Surge protective device for UL certification test standard: UL 1449
the corresponding test requirements added by the standard
As mentioned above, the application test in humid environment mainly uses constant temperature and humidity test. The test procedure to verify whether the varistor (MOV) /gas discharge tube (GDT) meets the wet environment application is summarized in this paper:
The test sample will first undergo an aging test under high temperature and high humidity conditions for 1000 hours, and then compare the pressure-sensitive voltage of the varistor or the breakdown voltage of the gas discharge tube to confirm whether the surge protection component can be in a long-term humid environment., Still maintain its original protection performance.
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