Unipower DPB1U SERIES, DPG1U SERIES Operating Manual

POWERING TECHNOLOGY

OPERATING MANUAL

POWER DISTRIBUTION PANELS

DPB1U & DPG1U SERIES

Manual No. DPB-DPG-4

dpb_dpg-man-rev4-0317.indd

www.unipowerco.com

© 2017 UNIPOWER LLC

All Rights Reserved

UNIPOWER LLC • 3900 Coral Ridge Drive, Coral Springs, Florida 33065, USA • [e-mail]

North America: [phone] • Latin America: [phone] • Europe: [phone]

POWERING TECHNOLOGY

DPB1U & DPG1U SERIES

OPERATING MANUAL

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 ........................................................................................10

10.0 UNP ACKING AND INSPECTION ...................................................................................13

11.0 INSTALLATION ...............................................................................................................14

12.0 SETUP AND TESTING ....................................................................................................16

Manual No. DPB-DPG-4

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POWERING TECHNOLOGY

DPB1U & DPG1U SERIES

OPERATING MANUAL

FIGURES

Figure 1. DPG1U & DPU1U Front Views ....................................................................................4

Figure 2. Block Diagram ...............................................................................................................7

Figure 3. DPB1U Front Panel View ..............................................................................................8

Figure 4. DPG1U Front Panel View ..............................................................................................8

Figure 5. Back Panel View ..........................................................................................................10

Figure 6. Input Bus Bar Detail ....................................................................................................10

Figure 7. Output Barrier Strip Detail ...........................................................................................11

Figure 8. Alarm Contact & Ground Detail ..................................................................................12

Figure 9. Series Connection of Multiple Panels ..........................................................................14

TABLES

Table 1. Basic Congurations ......................................................................................................5

Table 2. LED State Denitions ....................................................................................................7

Table 3. GMT Fuse Values ...........................................................................................................9

Table 4. Input Cable Lug Sizes & Types ...................................................................................11

Table 5. Alarm Relay Contacts ..................................................................................................12

Table 6. Relay State Denitions ................................................................................................12

Manual No. DPB-DPG-4

Page 3

dpb_dpg-man-rev4-0317.indd

POWERING TECHNOLOGY

DPB1U & DPG1U SERIES

OPERATING MANUAL

OPERATING MANUAL

DPB1U & DPG1U SERIES

DC POWER DISTRIBUTION PANELS

1.0 INTRODUCTION

These distribution panels provide protected power distribution to telecommunication equipment.

They oer fuse or circuit breaker positions on the A and B sides of the panel. The A and B loads

of the distribution panel are totally independent and isolated from each other. There is a green/red
LED for each load to indicate normal operation or an open circuit due to a blown fuse or tripped
circuit breaker.

The panels are only 1.75 inches (1 mounting position) high to minimize rack space and can be mounted

in either a 19- or 23-inch relay rack with corresponding brackets. They can be mounted from the

front of the rack with osets every ¼-inch from front to back to align with existing rackmounted

equipment.

Figure 1 shows the two series of panels. The rst is the DPG1U Series which has 10 GMT fused

circuits on both A and B sides. The second is the DPB1U Series with up to 6 circuit breaker circuits
on both A and B sides.

DPG1U: GMT Fuse Distribution Panel

DPB1U: Circuit Breaker Distribution Panel

Figure 1. DPG1U & DPU1U Front Views

The panels can be congured for 12, 24 or 48 volts and are polarity neutral. Because the A and B

sides are independent and isolated, they can be congured separately. For example, the A side can
be 48V and the B side can be 24V. The voltage and of each side must be congured at the factory..

Each bus (A and B) has a green/red visual alarm and one Form C relay alarm contact for connection

to external audible or visual alarms.

Manual No. DPB-DPG-4

Page 4

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POWERING TECHNOLOGY

2.0 FEATURES & OPTIONS

2.1 The following is a summary of the important features of the Series.

 Thin Height: 1.75 inches (1RU)
 19 or 23-Inch Rack Mounting
 Dual A/B Loads
 Current Capacity: 80 to 150A per Load (Depends on Model)

 Operating Voltage: 12, 24 or 48VDC

 POLARITY NEUTRAL
 Red/Green LED Indicators
 1 Form C Relay Contacts per bus
 Protection: GMT Fuses or Magnetic Circuit Breakers
 Independent and Isolated Loads
 Input Connections: Crimp Type Lugs
 Output Connections: Barrier Terminal Strips

2.2 Options. There are two standard options available:

DPB1U & DPG1U SERIES

OPERATING MANUAL

Option S - This option internally links the A bus to the B bus so that a fully congured unit

can be supplied DC from a single feed. The A and B sides must have the same voltage and
polarity. Not available with option F.

