Toshiba GR-200-5 Instruction Manual

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6F2T0207 (0.01)GRE200 (5,6)- 96 -Table 2.5-2 Constants for inverse-time-reset characteristicsCurve TypeIEC 60255-151 Curve Description kr(sec)βA IEC Normal Inverse (IEC-NI‡) N/A N/AB IEC Very Inverse (IEC-VI‡) N/A N/AC IEC Extremely Inverse (IEC-EI‡) N/A N/A- UK Long Time Inverse (UK-LTI‡) N/A N/AD IEEE Moderately Inverse (IEEE-MI) 4.85 2E IEEE Very Inverse (IEEE-VI) 21.6 2F IEEE Extremely Inverse (IEEE-EI) 29.1 2- US CO8 inverse (US-CO8) 5.95 2- US CO2 short time inverse (US-CO2) 2.261 2†Note: To select the inverse-time-reset characteristic, set [OCN1-Rtimer]=DEP.Conversely set [OCN1-Rtimer]=DEF to select definite-time-reset characteristic.Note: For the setting [OCN1-Rtimer]=DEP (inverse-time-reset), the integrated value willbe reduced in accordance to the magnitude of an energized current, when theenergized current is smaller than the setting [OCN1]. The reducing degree will bedetermined with the reset curve characteristics defined in the standards.Note: For the setting [OCN1-Rtimer]=DEF (definite-time-reset), the integrated valueshall be zero when an energized current is smaller than the setting [OCN1], whenthe small energized current is continued for timer setting [TOCN1R]. Theintegrated value will not be zero when the energized current does not flow smallfor the setting [TOCN1R]. DEF is allowed to set in the IEEE, US, and ORG. DEF isset unconditionally in the IEC and UK (see Table 2.5-3).Figure 2.5-4 Inverse-time-reset characteristics curvesFigure 2.5-5 illustrates that an integrating value will be influenced dependent on theDEP or DEF setting. An energized quantity (I), where I is greater than a threshold setting[OCN1], will make an integrating value, which can determine how the element operates. If the