GE Industrial Solutions Entellisys System User Manual - Manual (Page 81)

Synch Check relay 81
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5.3.2.4 Source 2
Dead Bus Threshold: Adjust the threshold below which a phase is considered dead from 5 to
50% of the nominal voltage (line-neutral for wyes, line-line for deltas) in steps of 1% from the
Dead Bus Threshold drop-down menu in the Source 2 menu group.
Live Bus Threshold: Adjust the threshold above which a phase is considered live from 50% to
100% of the nominal voltage (i.e., the PT rating, line-neutral for wyes, line-line for deltas) in steps
of 1% from the Live Bus Threshold drop-down menu in the Source 2menu group.
5.3.2.5 Configuration
Select the condition under which the “Dead Source” status output is true from the following
options in the Configuration drop-down menu:
• None – Dead source function is disabled
• LV1 and DV2 – Voltage source 1 live and voltage source 2 dead
• DV1 and LV2 – Voltage source 1 dead and voltage source 2 live
• DV1 or DV2 – Voltage source 1 dead or voltage source 2 dead
• DV1 xor DV2 – One voltage source is dead, the other is live
• DV1 and DV2 – Both sources are dead
NOTE: A source is considered dead when all voltage phases are below the dead bus threshold.
A source is considered live when all voltage phases are above the live bus threshold.