Option F (special order only) - Fail safe operation for 24 and 48V units. A and B sides with
separate feeds operate redundantly so that one feed takes over both sides in case of failure of
the other feed. Voltage and polarity of both sides must be the same. Note that this option

requires an extended depth chassis. Not available with option S.

3.0 PRODUCT LINE

The following table shows the basic conguration that are available for each type of panel. ‘x’
denotes the voltage and polarity. Full conguration details are given in section 8.

INPUT

FEEDS

BREAKERS / FUSES

1

2 6 Breakers Each Bus 150 300 DPB1U-Ax-Bx

1

2 10 Fuses Each Bus 80 160 DPG1U-Ax-Bx

MAX. #

6 Breakers 150 150 DPB1U-Ax

12 Breakers 150 150 DPB1U-Ax-Bx-S

10 Fuses 80 80 DPG1U-Ax
20 Fuses 80 80 DPG1U-Ax-Bx-S

AMPS

EACH FEED

TOTAL

AMPS

BASE MODEL

Table 1. Basic Congurations

Manual No. DPB-DPG-4

Page 5

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POWERING TECHNOLOGY

4.0 SAFETY & INDUSTRY STANDARDS

4.1 DPB1U & DPG1U 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 DPB1U & DPG1U Series power distribution panels are CE marked to indicate conformance

to the European Union’s Low Voltage, EMC and RoHS Directives.

4.3 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.

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.

DPB1U & DPG1U SERIES

OPERATING MANUAL

4.5 All connections to the Distribution Panels should be carefully checked for errors before

applying power to them.

4.6 The internal circuits may present an energy hazardous. 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)

DPB1U & DPG1U 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.

Manual No. DPB-DPG-4

Page 6

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POWERING TECHNOLOGY

BATT.

BATT.

INPUT

INPUT

RET.

CIRCUITS

CIRCUITS

A SIDE B SIDE

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.

DPB1U & DPG1U SERIES

OPERATING MANUAL

RET.

HI-CURRENT BUS BAR HI-CURRENT BUS BAR

1 2 3... N N ...3 2 1

LOADS LOADS

HI-CURRENT BUS BAR HI-CURRENT BUS BAR

A SIDE

ALARM

-S OPTION

CIRCUIT

BREAKERS

or

GMT FUSES

-S OPTION

b SIDE

ALARM

Figure 2. Block Diagram

6.2 Alarm Circuits. The alarm circuits detect a tripped circuit breaker or blown 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 STATE MEANINGS

LED State Meaning

Green OK

Breaker Trip

Red

OFF No Input Power

or

Breaker OFF

or

Fuse Blown

Manual No. DPB-DPG-4

Table 2. LED State Denitions

Page 7

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POWERING TECHNOLOGY

17.12 (434.9)

1.74

(44.2)

FRONT VIEW

Case depth: 8.94 (227.1)

17.12 (434.9)

FRONT VIEW

1.74

(44.2)

7.0 SPECIFICATIONS

The following specications are typical at 25°C unless otherwise noted.

DPB1U & DPG1U SERIES

OPERATING MANUAL

INPUT / OUTPUT

Panel Capacity ...........................................See Panel Conguration Table

Conguration

DPB1U

ENVIRONMENTAL

Operating T emp. Range .....................................................-10°C to +70°C

Storage T emp. Range ........................................................-40°C to + 85°C

Humidity........................................................0% to 95%, Non-Condensing

Single Bus ..............................................................1 to 12 Breakers

Dual Bus ..........................................................1 to 6 Breakers Each

DPG1U

Single Bus ...........................................................1 to 20 GMT Fuses

Dual Bus .....................................................1 to 10 GMT Fuses Each

Breaker/Fuse Capacity

2

Voltage

1

.............................................................½A to 50A

48V Nominal ..........................................................................42-60VDC

PHYSICAL SPECIFICATIONS

Case Material ......................................................................................Steel

Finish ............................................................................Powder Coat Black

Dimensions

3

, Inches (mm) ................................1.75 H x 19.00 W x 9.00 D

(44.5 x 483 x 229)

Weight ....................................................................... 10.30 lbs. ( 4.67 kg.)

