Unipower DPP1U Series User manual

OPERATING MANUAL
DPP1U SERIES
DC POWER DISTRIBUTION PANELS
Document Number: DPP1U-MAN Rev. 7
UNIPOWER, LLC
65 Industrial Park Rd
Dunlap, TN 37327
Phone: [phone]
Toll Free: 1-800-440-3504
Web site: www.unipowerco.com
© 2022 UNIPOWER LLC
All Rights Reserved
POWERING TECHNOLOGY

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DPP1U SERIES
OPERATING MANUAL
POWERING TECHNOLOGY
Document Number: DPP1U-MAN Rev. 7 dpp1u-man-Rev7-0422.indd
Contents
1.0 INTRODUCTION ...............................................................................................................4
2.0 FEATURES..........................................................................................................................4
3.0 PRODUCT LINE.................................................................................................................5
4.0 SAFETY & INDUSTRY STANDARDS.............................................................................5
5.0 WARRANTY (summary) ....................................................................................................6
6.0 DESCRIPTION OF OPERATION......................................................................................6
7.0 SPECIFICATIONS..............................................................................................................7
8.0 FRONT PANEL DESCRIPTION........................................................................................8
9.0 BACK PANEL DESCRIPTION..........................................................................................8
10.0 UNPACKING AND INSPECTION...................................................................................10
11.0 INSTALLATION...............................................................................................................11
12.0 INSTALLING CIRCUIT BREAKERS .............................................................................12
13.0 SETUPAND TESTING ....................................................................................................13
REV DESCRIPTION CHK’d & APPR’d / DATE
7 PCO# 45949 CM / 05-02-22

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DPP1U SERIES
OPERATING MANUAL
POWERING TECHNOLOGY
Document Number: DPP1U-MAN Rev. 7 dpp1u-man-Rev7-0422.indd
FIGURES
Figure 1. DPP1U DC Power Distribution Panel..........................................................................4
Figure 2. Block Diagram..............................................................................................................6
Figure 3. Front Panel View ..........................................................................................................8
Figure 4. Back Panel View...........................................................................................................8
Figure 5. Input Bus Bar Detail.....................................................................................................8
Figure 6. Output Barrier Strip Detail ...........................................................................................9
Figure 7. Alarm Contact Detail....................................................................................................9
Figure 8. Series Connection of Multiple Panels.........................................................................11
Figure 9. Cover plate removal....................................................................................................12
Figure 10. Breaker or blank panel removal..................................................................................12

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DPP1U SERIES
OPERATING MANUAL
POWERING TECHNOLOGY
Document Number: DPP1U-MAN Rev. 7 dpp1u-man-Rev7-0422.indd
OPERATING MANUAL
DPP1U SERIES DC POWER DISTRIBUTION PANELS
1.0 INTRODUCTION
UNIPOWER’s DPP1U Series of circuit breaker panels provide distribution and overload protection
for 1 to 16 circuits with circuit breakers that can be eld installed/exchanged without the need for
any additional tools. The panels are only one mounting position (1.75 inches) high.
The panels provide up to 16 breakers single bus 150A or 8A+8B 150A+150A distribution and
alarm capabilities. The A and B sections of the dual-bus panel are fully isolated, can be separately
congured for positive or negative 12 or 24/48 volts. Breaker capacities range from 1 to 30 amperes.
Breaker alarm is indicated by a dual color LED (green/red) and Form C relay contacts for each bus
.
Figure 1. DPP1U DC Power Distribution Panel
2.0 FEATURES
2.1 The following is a summary of the important features of the DPP1U Series.
150A bus bar inputs
Single or Dual Feed
NO tools required to change breakers
Tapered entry for easy insertion
NO or NC alarm contacts
Alarm LEDs
Power Fail form-C alarm
19" & 23" universal mounting brackets
Rear panel safety cover standard

