Unipower PDUAC3U-120-08 User manual

OPERATING MANUAL
PDUAC3U SERIES
AC POWER DISTRIBUTION UNITS
www.unipowerco.com
Manual No. PDUAC3U-3 © 2017 UNIPOWER LLC
All Rights Reserved
pduac3u-man-rev3-0317.indd
UNIPOWER LLC • 3900 Coral Ridge Drive, Coral Springs, Florida 33065, USA • [email protected]
North America: [phone] • LatinAmerica: [phone] • Europe: [phone]
POWERING TECHNOLOGY

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PDUAC3U SERIES
OPERATING MANUAL
POWERING TECHNOLOGY
Manual No. pduac3u-3 pduac3u-man-rev3-0317.indd
Contents
1.0 INTRODUCTION ..................................................................................................................4
2.0 FEATURES & OPTIONS.......................................................................................................5
3.0 PRODUCT LINE....................................................................................................................5
4.0 SAFETY & INDUSTRY STANDARDS................................................................................6
5.0 WARRANTY (summary) .......................................................................................................6
6.0 DESCRIPTION OF OPERATION.........................................................................................7
7.0 SPECIFICATIONS.................................................................................................................8
8.0 FRONT PANEL DESCRIPTION...........................................................................................8
9.0 BACK PANEL DESCRIPTION.............................................................................................9
10.0 UNPACKING AND INSPECTION......................................................................................10
11.0 INSTALLATION..................................................................................................................10
13.0 SETUPAND TESTING .......................................................................................................12
APPENDIX 1 - Extract from UL Test Report ...............................................................................13

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Manual No. pduac3u-3 pduac3u-man-rev3-0317.indd
FIGURES
Figure 1. PDUAC3U AC Power Distribution Unit.......................................................................4
Figure 2a. Block Diagram - Single Phase.......................................................................................7
Figure 2b. Block Diagram - Three Phase........................................................................................7
Figure 3. Front Panel View............................................................................................................8
Figure 4. Back Panel View............................................................................................................9
Figure 5. Output Barrier Strip Detail.............................................................................................9

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Manual No. pduac3u-3 pduac3u-man-rev3-0317.indd
OPERATING MANUAL
PDUAC3U SERIES DC POWER DISTRIBUTION PANELS
1.0 INTRODUCTION
UNIPOWER’s PDUAC3U Series AC power distribution units accept a 3-phase input and
provide single phase outputs that are distributed from the phases to ensure load babance on
the source. They provideAC distribution and overload protection for up to 12 load circuits
distributed through eld wireable terminal blocks.
There are 3 basic congurations operating from nominal 120VAC, 208VAC or 230VAC
outputs respectively. Each of these is available with either 4, 8 or 12 2-pole load circuit
breakers rated at 25A.
Model with and without input surge protection are available.
These panels are only 3RU high and are supplied with brackets that allow mounting in a
19” frame.
.
Figure 1. PDUAC3UAC Power Distribution Unit

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Manual No. pduac3u-3 pduac3u-man-rev3-0317.indd
2.0 FEATURES & OPTIONS
The following is a summary of the important features of the PDUAC3U Series.
Load Balancing on 3-Phase Source
3RU Rack Height
19” Rack-Mounting
 Mates with UNIPOWER rectier systems
Terminal Block Connections
| 3 Phase Input - Single Phase Output
 120VAC, 208VAC or 230VAC Output
Input Surge Protection (OPTION)
3.0 PRODUCT LINE
3.1 StandardCongurations
The following table lists the 18 available standard congurations of the PDUAC3U series.
MODEL NUMBER SURGE
PROTECTION NOMINAL AC INPUT
NOMINAL
AC
OUTPUT OUTPUTS1
PDUAC3U-120-04
NO
120/208VAC
3-phase
4 wire + GND
120VAC
Line-Neutral
4 x 25A
PDUAC3U-120-08 8 x 25A
PDUAC3U-120-12 12 x 25A
PDUAC3U-208-04 120/208VAC
3-phase
4 wire + GND
208VAC
Line-Line
4 x 25A
PDUAC3U-208-08 8 x 25A
PDUAC3U-208-12 12 x 25A
PDUAC3U-230-04 230/400VAC
3-phase
4 wire + GND
230VAC
Line-Neutral
4 x 25A
PDUAC3U-230-08 8 x 25A
PDUAC3U-230-12 12 x 25A
PDUAC3U-120-04-SP
YES
120/208VAC
3-phase
4 wire + GND
120VAC
Line-Neutral
4 x 25A
PDUAC3U-120-08-SP 8 x 25A
PDUAC3U-120-12-SP 12 x 25A
PDUAC3U-208-04-SP 120/208VAC
3-phase
4 wire + GND
208VAC
Line-Line
4 x 25A
PDUAC3U-208-08-SP 8 x 25A
PDUAC3U-208-12-SP 12 x 25A
PDUAC3U-230-04-SP 230/400VAC
3-phase
4 wire + GND
230VAC
Line-Neutral
4 x 25A
PDUAC3U-230-08-SP 8 x 25A
PDUAC3U-230-12-SP 12 x 25A
Notes:
1. Alternative ratings are available, consult factory.

