Basler DGC-2020ES - Generator Current Sensing; Generator Voltage Sensing; Bus Voltage Sensing

9469200994 Rev — 5
DGC-2020ES Terminals and Connectors
Generator Current Sensing
The DGC-2020ES has sensing inputs for A-phase, B-phase, and C-phase generator current. A DGC-
2020ES with a style number of 1xx has a 1 Aac nominal current sensing and a DGC-2020ES with a style
number of 5xx indicates 5 Aac nominal current sensing. Generator current sensing terminals are listed in
Table 3.
Table 3. Generator Current Sensing Terminals
Terminals
Description
37 (IA–)
A-phase current sensing input
38 (IA+)
35 (IB–)
B-phase current sensing input
36 (IB+)
33 (IC–)
C-phase current sensing input
34 (IC+)
Note
Unused current sensing inputs should be shorted to minimize noise
pickup.
Caution
Generator current sensing terminals 37 (IA–), 35 (IB–), and 33 (IC–)
must be terminated to ground for proper operation.
Generator Voltage Sensing
The DGC-2020ES accepts either line-to-line or line-to-neutral generator sensing voltage over the range of
12 to 576 volts, rms line-to-line. Generator voltage sensing terminals are listed in Table 4.
Table 4. Generator Voltage Sensing Terminals
Terminal
Description
40 (GEN VN)
Neutral generator voltage sensing input
41 (GEN VC)
C-phase generator voltage sensing input
43 (GEN VB)
B-phase generator voltage sensing input
45 (GEN VA)
A-phase generator voltage sensing input
Installation in an Ungrounded System Application
When the DGC-2020ES is controlling equipment that is part of an ungrounded system, it is recommended
that potential transformers be employed on the voltage sensing inputs to provide full isolation between the
DGC-2020ES and monitored voltage phases.
Bus Voltage Sensing
Sensing of bus voltage enables the DGC-2020ES to detect failures of the mains (utility). The DGC-
2020ES senses A-phase, B-phase, and C-phase bus voltage. Bus voltage sensing terminals are listed in
Table 5.