Rack Mounting Width ....................................................... 19 or 23 Inches

24V Nominal ..........................................................................21-30VDC

12V Nominal .......................................................................10.5-15VDC

Polarity.....................................................................POLARITY NEUTRAL

CONNECTIONS

Input Connections.......................................Crimp Type Lug or ¼ - 20 Stud

Output Connections

ALARMS

Alarm Indicator .....................................................Dual-Color LED Per Bus

LED Status Indication ........................................................Green = Normal

Red = Alarm
O󰀨 = No Power

Alarm Connections .............................One Form C Relay Contact Per Bus

SAFETY STANDARDS ..............................................UL1950, UL60950-1

1-30A ..................................................Barrier Terminal Strips, No. 6-32

40A-50A ............................................Barrier Terminal Strips, No. 10-32

Chassis Ground Connection..................................................No. 8-32 Stud

Fail Alarm Connections...........................................045” sq. Wirewrap Pins

NOTES: 1. See tables for available breaker & fuse sizes.

2. See Ordering Guide to specify voltage.

3. For units with fail safe option the case depth is 10.44 inches (265mm).

CAS22.2 No.950-1, EN60950-1

8.0 FRONT PANEL DESCRIPTION

The front panel of the DPB1U, 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 6 hydraulic magnetic circuit breakers rated
from 1A to 50A.

OFFOON

15

OFFOON

15

OFFOON

1

I

2

I

15

OFFOON

15

I

I

OFFOON

3

4

15

OFFOON

15

I

I

5

6

ALARM

A B

OFFOON

15

OFFOON

15

OFFOON

1

I

2

I

15

OFFOON

15

I

I

OFFOON

3

4

15

OFFOON

15

5

I

6

I

A Side Breakers B Side Breakers

Alarm LEDs

Figure 3. DPB1U Front Panel View

The front panel of the DPG1U, shown in Figure 4 below, consists of the A and B sides and a center

section. The A and B sides can each accommodate up to 10 GMT Fuses rated from ½A to 12A.

ALARM

1 10

A Side Fuses B Side Fuses

A B

Alarm LEDs

Figure 4. DPG1U Front Panel View

In both cases the center section has two green/red LEDs, one for the A side (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.

Manual No. DPB-DPG-4

Page 8

1 10

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POWERING TECHNOLOGY

8.1 DPB1U Conguration Details

Model No.: DPB1U-A -B -C-

DPB1U & DPG1U SERIES

OPERATING MANUAL

CODE VOLTAGE

1 48V
4 24V
6 12V

POLARITY NEUTRAL.

May be connected for Positive or

Negative Ground operation.

Notes: 1. If section B is not used a blank panel is installed at the factory and the “-B” in the

2. The sum of all fuse currents on either side must not exceed 150 Amperes.

3. When the ‘S’ option is specied each side of the panel is limited to 75A.

4. Failsafe (option F) is to special order only and uses a chassis 10.44” depth. Call

model number is not required.

sales to discuss your requirements.

8.2 DPG1U Conguration Details

Model: DPG1U-A-B-C-

CODE VOLTAGE

1 48V
4 24V
6 12V

POLARITY NEUTRAL.

May be connected for Positive or

Negative Ground operation.

Notes: 1. If section B is not used a blank panel is installed at the factory and the “-B” in the model number is not required.

2. The sum of all fuse currents on either side must not exceed 80 Amperes.

3. When the ‘S’ option is specied each side of the panel is limited to 75A.

4. Failsafe (option F) is to special order only and uses a chassis 10.44” depth. Call sales to discuss your requirements.

BREAKERS

CODE AMPS

F 1
G 2.5
H 5

I 10
J 15
K 20
L 25

M 30
N 40
O 50

CODE OPTION

F
S

1. 24 or 48V versions only.

2. Voltage and polarity for A & B sides
must be the same.

Clear Plastic Rear Safety Cover

(supplied as standard)

(supplied as standard)

CODE OPTION

F
S

1. 24 or 48V versions only.

2. Voltage and polarity for A & B
sides must be the same.

Fail Safe

Single Bus 20-way ²

Clear Plastic

Rear Safety Cover

1, 2

Fail Safe

Single Bus 12-way ²

1, 2

UNIPOWER recommends Bussman fuses which can be ordered using the part numbers shown.