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DPP1U SERIES
OPERATING MANUAL
POWERING TECHNOLOGY
Document Number: DPP1U-MAN Rev. 7 dpp1u-man-Rev7-0422.indd
3.0 PRODUCT LINE
3.1 StandardCongurations
The following table lists the 8 available standard congurations of the DPP1U series.
MODEL
NUMBER VOLTAGE INPUT FEEDS
MAX. #
BREAKERS
AMPS
EACH
FEED
TOTAL
AMPS
DPP1U-A1-B1 -48 / -24V
2
8 A Side
&
8 B Side
150 300
DPP1U-A4-B4 +24V / +48V
DPP1U-A5-B5 -12V
DPP1U-A6-B6 +12V
Notes:
1. For single feed configurations add suffix -S to the above model
numbers. Single feed units have the input buses internally
connected together and the total amperage is limited to 150A.
2. All panels are shipped with 15 breaker position blanking plates.
3.2 Available Breakers
AMPS PART NUMBER AMPS PART NUMBER AMPS PART NUMBER
1 348-1436-0000 10 348-1436-0030 25 348-1436-0060
2.5 348-1436-0010 15 348-1436-0040 30 348-1436-0070
5 348-1436-0020 20 348-1436-0050 BLANK 348-1418-0000
Breakers need to be ordered individually and are shipped with each panel as separate items
for eld installation.
4.0 SAFETY & INDUSTRY STANDARDS
4.1 DPP1U 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 DPP1U Series power distribution panels are CE marked to indicate conformance to the
European Union’s Low Voltage Directive.
4.3 These Distribution Panels operate at voltages that could potentially be hazardous.
Furthermore, inadvertent short circuiting of the system battery and/or rectier 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.

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DPP1U SERIES
OPERATING MANUAL
POWERING TECHNOLOGY
Document Number: DPP1U-MAN Rev. 7 dpp1u-man-Rev7-0422.indd
4.4 When operating this Distribution Panels the chassis ground terminal must be connected to
the system frame ground or other proper safety ground for the protection of personnel.
4.5 All connections to the Distribution Panels should be carefully checked for errors before
applying power to them.
4.6 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.
4.7 To ensure proper branch circuit protection a 200Acircuit breaker must be installed into each
input supply feed.
5.0 WARRANTY (summary)
DPP1U Series power distribution panels are warranted for two (2) years from date of shipment
against 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.
6.0 DESCRIPTION OF OPERATION
6.1 Power Distribution Circuits. A simplied schematic diagram of the distribution panels
is shown in Figure 2. The battery input to each load connects to a high-current copper bus
bar from which the individual fuses or circuit breakers distribute power to the loads. The
return input connects to a similar bus bar to which the individual loads terminate. The A
and B loads are totally independent and isolated with the exception of models incorporating
the ‘S’option.
CIRCUIT
BREAKERS
BATT. BATT.
INPUT
RET.
INPUT
RET.
HI-CURRENT BUS BAR HI-CURRENT BUS BAR
HI-CURRENT BUS BAR HI-CURRENT BUS BAR
LOADS LOADS
1 2 3... N
A SIDE
ALARM
CIRCUITS
B SIDE
ALARM
CIRCUITS
A SIDE B SIDE
-S OPTION
-S OPTION
1 2 3... N
Figure 2. Block Diagram

