Basler Electric DGC-2020HD - Manual (Page 139)

9469300990 Rev B 129
Figure 68. Settings Explorer, Generator Protection, Voltage, Undervoltage
Overvoltage (59)
Six overvoltage protection (59) elements monitor the sensing voltage applied to the DGC-2020HD. An
element can be configured to protect against overvoltage when the phase voltage increases above a
defined level.
The six, identical overvoltage protection elements are designated 59-1, 59-2, 59-3, 59-4, 59-5, and 59-6.
Element logic connections are made on the BESTlogic
™Plus screen in BESTCOMSPlus® and element
operational settings are configured on the Overvoltage settings screen in BESTCOMSPlus.
BESTCOMSPlus Navigation Path: Settings Explorer, Generator Protection, Voltage, Overvoltage (59)
Front Panel Navigation Path: Settings Explorer > Protection > Settings Group x (where x = 0 to 3) >
Voltage Protection > Overvoltage (59P)
Element Operation
Overvoltage protection can be used to prevent equipment damage when an overvoltage condition exists.
Two sets of overvoltage settings are provided for each element: one for three-phase generator
connections and one for single-phase generator connections. The Pickup setting entered is based on the
PT secondary side (DGC-2020HD). When a single-phase override contact input is received, the DGC-
2020HD automatically switches from the three-phase overvoltage settings to the single-phase overvoltage
settings.
Source
The Source setting configures an overvoltage element to monitor the generator sensing input terminals or
the bus sensing input terminals.
DGC-2020HD Generator Protection