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Overcurrent Elements
Page 2 of 7
20120723
Step 1
In
AC
SEL
ERATOR
QuickSet, select
Group 1 > Set 1 > Winding 1 Elements
.
Figure 1 Phase Time-Overcurrent Element Settings
Step 2
Determine the
Winding 1 Max Phase Time Overcurrent Trip Level
setting.
51P1P = ________________
The transformer maximum expected load equals
MVA •1000
kV • 3
Set the 51P1 pickup to 150 percent of expected maximum load.
Step 3
Select
Group 1 > Set 1 > Neutral 2 Elements
.
Figure 2 Neutral Instantaneous Overcurrent Element Settings