Basler Electric BE1-11m - Manual (Page 298)

286 9424200996 Rev L
Setting Range Increment Unit Default
Nominal Aux
Voltage
50 to 300 0.01 volts 69.3
Power Polarity Normal or Reverse n/a n/a Normal
Phase Rotation ABC or ACB n/a n/a ABC
Full Load Amps
1 to 25 (%A CTs)
0.2 to 5 (1A CTs)
0.001 amps 1
Service Factor 1 to 1.4 0.01 units 1
Motor Start
Detection Current Only, Current and Contacts, or
Contacts Only
n/a n/a
Current
Only
Motor Stop
Detection Current Only, Current and Contacts, or
Contacts Only
n/a n/a
Current
Only
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)
𝐼
𝑈𝑛𝑏𝑎𝑙𝑎𝑛𝑐𝑒
=
𝐼
2
𝐼
1
× MIN
where:
MIN =
𝐼
𝐴𝑣𝑒𝑟𝑎𝑔𝑒
𝐼
𝑅𝑎𝑡𝑒𝑑
or 1, whichever is less
Method 2 (Average)
𝐼
𝑈𝑛𝑏𝑎𝑙𝑎𝑛𝑐𝑒
=
�MAXp − I
𝐴𝑣𝑒𝑟𝑎𝑔𝑒
� or �I
𝐴𝑣𝑒𝑟𝑎𝑔𝑒
− MINp�, whichever is greater
I
𝐴𝑣𝑒𝑟𝑎𝑔𝑒
× MIN
where:
MIN =
𝐼
𝐴𝑣𝑒𝑟𝑎𝑔𝑒
𝐼
𝑅𝑎𝑡𝑒𝑑
or 1, whichever is less
MAXp = maximum of all three phases
MINp = minimum of all three phases
Configuration BE1-11m