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PDUAC3U SERIES
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POWERING TECHNOLOGY
Manual No. pduac3u-3 pduac3u-man-rev3-0317.indd
4.0 SAFETY & INDUSTRY STANDARDS
4.1 PDUAC3U Series power distribution panels meet the following safety
requirements:
STANDARD
UL60950-1, 2nd Edition
CSA22.2 No. 60950-1, 2nd Edition
EN60950-1, 2nd Edition
4.2 PDUAC3U Series power distribution units (PDU) are CE marked to indicate
conformance to the European Union’s Low Voltage Directive.
4.3 These PDUs operate at voltages that could potentially be hazardous.
Furthermore, inadvertent short circuiting by mis-connection or other error
could be harmful. This product should be handled, tested and installed only
by qualied technical persons who are trained in the use of power systems
and are well aware of the hazards involved.
4.4 All connections to the PDU should be carefully checked for errors before
applying power to them.
4.5 The internal voltages may be at hazardous potentials. The top cover should
not be removed. There are no user-serviceable components in these units.
Removing the top cover will void the warranty.
5.0 WARRANTY(summary)
PDUAC3U SeriesPDUs are warranted fortwo (2) yearsfrom date of shipmentagainst defects
in material and workmanship. This warranty does not extend to products which have been
opened, altered or repaired by persons other than persons authorized by the manufacturer or
to products which become defective due to acts of God, negligence or the failure of customer
to fully follow instructions with respect to installation, application or maintenance.
For a complete text of UNIPOWER’s warranty conditions please request a copy from your
local Sales Oce.

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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
(gure 2a) or two phases for each circuit (gure 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)

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Manual No. pduac3u-3 pduac3u-man-rev3-0317.indd
7.0 SPECIFICATIONS
The following specications are typical at 25°C unless otherwise noted.
INPUT/OUTPUT
Input Voltage............................3-phase, 120/208 or 230/400VAC
4 wire & GND
Input Current...............................................100A Max. per phase
Load Circuit Breakers
-04 ...............................................................................4 x 25A
-08 ...............................................................................8 x 25A
-12 .............................................................................12 x 25A
Output Voltage Range
-120 .......................................................................85-132VAC
-208 .....................................................................180-264VAC
-230 .....................................................................180-264VAC
Frequency........................................................................47-63Hz
REGULATORY
Safety Certications....................................................UL60950-1
CSA22.2 No. 60950-1 2nd Ed.
EN60950-1 2nd Ed.
Line Conducted Emissions................. FCC20780 pt.15J Curve A
EN55022 Class A
Fast Transient Immunity..........................................EN61000-4-4
Surge Immunity .......................................................EN61000-4-5
ENVIRONMENTAL
Operating Temp. Range .........................................-20°C to 50°C
Storage Temp. Range...........................................-40°C to +85°C
Humidity..........................................0% to 90%, Non-Condensing
PHYSICAL SPECIFICATIONS
Case Material/Finish............................ Steel/Black Powder Coat
Dimensions, Inches (mm) .........................5.1h x 16.75w x 11.5d
(43.2 x 425.5 x 292.1)
Rack Mounting................................................19” or 23”, 3U High
Weight ...................................................................23lbs (10.5Kg)
FIELD WIRING CONNECTIONS
Input (L1, L2, L3, N, GND).....Cable Compression, #2AWG max.
Output (L & LN) ..................................................No. 6-32 Screws
Output (Ground) .................................................No. 8-32 Screws
8.0 FRONT PANEL DESCRIPTION
Thefront panelof the PDUAC3U,shown inFigure 3below, consistsof twosections.
The left section contains the output circuit breakers; there are 4, 8 or 12 tted
depending on the exact model. They are each rated at 25Aas standard. The right
section accommodates an optional surge protection feature. When this option is
not tted blanking panels are installed.
LOAD DISTRIBUTION BREAKERS
(4, 8 or 12 x 25A)
INPUT
AC SURGE PROTECTION
(OPTION)
O/ OFF
25A
I/ ON
O/ OFF
25A
I/ ON
O/ OFF
25A
I/ ON
O/ OFF
25A
I/ ON
O/ OFF
25A
I/ ON
O/ OFF
25A
I/ ON
O/ OFF
25A
I/ ON
O/ OFF
25A
I/ ON
O/ OFF
25A
I/ ON
O/ OFF
25A
I/ ON
O/ OFF
25A
I/ ON
O/ OFF
25A
I/ ON
V20-CV20-CV20-C C25-B+C
N-PE
CB1 CB2 CB3 CB4 CB5 CB6 CB7 CB8 CB9 CB10 CB11 CB12
L1 L2 L3 NPE
SPD
Figure 3. Front Panel View

