Views: 38 Author: Site Editor Publish Time: 2016-08-31 Origin: Site
With gradual improvement of LED testing standards, The transportation safety testing of flood light is also a very important indicator. To protect flood lights’ safety in transportation environment, our company has introduced a simulated transport vibration table for testing the actual transport security.
ISTA standard （US transport association standard） ASTM standard （US material association standard ) two standard to simulate the transport vibration equipment requirements :
The amplitude of 25.4 mm (1 inch, fixed), frequency of 1.5-5 hz (or 100-300 RPM adjustable), the experimental basis for: T = 14200 / CPM (based on the total vibration frequency of 14200 times), test speed option:
ISTA/ASTM standard test method :
| test speed(CPM) | corresponding frequency(Hz) | test time(M) |
| 150 | 2.5 | 95 |
| 180 | 3.0 | 79 |
| 210 | 3.5 | 66 |
| 240 | 4.0 | 60 |
| 270 | 4.5 | 53 |
| 300 | 5.0 | 48 |