Basler Electric DGC-2020ES - Manual (Page 37)

9469200990 Rev C 29
Voltage and Current Sensing
The DGC-2020ES senses generator voltage, generator current, and bus voltage through dedicated,
isolated inputs.
Generator Voltage
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. Single-phase generator voltage is sensed across phases A and B.
Generator voltage sensing terminals are listed in Table 2.
Table 2. 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
Bus Voltage
Bus sensing over the range of 12 to 576 volts rms line-to-line is accepted by the DGC-2020ES. Sensing
of bus voltage enables the DGC-2020ES to detect failures of the mains (utility). Controllers with style
number xx2 measure bus voltage sensing to perform automatic mains failure transfers. Single-phase bus
voltage is sensed across phases A and B. Bus voltage sensing terminals are listed in Table 3.
Table 3. Bus Voltage Sensing Terminals
Terminal Description
46 (BUS VA) A-phase bus voltage sensing input
48 (BUS VB) B-phase bus voltage sensing input
50 (BUS VC) C-phase bus voltage sensing input
Generator Current
The DGC-2020ES has sensing inputs for A-phase, B-phase, and C-phase generator current. Depending
on the style number, a DGC-2020ES has a nominal sensing current rating of 1 Aac or 5 Aac. A style
number of 1xx indicates 1 Aac nominal current sensing and a style number of 5xx indicates 5 Aac
nominal current sensing. Generator current sensing terminals are listed in Table 4.
Table 4. Generator Current Sensing Terminals
Terminal Description
38 (IA+
)
A-phase generator current sensing input
37 (IA–)
36 (IB+)
B-phase generator current sensing input
35 (IB–)
34 (IC+)
C-phase generator current sensing input
33 (IC–)
DGC-2020ES Voltage and Current Sensing