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9.0 BACK PANEL DESCRIPTION
9.1 Back View. Figure 4 shows the back of of the PDUAC3U. Inputs are at the left
hand end. The outputs are to the right of this and consist of three barrier strips with
associated ground screws. There are sucient connections for connecting to a total
of 3 rectier shelves, each with 4 separate AC inputs.
LOAD CONNECTIONS
(Banks 2 & 3)
AC INPUT
CONNECTIONS
LOAD CONNECTIONS
(Bank 1)
Figure 4. Back Panel View
9.2 Input Connections. The AC power inputs to the PDU are made through the ve
compression terminal blocks marked GND, N, L1, L2 & L3. The recommended
cable size for these connections is #2AWG.
9.3 Output Connections. Output connections are shown in Figure 4. There are 3 sets
of barrier strip terminals. The connections are numbered to correspond with the
numbers of the front panel breakers. Each barrier strip is intended for making output
connections to a single rectier shelf. Above the barrier strips are separate screws
which are used to make the ground connections.
Barrier strip connection use No. 6-32 screws. Recommended wire size is #10AWG.
Figure 5 below shows detailed spacing of the terminals.
0.375
(9.53)
0.65
(16.5)
0.32
(8.1)
Figure 5. Output Barrier Strip Detail
The ground connections use No. 8-32 screws. The recommended wire size for these
connections is #10AWG. Note that it is important to use separate wires for each
ground connection to the rectier shelf.

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OPERATING MANUAL
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Manual No. pduac3u-3 pduac3u-man-rev3-0317.indd
10.0 UNPACKING AND INSPECTION
10.1 This PDUAC3U Series PDU was carefully tested, inspected and packaged for
shipment from our factory. Upon receipt of the unit it should be carefully unpacked
and inspected for any damage in shipment.
10.2 If there is evidence of damage, do not attempt to test the unit. The freight carrier
should be notied immediately and a claim for the cost of the rectier system should
be led with the carrier for direct reimbursement. Be sure to include the model and
serial number of the damaged unit in all correspondence with the freight carrier.
Also save the shipping carton and packing material as evidence of damage for the
freight carrier’s inspection.
10.3 UNIPOWER will cooperate fully in case of any shipping damage investigation.
10.4 Always save the packing materials for later use in shipping the unit. Never ship the
unit without proper packing.
11.0 INSTALLATION
11.1 Mounting. This PDU can be mounted in 19-inch racks by using the supplied
brackets. Mount it from the front of the rack using the correct osets to align with
existing rack-mounted equipment.
11.2 Input Connections. Input connections should be made with stripped end wire of
size #2AWG. See Section 9.2.
Connections should be made according to the source voltage as follows:
120VAC Line-Neutral
Connect each phase to L1, L2 & L3 respectively. Connect neutral to N.
208VAC Line-Line
Connect each phase to L1, L2 & L3 respectively. Connect neutral to N.
230VAC Line-Neutral
Connect each phase to L1, L2 & L3 respectively. Connect neutral to N.
11.3 Output connections are made to barrier strip connectors and grounding screws. See
Section 9.3 and Figure 5.

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Manual No. pduac3u-3 pduac3u-man-rev3-0317.indd
Each output provides a single phase voltage of 120VAC, 208VAC or 230VAC
depending on the model. Models with 4 output breakers tted use CB1-4, those
with 8 breakers use CB1-8 and those with 12 breakers use CB1-12.
The internal wiring of the PDU ensures that the phases are distributed as evenly
across the outputs as possible. Make ALL connections to each rectier shelf from
a single barrier strip even if the system does not initially have a full compliment
of rectiers. This will ensure proper load balancing across the input phases and
also allow rectiers to be added at a later date without the need to install additional
cables.
11.4 Checking Connections. Carefully check the input connections to the PDU and
output connections to the load before operating the panel. In particular pay attention
to the input wiring as described in section 11.2. Incorrect connections will not harm
the PDU but may cause serious harm to the load. Check to make sure that the safety
ground connections is made. Make sure that all connections are clean and secure
to minimize contact resistance.
11.5 UL Requirements. The following should be adhered to when installing this PDU:
Elevated Operating Ambient - If installed in a closed or multi-unit rack assembly,
the operating ambient temperature of the rack environment may be greater than
room ambient. Therefore, consideration should be given to installing this PDU in
an environment compatible with the maximum specied ambient temperature.
ReducedAirFlow- Installation of this PDU in a rack should be such that the amount
of air ow required for safe operation of this PDU is not compromised.
Mechanical Loading - Mounting of this PDU in the rack should be such that a
hazardous condition is not achieved due to uneven mechanical loading.
Circuit Overloading - Consideration should be given to the connection of this
PDU to the supply circuit and the eect that overloading of the circuits might have
on overcurrent protection and supply wiring. Appropriate consideration of PDU
nameplate ratings should be used when addressing this concern.
Reliable Earthing - Reliable earthing of this rack-mounted PDU should be
maintained. Particular attention should be given to supply connections other than
direct connections to the branch circuit (e.g. use of power strips).”

