| for a three-position element without differential gap the range between the two switching values and for a three-position element with differential gaps the range between the two pairs of switching values according to special agreement SEE: Figure 20. Note 1 to entry: For a three-position element with differential gaps the neutral zone is normally defined as the difference between the mean values of the two pairs of switching values. Note 2 to entry: This entry was numbered 351-28-37 in IEC 60050-351:2006.
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