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Circuit Wiring Diagrams
Electrical Circuit and Wiring Information
B-3
Circuit Wiring Diagrams
The following circuit wiring diagrams show how the hot, ground, and/or neutral AC
signals should be connected to the system’s power input plug:
•
Figure B-3
illustrates a single-phase 120-volts AC circuit connection.
•
Figure B-4
illustrates a single-phase 240-volts AC circuit connection.
•
Figure B-5
illustrates a split-phase 120/240-volts AC circuit connection.
•
Figure B-6
illustrates a three-phase 208-volts AC, Y-, or
∆
-source circuit
connection, phase-to-neutral.
•
Figure B-7
illustrates a three-phase 208-volts AC, Y-, or
∆
-source circuit
connection, phase-to-phase.
•
Figure B-8
illustrates a three-phase 380V AC, Y-, or
∆
-source circuit connection,
phase-to-neutral.
In the diagrams in this appendix, the power inputs for Express5800/320Ma 3.2 GHz,
3.6 GHz, or Dual-Core system 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) hot input, and the Y input is connected to the N
(Neutral) input. However, for split-phase or three-phase applications, the X and Y
inputs are connected to L1, L2, or L3 (separate lines). Therefore, for split-phase or
three-phase applications, both X and Y can be electrically hot with respect to the
system base (earth reference ground).
Figure B-2
shows the physical locations of the
X and Y inputs on the system base.
Figure B-2. Power Input Labeling
Power input A or B (Face View)
X
G (PE)
Y
Summary of Contents for Express5800/320Ma
Page 1: ...NEC Solutions America Inc NR573 Express5800 320Ma Site Planning Guide...
Page 10: ...Preface x Express5800 320Ma Site Planning Guide...
Page 18: ...System Documentation 1 8 Express5800 320Ma Site Planning Guide...
Page 40: ...Connecting a System Directly to a UPS 5 6 Express5800 320Ma Site Planning Guide...
Page 50: ...Sample PDU Usage Calculation 7 6 Express5800 320Ma Site Planning Guide...
Page 77: ...Standards Compliance Standards Compliance C 3 VCCI Note BSMI Note...
Page 78: ...Standards Compliance C 4 Express5800 320Ma Site Planning Guide...