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Configuration BE1-11m
Figure 53-1. Motor Configuration Settings Screen
Sensing Transformers Settings
The BE1-11m requires information about the current and voltage transformers to provide metering, fault
reporting, and protective relaying.
Sensing transformer settings are configured on the Sensing Transformers settings screen in
BESTCOMSPlus. A summary of the settings appear at the end of this section.
BESTCOMSPlus Navigation Path: Settings Explorer, System Parameters, Sensing Transformers
HMI Navigation Path: Settings Explorer, System Parameters, Sensing Transformers
CT Setup
The BE1-11m requires setting information on the CT ratios. This setting is used by the metering and fault
reporting functions to display measured quantities in primary units.
Unbalanced Calculation Method
Unbalanced overcurrent protection is provided by the 50 and 51 elements. Two methods are available to
calculate unbalanced current.
Method 1 (I2/I1)
=
× MIN
where:
MIN =
or 1, whichever is less
Method 2 (Average)
=
MAXp I
or I
MINp, whichever is greater
I
× MIN
where:
MIN =
or 1, whichever is less
MAXp = maximum of all three phases
MINp = minimum of all three phases
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