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DPP1U SERIES
OPERATING MANUAL
POWERING TECHNOLOGY
Document Number: DPP1U-MAN Rev. 7 dpp1u-man-Rev7-0422.indd
6.2 Alarm Circuits. The alarm circuits detect a tripped circuit breaker and, in this event, turn
on the red part of the LEDs. The alarm circuits also each drive Form C relay contacts. If
one or more circuits open or if there is an input power failure, the relays are de-energized
and the contacts are used to control external audible or visual alarms. The A and B alarm
circuits are also independent and isolated from each other.
LED & RELAY STATE MEANINGS
LED State Relay State Meaning
Green Energized (N.O. is closed) OK
Red De-energized
(N.O. is open)
Breaker Trip
or
Breaker OFF
OFF No Input Power
7.0 SPECIFICATIONS
The following specications are typical at 25°C unless otherwise noted.
INPUT/OUTPUT
Input/Output Ratings......................... 150A Max. @ 40°C, each side A & B
125A Max. @ 50°C, each side A & B
50A Max. @ 70°C, each side A & B
See manual for details on CB deratings
Conguration .................................150ASingle Bus with 1 to 16 Breakers
300 A Dual Bus 1 to 8 Breakers
Each Bus
Breaker Capacity 1......................................................................1A to 30A
Voltage 1
24/48V Version..................................................................... 21-60VDC
12V Version....................................................................... 10.5-15VDC
Polarity ............................................................see model table on page 5
ALARMS
Alarm Indicator ................................................... Dual Color LED Per Bus
LED Status Indication........................................................Green = Normal
Red = CB Trip Alarm
O󰀨 = No Power
Alarm Relays..............................................Form C Contacts for each Bus
SAFETY ......................UL60950-1 2nd Ed., CSA22.2 No. 60950-1 2nd Ed.,
EN60950-1 2nd Ed.
ENVIRONMENTAL
Operating Temp. Range .....................................................-10°C to +70°C
Storage Temp. Range........................................................-40°C to + 85°C
Humidity........................................................0% to 95%, Non-Condensing
PHYSICAL SPECIFICATIONS
Case Material .....................................................................................Steel
Finish............................................................................Powder Coat Black
Case Dimensions, Inches (mm) .......................1.74 H x 17.12 W x 8.94 D
(44.2 x 434.9 x 227.1)
Weight ...................................................................... 10.30 lbs. ( 4.67 kg.)
Rack Mounting..................................................................... 19 or 23 Inch
CONNECTIONS
Input Connections......................................Crimp Type Lug or ¼ - 20 Stud
Output Connections.................................Barrier Terminal Strips, No. 6-32
Chassis Ground Connection.................................................No. 8-32 Stud
Alarm Relay Connections................. .Spring Clamp Terminals,16-26AWG
Notes:
1. See ordering guide to specify.
For thermal reasons, it is recommended when operating the panel continuously at the ambient
temperatures dened above, the circuit breaker current shall not exceed the limits as dened below.
40°C Ambient:
150A Max., the CB current should be limited to 18.75A Max.
125A Max., the CB current should be limited to 22.5A Max.
50°C Ambient:
125A Max., the CB current should be limited to 15.6A Max.
100A Max., the CB current should be limited to 21A Max.
70°C Ambient:
50A Max., the CB current should be limited to 15A

