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  • Summary of Surge Location Categories Guidelines Per IEEE C62.41.2-2002

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    It is worth mentioning that actually a complete SPD range of category C, B and A according to ANSI/IEEE is based on the tests by a combined impulse (1,2/50; 8/20μs) with a generator’s internal resistance of 1 or 2 or 12Ω and partly by a test impulse at wave shape 0,5μs/100kHz (with the generator’s internal resistance of 12Ω for B and C categoryies, alternatively 30Ω for A category).

    The standard ANSI/IEEE also defines a test current impulse at wave shape 10/1000μs. It is however recommended to use it only as so-called „additional test“ performance. The test impulse at 10/350μs wave shape had been for the first time defined in VDE 0675 standard in 1986 and later on subsequently taken over by EN 61 643-11.

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