Basler BE1-CDS220, Instruction Manual

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BE1-CDS220 BESTCOMS Software 14-11
Figure 14-13. Setting Group Selection Screen
Percentage Differential
Pull down the Screens menu and select Percentage Differential or click on the Percentage
Differential icon that is shown at the right margin of this paragraph. This screen has three folder
tabs and the first tab is 87 Phase.
87 Phase
The 87 Phase tab (Figure 14-14) brings up the screen that allows setting the 87 Tap. In the MANUAL
mode, Tap, CT amps can be set for Circuit 1 and Circuit 2, only, through a range of 2 to 20. By selecting
the box, "Select to Enter Data for Auto Tap Calculation," the MANUAL display changes to AUTO. In this
mode, the transformer MVA can be set in the range of .5 to 9,999 and kv, CT can be set in the range of
.01 to 1,000.
The Restrained Pickup can be set using the drop down menu. The 87 Phase can be adjusted from 0.10
times tap to 1.00 times tap using the Up/Down arrows. Restraint Slope % is, likewise, adjustable from 15
to 60% with 45% being the default. The 2
nd
Harmonic Restraint % lop can be set from 5 to 75 with 18.0
being the default. The 5
th
Harmonic Restraint % lop has the same range with 35.0 being the default.
Unrestrained Pickup is set using the drop down menu arrow next to the selection box. To the right,
Up/Down arrows are used to select any value between 1 times tap to 21 times tap with zero as the
default.