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DPP1U SERIES
OPERATING MANUAL
POWERING TECHNOLOGY
Document Number: DPP1U-MAN Rev. 7 dpp1u-man-Rev7-0422.indd
8.0 FRONT PANEL DESCRIPTION
The front panel of the DPP1U, shown in Figure 3 below, consists of the A and B sides and a center
section. The A and B sides can each accommodate up to 8 eld installable/replaceable hydraulic
magnetic circuit breakers rated from 1A to 30A. The center section has two green/red LEDs, one
for theAside (left) and the other for the B side (right). At the bottom of this center section is a slot
for a wallet and designator card. This card permits the recording of each output circuit by number.
ALM B ALM A
BAT BAT
RTN RTN
NO-C-NC NO-C-NC
BAT
RTN
BAT
RTN
1 2 3 4 5 6 7 8
1 2 3 4 5 6 7 8
150A MAX PER BUS 150A MAX PER BUS
A B
ALARM
1 18 8
ON
I
O
OFF
ON
I
O
OFF
ON
I
O
OFF
ON
I
O
OFF
ON
I
O
OFF
ON
I
O
OFF
ON
I
O
OFF
ON
I
O
OFF
ON
I
O
OFF
ON
I
O
OFF
ON
I
O
OFF
ON
I
O
OFF
ON
I
O
OFF
ON
I
O
OFF
ON
I
O
OFF
ON
I
O
OFF
17.12 (434.9)
1.74
(44.2)
Alarm
Contacts
Alarm LEDs
B Input
¼-20 Studs
REAR VIEW
FRONT VIEW
Case depth: 8.94 (227.1)
Ground
8-32 Stud
A Side Breakers B Side Breakers
A Outputs
6-32 Terminal Strip
B Outputs
6-32 Terminal Strip A Input
¼-20 Studs
2.28
(57.8)
Clear Perspex
Safety Cover
ALM B ALM A
BAT BAT
RTN RTN
NO-C-NC NO-C-NC
BAT
RTN
BAT
RTN
1 2 3 4 5 6 7 8
1 2 3 4 5 6 7 8
NEG
POS
NEG
POS
POS
NEG
POS
NEG
NEG
POS
NEG
POS
POS
NEG
POS
NEG
Figure 3. Front Panel View
9.0 BACK PANEL DESCRIPTION
9.1 BackView. Figure 4 shows the back of the DPU1U distribution panel. Inputs are at the left
and right ends of the back panel. Side B outputs are at two rows of barrier terminal strips
on the left side, and sideAoutputs are the same on the right side. At the center of the back
panel are two spring clamp terminal blocks for the Form C relay contact outputs.
Below these is a chassis ground terminal.
ALM B ALM A
BAT BAT
RTN RTN
NO-C-NC NO-C-NC
BAT
RTN
BAT
RTN
1 2 3 4 5 6 7 8
1 2 3 4 5 6 7 8
150A MAX PER BUS 150A MAX PER BUS
A B
ALARM
1 18 8
ON
I
O
OFF
ON
I
O
OFF
ON
I
O
OFF
ON
I
O
OFF
ON
I
O
OFF
ON
I
O
OFF
ON
I
O
OFF
ON
I
O
OFF
ON
I
O
OFF
ON
I
O
OFF
ON
I
O
OFF
ON
I
O
OFF
ON
I
O
OFF
ON
I
O
OFF
ON
I
O
OFF
ON
I
O
OFF
17.12 (434.9)
1.74
(44.2)
Alarm
Contacts
Alarm LEDs
B Input
¼-20 Studs
REAR VIEW
FRONT VIEW
Case depth: 8.94 (227.1)
Ground
8-32 Stud
A Side Breakers B Side Breakers
A Outputs
6-32 Terminal Strip
B Outputs
6-32 Terminal Strip A Input
¼-20 Studs
2.28
(57.8)
Clear Perspex
Safety Cover
ALM B ALM A
BAT BAT
RTN RTN
NO-C-NC NO-C-NC
BAT
RTN
BAT
RTN
1 2 3 4 5 6 7 8
1 2 3 4 5 6 7 8
NEG
POS
NEG
POS
POS
NEG
POS
NEG
NEG
POS
NEG
POS
POS
NEG
POS
NEG
Figure 4. Back Panel View
9.2 Input Connections. See Figure 5. The DC power inputs to the distribution panels are made
by means of crimp type lugs or direct connection to ¼-20 studs to two copper bus bars on
side A and side B. The upper bus bar is the battery connection (whether + or -) and the
lower bus bar is the return (whether + or -).
0.625”
1.48”
0.5”
0.34”
0.375”
0.65”
0.32”
Figure 5. Input Bus Bar Detail
Positive Return
-48V/-24V, -12V
Negative Return
+24V/+48V, +12V

