Basler Electric DGC-2020HD - Manual (Page 156)

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Hysteresis
The hysteresis setting functions as a power dropout by preventing rapid switching of the pickup output.
Low-Line Scale Factor
A low-line scale factor setting is used to automatically adjust the power pickup setting in applications that
might utilize more than one type of genset connection. The scale factor setting is implemented when the
DGC-2020HD is determined to be in a low-line configuration. If the Low-Line Override function is
assigned to a contact input via the Programmable Functions screen, the state of the contact input and the
detected configuration are ORed. This means, if one or both are true, then the system is determined to be
configured for low-line. The value of the scale factor setting serves as a multiplier for the pickup setting.
For example, if a scale factor contact input is received by the DGC-2020HD and the scale factor setting is
2.000, the pickup setting will be doubled (2.000 x PU).
Alarm Configuration
An over/under power annunciation can be user-selected to trigger a pre-alarm (warning) or alarm
(shutdown). An over/under power annunciation can also be user-configured to close a programmable
output.
Element status is available in BESTlogicPlus programmable logic when “Status Only” is selected.
Logic Connections
Power element logic connections are made on the BESTlogicPlus screen in BESTCOMSPlus. The power
element logic block is illustrated in Figure 82. When the Block input is true, the 32 element is disabled.
The Trip output is true when the 32 element is in a trip condition.
Figure 82. Power Element Logic Block
Operational Settings
Power element operational settings are configured on the Power settings screen (Figure 83) in
BESTCOMSPlus. Setting ranges are defined in the Specifications chapter.
Generator Protection DGC-2020HD