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20 июля
26725 Топик полностью
Алексей Мусин (20.04.2005 15:06, просмотров: 1) ответил Shura на UL - это пожарная безопасность, VDE - электробезопасность
Похоже, что все-таки не так http://www.sensorsmag.com/articles/0299/0299_da/safe0299.shtml
UL1577 tests only the isolation barrier of the device. The standard covers products in applications where the supply voltage does not exceed 600 V (DC or rms). UL uses the Dielectric Voltage Withstand Test whereby sample lots are subjected to various types of preconditioning, followed by application of a test voltage for 60 s. The voltage amplitude is equal to the rated dielectric insulation of the device, and is sinusoidal with a frequency of 48-60 Hz. No breakdown of the dielectric material may occur during the tests. In addition, a thermal aging test of the encapsulant and/or internal PCB may be required if their temperature ratings are exceeded. А VDE тестирует на surge.