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DPP1U SERIES
OPERATING MANUAL
POWERING TECHNOLOGY
Document Number: DPP1U-MAN Rev. 7 dpp1u-man-Rev7-0422.indd
9.3 Crimp Type Lugs. A list of compatible crimp type lugs is shown in the following table
for AWG wire sizes from no. 1 to 8 and one- or two- hole lugs. These lugs can be ordered
directly from the manufacturer, Panduit Corp., using the model numbers shown in the table.
Astandard kit of four two-hole crimp type lugs for no. 6AWG copper wire is available from
UNIPOWER. Order kit no. 775-1434-0000.
WIRE
AWG .25DIA. HOLES PANDUIT CORP. PART NUMBER UNIPOWER PART NUMBER
81
2LCA8-14-L LCD8-14A-L 625-1665-0010 625-1665-0110
61
2LCA6-14-L LCD6-14A-L 625-1665-0020 625-1665-0120
41
2LCA4-14-L LCD4-14A-L 625-1665-0030 625-1665-0130
21
2LCA2-14-Q LCD2-14A-Q 625-1665-0040 625-1665-0140
11
2LCA1-14-E LCD1-14A-E 625-1665-0050 625-1665-0150
9.4 Output Connections. Output connections forAand B loads are shown in Figure 4. There
are 8 sets of barrier terminal strip connections for each side, A and B. The connections
are numbered to correspond with the numbers of the front panel breakers. The upper strip
connections are from the battery through the breakers; the lower strip connections are the
returns. Side B is on the left and side A on the right, as shown.
Each terminal is a no. 6-32 screw and is rated at 30 amperes. Wire sizes from no. 12 AWG
to no. 22AWG may be used for connections. Figure 6 below shows detailed spacing of the
terminals.
0.625”
1.48”
0.5”
0.34”
0.375”
0.65”
0.32”
Figure 6. Output Barrier Strip Detail
9.5 Form C Relay Contact Outputs. The center of the back panel has connections to the
Form C relay contact outputs for connection to external audible or visual alarm circuits.
See Figure 7 below.
Figure 7. Alarm Contact Detail

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DPP1U SERIES
OPERATING MANUAL
POWERING TECHNOLOGY
Document Number: DPP1U-MAN Rev. 7 dpp1u-man-Rev7-0422.indd
Connection is made via two Phoenix Contact spring clamp terminal blocks. ALM-B is
for the Form C relay contact of side B and ALM-A is for the Form C relay contact of side
A. The terminals, viewed from left to right, are the normally open (NO) common (C) and
normally closed (NC) contacts, respectively. See gure 8 below.
“Normally Closed” and “Normally Open” are dened with the distribution panel powered
and providing power to all outputs, i.e. no circuit breakers tripped.
The ratings of the relay contacts are 0.6A at 125VAC or 2A at 30VDC. The spring clamp
terminals accept wire sizes nos. 16 to 26 AWG.
When the input power is connected to a side (A or B), the Form C relay of that side is
energized. If there is either loss of input power, one or more circuit breakers trip or the relay
is de-energized, the normally open contacts close and the normally closed contacts open.
9.6 Chassis Ground Connection. Just below the Form C relay contact terminals is the chassis
ground terminal. This terminal is a no. 8-32 stud with a nut.
NOTE THAT IT IS ESSENTIAL THAT THIS TERMINAL IS CONNECTED TO THE
SYSTEM FRAME GROUND TO ENSURE SAFE OPERATION.
10.0 UNPACKING AND INSPECTION
10.1 This DPP1U Series power distribution panel was carefully tested, inspected and packaged
for shipment from our factory. The unit and circuit breakers are shipped separately. 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 rectier
system without proper packing.

