Toshiba GR200 Series Instruction Manual

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6F2S1915 (0.46)GRZ200 (Soft 031 & 032)- 302 -Table 2.20-2 Level Detector Settings1A rating 5A ratingDetector Operating (A) Resetting (A) Operating (A) Resetting (A)LD1 0.10 0.08 0.50 0.40LD2 0.16 0.13 0.80 0.65LD3 0.26 0.21 1.30 1.05LD4 0.41 0.33 2.05 1.65LD5 0.66 0.53 3.30 2.65LD6 1.05 0.84 5.25 4.20LD7 1.68 1.34 8.40 6.70As shown in Figure 2.20-4, the OCMFS element can operate when one or more detectorskeep operating for five seconds. The OCMFS operation will reset when all LD detectors arereset.(ii) Setting of OCMFThe OCMF function is used for tripping, but it can be used for the OST alone by scheme switch[OCMFS-EN]. When On-T is set, it operates for the trip function, whereas it will operate forthe OST alone if On-S is set for the [OCMSF-EN]. Off has to be set for the [OCMSF-EN], if theoperation of the OCMF function should be disabled.2.20.5 Under-voltage element for phase-to-earth (UVFS)Its element can measure a voltage of phase-to-earth. Its sensitivity is determined with setting[UVFS]. Its operation is initiated if a phase-to-earth voltage are below the setting. On has tobe set for the scheme switch [UVFS-EN] for its operation and setting.2.20.6 Under-voltage element for phase-to-phase (UVSFS)Its element operates if a voltage of phase-to-phase is below setting [UVSFS]. On has to be setfor the scheme switch [UVSFS-EN] for its operation and setting.2.20.7 Under-voltage change detection element (DUVFS)Its element operates if a voltage is below setting [DUVFS]. Its operation is decided by thecomparison between a present voltage and a previous (i.e., 1 cycle before) voltage. Itssensitivity is determined by the setting [DUVFS], and its off-delay timer is provided by thesetting [TDUVFS].