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PDUAC3U SERIES
OPERATING MANUAL
P O W E R I N G T E C H N O L O G Y
Manual No. pduac3u-3
pduac3u-man-rev3-0317.indd
6.0 DESCRIPTION OF OPERATION
6.1
Power Distribution Circuits.
Simplified schematic diagrams of the
distribution panels is shown in Figure 2. The inputs from each phase and
Neutral connect to a internal copper bus bars from which the circuit breakers
distribute power to the loads, either one phase and neutral for each circuit
(figure 2a) or two phases for each circuit (figure 2b) where neutral is not
distributed. This latter provides a 208VAC output.
(Option SP)
25A
L3
L2
L1
N
CB12
N
CB11
N
L2
L3
CB10
N
L1
CB9
L3
N
CB8
N
CB7
N
L1
L2
CB6
N
L3
CB5
L2
N
CB4
L1
N
CB3
L3
N
CB2
L2
N
CB1
25A
CB12
25A
CB11
25A
CB10
25A
CB9
25A
CB8
25A
CB7
25A
CB6
25A
CB5
CB4
25A
CB3
CB2
25A
CB1
PE
L1
L2
L3
N
GND
N
L1
L2
L3
N
L1
25A
Figure 2a. Block Diagram - 4-wire 3-phase to single phase L-N
(Option - SP)
L3
L2
L1
N
CB12
L3
CB11
L1
L3
L2
CB10
L2
L1
CB9
L2
L3
CB8
L1
CB7
L2
L1
L3
CB6
L3
L2
CB5
L3
L1
CB4
L1
L2
CB3
L2
L3
CB2
L3
L1
CB1
25A
CB12
25A
CB11
25A
CB10
25A
CB9
25A
CB8
25A
CB7
25A
CB6
25A
CB5
25A
CB4
25A
CB3
25A
CB2
25A
CB1
PE
L1
L2
L3
N
GND
N
L1
L2
L3
L2
L1
Figure 2b. Block Diagram - 3-wire 3-phase to two phase L-L (208V)