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DPP1U SERIES
OPERATING MANUAL
POWERING TECHNOLOGY
Document Number: DPP1U-MAN Rev. 7 dpp1u-man-Rev7-0422.indd
11.0 INSTALLATION
11.1 Mounting. This distribution panel can be mounted in either 19- or 23-inch racks by using
the supplied reversible brackets. Mount it from the front of the rack using the correct osets
to align with existing rack-mounted equipment. The bracket osets are every quarter inch
from front to back.
11.2 Connections. Input connections should be made with one- or two-terminal crimp type lugs
using copper wire size from no. 1 to 8 AWG, depending on current and wire loop distance.
See Sections 9.2 and 9.3. Output connections are made to the barrier terminal strips. See
Section 9.4 and Figure 6.
NOTE: Single feed models, -S sux, have both left and right side input bus bars tted. It
is only necessary to connect the input feed to one side for correct operation. The unused
side is directly connected to the live input feed and can be used for supplying additional
panels. See gure 8 below.
CAUTION: The total load must not exceed 150A on any one pair of bus bars in the chain.
ALM B ALM A
BAT BAT
RTN RTN
NO-C-NC NO-C-NC
BAT
RTN
BAT
RTN
1 2 3 4 5 6 7 8
1 2 3 4 5 6 7 8
ALM B ALM A
BAT BAT
RTN RTN
NO-C-NC NO-C-NC
BAT
RTN
BAT
RTN
1 2 3 4 5 6 7 8
1 2 3 4 5 6 7 8
ALM B ALM A
BAT BAT
RTN RTN
NO-C-NC NO-C-NC
BAT
RTN
BAT
RTN
1 2 3 4 5 6 7 8
1 2 3 4 5 6 7 8
150A MAX. FEED
RETURN
Figure 8. Series Connection of Multiple Panels
The Form C relay contact output connections are made to the spring clamp terminal blocks.
See Section 9.5. The chassis ground connection is made to the no. 8-32 stud. See Section
9.6. This safety ground connection should be made before operating the panel.
11.3 Checking Connections.
Carefully check the polarity of input connections to the distribution panel and output
connections to the load before operating the panel. Reverse connections may harm the
distribution panel and may cause serious harm to the load. Check to make sure that the
chassis safety ground connection is made. Make sure that all connections are clean and
secure to minimize contact resistance.
CAUTION:Seesection9.1gure4toconrmconnectionpolarityofthepanelbeing
installed.
11.4 Rear Safety Cover. Once all of the above have been completed, t the clear plastic safety
cover to the back of the unit using the supplied mounting studs and screws. Instruction for
tting the mounting studs the panel are included in the accessory kit.

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DPP1U SERIES
OPERATING MANUAL
POWERING TECHNOLOGY
Document Number: DPP1U-MAN Rev. 7 dpp1u-man-Rev7-0422.indd
12.0 INSTALLING CIRCUIT BREAKERS
The DPP1U Series employs pluggable circuit breakers that can be easily installed, removed or
replaced without the need for an tools. The cover-plate that is xed over the breakers is designed to
be used to extract existing circuit breakers or blanking panels. This operation is carried out without
the need to dismount the unit from it’s installation.
Installation, removal or replacement of a circuit breaker and connection or disconnection of a load
circuit should be carried out only by only by qualied technical persons who are trained in the use
of power systems and are well aware of the hazards involved.
Although it may be necessary on some occasions to carry out this operation while power remains
applied to the panel, it is always preferable to switch o the power if possible before proceeding.
12.1 Removing the cover plate. To remove the cover plate under the two knurled retaining
screws and pull forward. See gure 9 below.
ALM B ALM A
BAT BAT
RTN RTN
NO-C-NC NO-C-NC
BAT
RTN
BAT
RTN
1 2 3 4 5 6 7 8
1 2 3 4 5 6 7 8
150A MAX PER BUS
150A MAX PER BUS
A B
ALARM
1
1
8
8
ON
I
O
OFF
ON
I
O
OFF
ON
I
O
OFF
ON
I
O
OFF
ON
I
O
OFF
ON
I
O
OFF
ON
I
O
OFF
ON
I
O
OFF
ON
I
O
OFF
ON
I
O
OFF
ON
I
O
OFF
ON
I
O
OFF
ON
I
O
OFF
ON
I
O
OFF
ON
I
O
OFF
ON
I
O
OFF
17.12 (434.9)
1.74
(44.2)
Alarm
Contacts
Alarm LEDs
B Input
¼-20 Studs
REAR VIEW
FRONT VIEW
Case depth: 8.94 (227.1)
Ground
8-32 Stud
A Side Breakers B Side Breakers
A Outputs
6-32 Terminal Strip
B Outputs
6-32 Terminal Strip A Input
¼-20 Studs
2.28
(57.8)
Clear Perspex
Safety Cover
ALM B ALM A
BAT BAT
RTN RTN
NO-C-NC NO-C-NC
BAT
RTN
BAT
RTN
1 2 3 4 5 6 7 8
1 2 3 4 5 6 7 8
NEG
POS
NEG
POS
POS
NEG
POS
NEG
NEG
POS
NEG
POS
POS
NEG
POS
NEG
Figure 9. Cover plate removal
12.2 Removing a breaker or blanking panel. To remove a breaker or blanking panel place
the tab at the end of the cover plate under the top edge of the breaker or blanking panel and
lever out carefully. See gure 10 below.
ON
I
O
OFF
ON
I
O
OFF
INSERT EXTRACTION TAB
HERE TO LEVER OUT
Figure 10. Breaker or blank panel removal
12.3 Installing a breakerorblank panel. Carefully push the breaker or blank panel rmly into
the socket and make sure that it is fully seated.
Repeat the above procedure from 12.2 to 12.3 for all positions and then replace the cover
plate.
12.4 Connecting or disconnecting load circuits. In cases where a breaker has been installed
retaining screws
extraction tab

