Hello Group,
I just received a brand new, shiny copy of EN 61000-6-2. The voltage dip /
interruption requirements are not clear to me. Table 4 quantifies dip and
interruption levels as "% reduction." So, when they say a "30% reduction,"
I assume they mean that the voltage is reduced to 70% of its nominal value,
e.g. 120 Vac is reduced to 84 Vac. This is well and good, but it seems
illogical to me that the duration of the dip should increase with its
severity. For instance, while they specify a 30% reduction for one-half
cycle, they specify a 60% reduction for 50 cycles and a 95% reduction for
250 cycles! Say it isn't so! I'm clinging to a desperate hope that they
don't mean "x," but rather "1-x."
Regards,
Jeff Jenkins
Advanced Energy Industries, Inc.
Fort Collins, CO USA
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