User manual 09/2009 - Schneider Electric

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User manual 09/2009 - Schneider Electric

Using Micrologic Trip UnitsMicrologic 6 LSIG: Protection Parameter Readout ScreensMode Description of Screens Unit Up/Down ArrowsIr: Long time protection pick-up value for the phases A The up arrow indicatesthe Ir parameter.The down arrows indicatethe 3 phases.Ir(IN): Long time protection pick-up value for the neutral(4-pole or 3-pole trip unit with ENCT option and activeneutral protection)AThe up arrow indicatesthe Ir parameter.The down arrow indicatesthe neutral.tr: Long time protection time delay value (at 6 Ir) s The up arrow indicatesthe tr parameter.Isd: Short time protection pick-up value for the phases A The up arrow indicatesthe Isd parameter.The down arrows indicatethe 3 phases.Isd(IN): short time protection pick-up value for the neutral(4-pole or 3-pole trip unit with ENCT option and activeneutral protection)tsd: Short time protection time delay valueThe time delay is associated with the I 2 t inverse timecurve protection function:• ON: I 2 t function active• OFF: I 2 t function not activeIi: Instantaneous protection pick-up value for the phasesand the neutral (4-pole or 3-pole trip unit with ENCToption and active neutral protection).AsAThe up arrow indicatesthe Isd parameter.The down arrow indicatesthe neutral.The up arrow indicatesthe tsd parameter.The up arrow indicatesthe Ii parameter.The down arrows indicatethe 3 phases.Ig: Ground fault protection pick-up value A The up arrow indicatesthe Ig parameter.The down arrows indicatethe 3 phases.tg: Ground fault protection time delay valueThe time delay is associated with the I 2 t inverse timecurve protection function:• ON: I 2 t function active• OFF: I 2 t function not activeNeutral declaration (3-pole trip unit with ENCT option):• N: Neutral protection active• noN: Neutral protection not actives— —The up arrow indicatesthe tg parameter.LV434104 09/2009 31

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