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DPP1U SERIES
OPERATING MANUAL
POWERING TECHNOLOGY
Document Number: DPP1U-MAN Rev. 7 dpp1u-man-Rev7-0422.indd
follow the instructions in section 9.4 to connect the new output wiring. Ensure that the
breaker is in the OFF position until all connections have been made and thoroughly checked.
Note that if power remains applied to the panel during breaker installation the alarm
LEDwill show redandthealarm relaywill be activated until the new cables have been
connected and the breaker set to the ON position.
13.0 SETUP AND TESTING
13.1 It is not necessary to have the distribution panel 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 A side of the distribution
panel. Connect ground to the chassis ground terminal. Set all circuit breakers to on.
CAUTION:Seesection9.1gure4toconrmconnectionpolarityofthepanelbeing
installed.
13.3 Turn on the input power source. The A side LED should be green. If it is red, one of the
circuit breaker is tripped. If the LED is o, there is no input power to the unit. Check the
output voltage at each set of output terminals with a digital voltmeter.
13.4 With the A side LED green, use an ohmmeter to check the Form C relay contact outputs.
On J4 measure the resistance between pins 1 and 2. This should read “open”. Measure the
resistance between pins 2 and 3. This should read “short”.
13.5 On theAside trip circuit breaker no. 1. TheAside LED should turn red. On J4 measure the
resistance between pins 1 and 2. This should read “short”. Measure the resistance between
pins 2 and 3. This should read “open”. Reset the circuit breaker.
13.6 On the A side check each succeeding breaker by tripping it, and verify that the LED turns
red. It is not necessary to recheck the Form C relay contacts.
13.7 Repeat the same tests of Sections 13.2 through 13.6 on the B side of the distribution panel,
use J3 to check the Form-C relay operation.
13.8 The distribution panel may now be connected to its intended application.
13.9 If the distribution panel did not operate properly in the above tests, go back and double
check the connections and the polarity of the input source 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.

Page 14
DPP1U SERIES
OPERATING MANUAL
POWERING TECHNOLOGY
Document Number: DPP1U-MAN Rev. 7 dpp1u-man-Rev7-0422.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.
Product support can be obtained using the following addresses and telephone numbers.
Corporate oce:
UNIPOWER, LLC
210 N University Dr
Coral Springs, FL 33071
United States
Manufacturing facility:
UNIPOWER, LLC
65 Industrial Park Rd
Dunlap, TN 37327
United States
Manufacturing facility:
UNIPOWER Slovakia SRO
ZLATOVSKA 1279
Business Center 22
91105 Trencin, Slovakia
Phone: [phone]
Toll Free: 1-800-440-3504
Web site – www.unipowerco.com
When contacting UNIPOWER, please be prepared to provide:
1. The product model number, spec number, S build number, and serial number
- see the equipment nameplate on the front panel
2. Your company’s name and address
3. Your name and title
4. The reason for the contact
5. If there is a problem with product operation:
• Is the problem intermittent or continuous?
• What revision is the rmware?
• What actions were being performed prior to the appearance of the problem?
• What actions have been taken since the problem occurred?