Manual No. DPB-DPG-4

GMT FUSES (ORDER SEPARATELY)

AMPS PART NUMBER COLOR AMPS PART NUMBER COLOR

½ 401-1500-0010 Red 3 401-1500-0060 Blue
¾ 401-1500-0020 Brown 5 401-1500-0070 Green

1 401-1500-0030 Gray 10 401-1500-0080 Red/White

1

/

1

2 401-1500-0050 Orange DUMMY 401-1500-0100

401-1500-0040 White 12 401-1500-0090 Green/Yellow

3

Table 3. GMT Fuse Values

Page 9

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POWERING TECHNOLOGY

Alarm LEDs

A B

ALARM

A Side Breakers B Side Breakers

5

6

3

4

1

2

OFFOON

I

15

OFFOON

I

15

OFFOON

I

15

OFFOON

I

15

OFFOON

I

15

OFFOON

I

15

5

6

3

4

1

2

OFFOON

I

15

OFFOON

I

15

OFFOON

I

15

OFFOON

I

15

OFFOON

I

15

OFFOON

I

15

17.12 (434.9)

1.74

(44.2)

REAR VIEW

FRONT VIEW

Case depth: 8.94 (227.1)

2.28

(57.8)

Clear Perspex

Safety Cover

0.34”

0.375”

0.65”

0.32”

9.0 BACK PANEL DESCRIPTION

9.1 Back View. Figure 5 shows the back of the DPB1U and DPG1U 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 side A outputs 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.

BAT

1 2 3 4 5 6 7 8 9 10

RTN

B Input

¼-20 Studs

9.2 Input Connections. See Figure 6. 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 -).

B Outputs

6-32 Terminal Strip

B SIDE

A SIDE

BAT

RTN

NO-C-NC NO-C-NC

Alarm

Contacts

BAT

1 2 3 4 5 6 7 8 9 10

RTN

Ground

8-32 Stud

6-32 Terminal Strip

Figure 5. Back Panel View

DPB1U & DPG1U SERIES

OPERATING MANUAL

BAT

RTN

A Outputs

A Input

¼-20 Studs

0.625”

0.5”

1.48”

Figure 6. Input Bus Bar Detail

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 table 4.

A standard kit of four two-hole crimp type lugs for no. 6 AWG copper wire is available from

UNIPOWER. Order kit no. 775-1434-0000.

Manual No. DPB-DPG-4

Page 10

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POWERING TECHNOLOGY

0.75

0.378

DPB1U & DPG1U SERIES

OPERATING MANUAL

WIRE

AWG

8

6

4

2

1

.25DIA.

HOLES

1
2

1
2

1
2

1
2

1
2

PANDUIT CORP.

PART NUMBER

LCA8-14-L

LCD8-14A-L

LCA6-14-L

LCD6-14A-L

LCA4-14-L

LCD4-14A-L

LCA2-14-Q

LCD2-14A-Q

LCA1-14-E

LCD1-14A-E

UNIPOWER

PART NUMBER

625-1665-0010

625-1665-0110

625-1665-0020
625-1665-0120

625-1665-0030
625-1665-0130

625-1665-0040
625-1665-0140

625-1665-0050
625-1665-0150

Table 4. Input Cable Lug Sizes & Types

9.4 Output Connections. Output connections for A and B loads are shown in Figure 5. There

are 10 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. 10 AWG

up to no. 22 AWG may be used for connections. Figure 7 below shows detailed spacing of
the terminals.

When DPB1U is tted with either 40A or 50A breakers the additional load rating is

accomodated by tting adaptors that bridge two barrier strip terminals and provide a single

#10-32 screw. Minimum wire size for these connections is 8 AWG.

A maximum of two high current breakers is allowed on each bus.

(19.1)

0.5

(12.7)

1 2 3 4 5

40-50A
LOADS

#10-32

Figure 7. Output Barrier Strip Detail

6 7 8 9 10

1A to 30A

(9.60)

LOADS

#6-32

Manual No. DPB-DPG-4

Page 11

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POWERING TECHNOLOGY

A B

ALARM

A Outputs

6-32 Terminal Strip

A Input

¼-20 Studs

BAT

RTN

1 2 3 4 5 6 7 8 9 10

5

6

5

6

3

4

1

2

OFFOON

I

15

OFFOON

I

15

OFFOON

I

15

OFFOON

I

15

OFFOON

I

15

OFFOON

I

15

17.12 (434.9)

1.74

(44.2)

REAR VIEW

FRONT VIEW

Case depth: 8.94 (227.1)

2.28

(57.8)

Clear Perspex

Safety Cover

RELAY

C

OUTPUTS

N.C.

C

N.O.

DPB1U & DPG1U SERIES

OPERATING MANUAL

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 8.