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Manual No. pduac3u-3 pduac3u-man-rev3-0317.indd
This document is believed to be correct at time of publication and UNIPOWER LLC accepts no responsibility for
consequences from printing errors or inaccuracies. Specications are subject to change without notice.
13.0 SETUP AND TESTING
13.1 It is not necessary to have the PDU mounted in a rack for initial testing. This can
be done on a bench. It is also not necessary to have loads connected to the panel
for this testing.
13.2 With the input power source o, connect the input wires to the PDU. Set all circuit
breakers to on.
13.3 Turn on the input power source. Check the output voltage at each set of output
terminals with a digital voltmeter.
13.4 Switch o all circuit breakers and disconnect the AC source.
13.5 The PDU may now be connected to its intended application.
13.6 If the distribution panel did not operate properly in the above tests, go back and
double check the connections to make sure it is correct.
Please note that there are no user serviceable parts inside either the modules or the shelves
and that opening either will void the warranty. If you are unable to resolve any problem
call your nearest UNIPOWER sales oce for support:
US [phone] UK [phone]
[email protected]

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OPERATING MANUAL
POWERING TECHNOLOGY
Manual No. pduac3u-3 pduac3u-man-rev3-0317.indd
APPENDIX1-ExtractfromULTestReport
Standard: UL 60950-1, 2nd Edition, 2011-12-19 (Information Technology Equipment -
Safety - Part 1: General Requirements)
CSA C22.2 No. 60950-1-07, 2nd Edition, 2011-12 (Information Technology
Equipment - Safety - Part 1: General Requirements)
Certication Type: Component Recognition
CCN: NWGQ2, NWGQ8 (Information Technology Equipment Including Electrical
Business Equipment)
Product: AC Power Distribution Unit
Model: AC Power Distribution Unit: Models PDUAC3U-200, PDUAC3U-LOW,
PDUAC3U-HIGH and PDUAC3U-xxx-yy-SP
where ‘xxx’ represents the input single or three phase voltage, ‘yy’ represents
other options that do not aect safety.
Rating: PDUAC3U-230-yy-SP
230/400Vac, 100A per phase, 50-60Hz, 3ph, 4W+G;
Output: 200-240Vac, max. 20A per output (L-N, 4 outputs per phase)
PDUAC3U-120-yy-SP
120/208Vac, 100A per phase, 50-60Hz, 3ph, 4W+G;
Output: 100-130Vac, max. 20A per output (L-N, 4 outputs per phase)
PDUAC3U-208-yy-SP
120/208Vac, 100A per phase, 50-60Hz, 3ph, 4W+G;
Output: 200-240Vac, max. 20A per output (L-L, 4 outputs per phase)
Model PDUAC3U-200
200-240Vac, 40A, 50-60Hz, Single Phase
Output: 240Vac, 50-60Hz, CB1-4: 12A; CB5: 4A CB6: 8A;
120Vac, 50-60Hz, CB7: 4A GFI, CB8A, CB9, CB10: 4A
Output Total Max Amps: 32A (per leg)
Model PDUAC3U-HIGH
200-240Vac, 64A, 50-60Hz, Single Phase
Output: 240Vac, 50-60Hz, CB1-4: 12A; CB5: 4A; CB6: 8A;
120Vac, 50-60Hz, CB7: 4A GFI, CB9-10: 8A
Output Total Max Amps: 51.2A (per leg)
Model PDUAC3U-LOW
200-240Vac, 64A, 50-60Hz, Single Phase
Output: 240Vac, 50-60Hz, CB1-4: 12A; CB5: 4A;
120Vac, 50-60Hz, CB8A: 4A, CB9, CB10: 8A
Output Total Max Amps: 51.2A (per leg)