Stratus ftServer 2500, Site Planning Manual, Page: 90 / 106

Circuit Wiring Diagrams
B-2 Stratus ftServer 2500, 4400, and 6200 Systems: Site Planning Guide (R609)
As shown in Figure B-1 , a star ground is often used to obtain the same earth reference
ground. Each earth reference ground, such as the system base ground, is returned
separately to a common point where a zero-volt (0V) earth ground exists. The star
ground ensures that all equipment is at the same potential and that no noise or safety
problems associated with an unpredictable or uncharacterized grounding system will
occur.
Figure B-1. Star Ground Example
Circuit Wiring Diagrams
The following circuit wiring diagrams show how the hot, ground, and/or neutral AC
signals should be connected to the power input plug to the system and optional
components:

Figure B-3 illustrates a single-phase 120V AC circuit connection.

Figure B-4 illustrates a single-phase 240V AC circuit connection.

Figure B-5 illustrates a split-phase 120/240V AC circuit connection.

Figure B-6 illustrates a three-phase 208V AC, Y-, or

-source circuit connection,
phase-to-phase.

Figure B-7 illustrates a three-phase 380V AC, Y-, or

-source circuit connection,
phase-to-neutral.
In the following diagrams, the power inputs for ftServer 2500, 4400, and 6200 systems
are labeled X and Y, as shown in
Figure B-2 , to eliminate any ambiguities in the
nomenclature. For single-phase applications, the X input is connected to the L (Line)
1 To monitor
2 To ftServer system
3 Earth reference ground (0V)
2
1
3