Toshiba GR-200 Series Instruction Manual page 96

shall be zero when an energized current is smaller than the setting [SEF1], when
the small energized current is continued for timer setting [T SEF1R]. The
integrated value will not be zero when the energized current does not flow small
for the setting [T SEF1R]. DEF is allowed to set in the IEEE, US, and ORG. DEF is
set unconditionally in the IEC and UK (see Table 2.4-3).
Figure 2.4-4 Inverse-time-reset characteristics curves
Figure 2.4-5 illustrates that an integrating value will be influenced dependent on the
DEP or DEF setting. An energized quantity (I), where I is greater than a threshold setting
[SEF1], will make an integrating value, which can determine how the element operates. If the
energized quantity (I) falls below the threshold setting [SEF1], the element operation will
return to its reset stage after the time t(I) calculated in Equation (2.4-2).
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6F2T0200 (0.15)
GRE200 (1,2)