The GB/T25119 standard for electronic devices on rolling stock mainly provides the basis for type testing or routine testing of equipment directly installed on a rolling stock or electronic equipment installed in other cabinets The testing items of GBT25119-2010 standard include:
Climate environment testing: low temperature test, high temperature test, alternating damp heat test, salt spray test, water tightness test, low temperature storage test, enhanced screening temperature cycling test Mechanical environmental testing: Long life vibration test, functional vibration test, mechanical impact test, enhanced screening vibration test, etc EMC electromagnetic compatibility: surge test, electrostatic discharge test, electrical fast transient pulse group test, radio frequency radiation immunity test, radio frequency radiation emission test, radio frequency conducted immunity test, conducted emission test, etc Performance tests: power outage test, power fluctuation test, power overvoltage test, voltage conversion test Insulation test: insulation resistance test, insulation withstand voltage test
Test duration:
The climate environment test takes approximately 6-8 working days The mechanical environment test takes approximately 3 working days EMC testing for electromagnetic compatibility takes approximately 2-4 working days Performance test within 1 working day The insulation test takes about 0.5 working days The high and low temperature environmental tests basically follow a temperature change rate of 1 ℃/min, and there is a pre-treatment process for alternating damp heat. After the damp heat, insulation resistance and insulation withstand voltage tests are immediately carried out The vibration impact test needs to confirm the three directions of the sample, horizontal, longitudinal, and vertical, as the vibration conditions in each direction are different
Electromagnetic compatibility EMC testing, electrostatic discharge, pulse burst, radiation immunity, and conduction immunity are basically carried out according to the industrial level three testing requirements. The testing frequency for radiation immunity and radiation emission is only required to achieve 1GHz 114 detection network Enhanced screening tests are generally not mandatory for this test and are determined based on user needs
Function of testing report:
1. Project bidding: Issue authoritative third-party CMA/CNAS qualification report
2. Online e-commerce platform entry: Quality inspection report recognized by major e-commerce platforms 3. Used as a sales report: issuing legally effective testing reports to make consumers more confident 4. Papers and research: Provide professional personalized testing needs 5. Judicial services: providing scientific, fair, and accurate testing data 6. Industrial problem diagnosis: Verify the troubleshooting and correction of industrial production problemsBaijian and testing process:
1. Telephone communication and confirmation of requirements
2. Recommend solutions and confirm quotations 3. Mail samples and arrange testing 4. Progress tracking and result feedback 5. Provide reports and after-sales service 6. If urgent or priority processing is requiredTesting and testing characteristics:
1. The testing industry is fully covered, meeting different testing needs
2. Fully cover the laboratory and allocate localized testing nearby3. Engineers provide one-on-one services to make testing more accurate
4. Free initial testing, with no testing fees charged
5. Self service order delivery for free on-site sampling
6. Short cycle, low cost, and attentive service 7. Possess authoritative qualifications such as CMA, CNAS, CAL, etc 8. The testing report is authoritative and effective, and is generally used in China