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DGC-2020HD Typical Applications
3 • Typical Applications
Typical connection diagrams are provided in this chapter as a guide when wiring the DGC-2020HD for
communication, mechanical senders, contact inputs and outputs, sensing, and control power.
Connections for Typical Applications
General connections for DGC-2020HD communication, contact inputs, contact outputs, mechanical
senders, and control power are shown in Figure 3-1.
General bus voltage sensing connections in three-phase wye, three-phase delta, single-phase A-B and
single-phase A-C configurations are shown in the figures listed below.
• Three-phase wye ........................................................................... Figure 3-2
• Three-phase delta.......................................................................... Figure 3-3
• Single-phase A-B ........................................................................... Figure 3-4
• Single-phase A-C........................................................................... Figure 3-5
Connections for pre-configured breaker control schemes are shown in the figures listed below.
• No breaker control ......................................................................... Figure 3-6
• Generator breaker control ............................................................. Figure 3-7
• Generator breaker control with optional mains breaker status ...... Figure 3-8
• Generator and mains breaker control ............................................ Figure 3-9
• Generator and mains breaker control with load bus sensing ........ Figure 3-10
• Generator and group breaker control ............................................ Figure 3-11
• Generator and group breaker control with load bus sensing ........ Figure 3-12
• Generator, group, and mains breaker control ............................... Figure 3-13
• Generator breaker control to segmented system .......................... Figure 3-14
• Generator and group breaker control to segmented system ......... Figure 3-15
• Generator and tie breaker control .................................................. Figure 3-16
• Tie breaker control ......................................................................... Figure 3-17
• Dual tie breaker control ................................................................. Figure 3-18
• Generator and two tie breaker control ........................................... Figure 3-19
Although three-phase wye sensing connections are shown in the breaker control diagrams, other bus
voltage sensing configurations (figures 3-2 through 3-5) may be used instead.
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