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Surge-Trap: North America vs. Europe
In this global business environment, it is common for manufacturers in North America to ship equipment to Europe. North America and Europe each have their own standards for Surge Protective Devices (SPD's) which makes understanding the differences in electrical system terminology very important. In North America, all SPD products are associated with UL 1449 3rd edition whereas in Europe, IEC 61643-1 is used to provide standards. Recently 1449 3rd edition adopted new terminology and testing criteria to be more congruent with IEC 61643-1. However, system voltages and the how they are defined differ between the two standards.
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