B SIDE

A SIDE

BAT

NO-C-NC NO-C-NC

RTN

Ground

Alarm

8-32 Stud

Contacts

Figure 8. Alarm Contact & Ground Detail

Connection is made via two Phoenix Contact spring clamp terminal blocks. “B SIDE” is

for the Form C relay contact of side B and “A SIDE” 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 table 5 below.

PIN FUNCTION CONTACT SCHEMATIC

NC N.C. (normally closed)

C C (common)

NO N.O. (normally open)

ONTACTS

Table 5. Alarm Relay Contacts

“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 AND 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. See table 6.

RELAY STATE MEANINGS

Relay State Meaning

Energized (N.C. is closed) OK

De-energized

(N.C. is open)

Breaker Trip

Breaker OFF

Fuse Blown

No Input Power

or
or

Manual No. DPB-DPG-4

Table 6. Relay State Denitions

Page 12

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POWERING TECHNOLOGY

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.

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 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.

DPB1U & DPG1U SERIES

OPERATING MANUAL

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.

Manual No. DPB-DPG-4

Page 13

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POWERING TECHNOLOGY

80A/150A MAX. FEED

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 Power 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 7.

11.2.1 Single feed models with option S - Although these models 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. As the unused side is directly connected to the live input

feed it can be used for supplying additional panels in series. See gure 9 below.

DPB1U & DPG1U SERIES

OPERATING MANUAL

ALM B ALM A

BAT

SIDE A

SIDE B

RTN

BAT

SIDE A

SIDE B

RTN

BAT

SIDE A

SIDE B

RTN

NO-C-NC NO-C-NC

ALM B ALM A

NO-C-NC NO-C-NC

ALM B ALM A

NO-C-NC NO-C-NC

BAT

1 2 3 4 5 6 7 8 9 10

RTN

BAT

1 2 3 4 5 6 7 8 9 10

RTN

BAT

1 2 3 4 5 6 7 8 9 10

RTN

BAT

RTN

BAT

RTN

BAT

RTN

RETURN

BAT

1 2 3 4 5 6 7 8 9 10

RTN

BAT

1 2 3 4 5 6 7 8 9 10

RTN

BAT

1 2 3 4 5 6 7 8 9 10

RTN

Figure 9. Series Connection of Multiple Panels

When deploying panels with option S, either individually or in a chain, the following

must be adhered to so as to meet with UL safety requirements:

a) The maximum load drawn through the breaker/fuse outputs either side of the

panel may not exceed 75A.

b) The current drawn from one panel in the chain to the next is limited to 75A less

the total amount being drawn through the breaker/fuse outputs on all previous
panels in the chain.

CAUTION: BOTH PAIRS OF INPUT BUS BARS ARE CONNECTED INTERNALL Y

AND MA Y PRESENT AN ENERGY HAZARD. THE SAFETY COVER MUST BE
FITTED WHEN INST ALLATION HAS BEEN COMPLETED TO MINIMIZE RISK.

11.3 Alarm Connections. 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.

Manual No. DPB-DPG-4

Page 14

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POWERING TECHNOLOGY

DPB1U & DPG1U SERIES

OPERATING MANUAL

11.4 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
will not harm the distribution panel as it is POLARITY NEUTRAL. However it 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.

11.5 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.

Manual No. DPB-DPG-4

Page 15

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POWERING TECHNOLOGY

12.0 SETUP AND TESTING

12.1 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.

12.2 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. Insert all fuses into fuse holders or
set all circuit breakers to on.

12.3 Turn on the input power source. The A side LED should be green. If it is red, one of the

fuses is blown or a 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.

12.4 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”.

DPB1U & DPG1U SERIES

OPERATING MANUAL

12.5 On the A side insert a blown fuse into fuse no. 1 position or trip circuit breaker no. 1. The

A side LED should turn red. On the upper row (side A) of wire wrap terminals, measure
the resistance between pins 1 and 2 and between pins 4 and 5. Both should read “open”.

Measure the resistance between pins 2 and 3 and between pins 5 and 6. Both should read

“short”. Replace the blown fuse with a good one or reset the circuit breaker.

12.6 On the A side check each succeeding fuse by replacing it with a blown fuse, or breaker by

tripping it, and verify that the LED turns red. It is not necessary to recheck the Form C

relay contacts.

12.7 Repeat the same tests of Sections 12.2 through 12.6 on the B side of the distribution panel.

Refer to table 5.

12.8 The distribution panel may now be connected to its intended application.

12.9 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 and that opening the unit 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]

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.

Manual No. DPB-DPG-4

Page 16

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