low temperature, dwell time, number of cycles.
Reference test standards: IEC60068-2-14, GB2423.22, GJB150.5, etc.
Introduction to the rapid temperature change test: This test is used to determine the adaptability of the product for storage, transportation and use in a climate environment with rapid or slow changes in high temperature and low temperature. The test process is a cycle of normal temperature → low temperature → low temperature dwell → high temperature → high temperature dwell → normal temperature. The severity of the temperature cycle test is determined by the high/low temperature range, dwell time and number of cycles.
High and low temperature test conditions:
1. High temperature test: Uncharged storage: 70°C, keep for 48 hours, recover for 2 hours, test whether the equipment is working normally; live work: 55°C, keep working, observe whether the equipment is working normally; standard: GJB 150.3 A-2009, GBT2423.2, etc. 2. Low temperature test: Uncharged storage: -40°C, keep for 24 hours, recover for 2 hours. Test whether the equipment is working normally; live work: -20°C, keep working, observe whether the equipment is working normally; reference standards: GJB 150.4A-2009, GBT2423.1, etc.
3. Damp heat test:
This test should be carried out according to GB/T2423.4 test Db. Except for performance testing, the device under test shall not be energized.
Temperature: +55°C and +25°C; Number of cycles: 2 (breathing effect); Time: 2×24h.
High and low temperature test method:
first adjust the temperature of the box to 25°C±3°C, and maintain this value, adjust the relative humidity to 45%~75%, and perform 2h~6h stable temperature treatment. In the last 1 hour, increase the relative humidity in the box to not less than 95%, and keep the temperature at 25°C±3°C.
After the stable stage, the cycle starts, so that the temperature of the box rises continuously from 25°C±3°C to 55°C±2°C within 2.5h to 3h. It should not be lower than 95%, so that condensation occurs on the surface of the test sample, but excessive condensation should not occur on large test samples.
Then keep it in a high-temperature and high-humidity environment with a temperature of 55°C±2°C until 12h±0.5h from the start of the cycle. The relative humidity at this stage should be (93±3)% except that it should not be lower than 90% in the first and last 15 minutes.
Then within 3h~6h, lower the temperature of the box from 55°C±2°C to 25°C±3°C. The cooling rate for the first 1.5 hours is 10°C/h, and the relative humidity during this period is not lower than 90% in the first 15 minutes, and not lower than 95% at other times.
After cooling down, the temperature is kept at 25°C±3°C, and the relative humidity is not lower than 95%, and 24 hours from the beginning of the cycle is a cycle.
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