Page 8
DPU1U SERIES
INSTALLATION & OPERATING MANUAL
P O W E R I N G T E C H N O L O G Y
Document Number: DPU1U-MAN Rev. 4
dpu1u-man-rev1-0719.indd
6.3
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
Red
Breaker Trip
or
Breaker OFF
or
Fuse Blown
OFF
No Input Power
Table 1. LED State Definitions
7.0 SPECIFICATIONS
The following specifications are typical at 25°C unless otherwise noted.
INPUT / OUTPUT
Fuse & Breaker Capacity ..................................................................... 80A or 150A Per Bus
LVD Capacity ........................................................................................................................................ 70A
Fuse Configuration ..................................................................................................10 GMT Fuses
Breaker Configurations ......................................................................................1 to 6 Breakers
Voltage
48V Nominal ...................................................................................................................42-60VDC
24V Nominal .....................................................................................................................21-30VDC
12V Nominal....................................................................................................................10.5-15VDC
Polarity ...........................................................................................Positive or Negative Ground
ALARMS
Alarm Indicator ................................................................................................LED on Each Side
LED Status
Fuse & Breaker Sections ..........................................................................Green = Normal
Red = Alarm, Off = No Power
LVD Section .............................Red = LVD Contactor or Battery Breaker Open
Off = Normal
Alarm Connections
Fuse & Breaker ...............................................Two Form C Relay Contacts Per Bus
LVD ......................Form C Relay Contacts for Disconnect or Battery Breaker
SAFETY STANDARDS
.........................................UL1950, CSA22.2 No.950, EN60-950
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 Gray
Dimensions, Inches (mm) ........................................................1.75 H x 19.00 W x 9.00 D
(44.5 x 483 x 229)
Weight ..........................................................................................8.76 - 9.73 lbs. (3.97 - 4.41 kg.)
Rack Mounting Width ........................................................................................ 19 or 23 Inches
CONNECTIONS
Input Connections.................................................... Crimp Type Lugs or ¼ - 20 Studs
Output Connections
Fuse or Breaker ..............................................................................Barrier Terminal Strips
LVD ................................................................................. Crimp Type Lugs or ¼ - 20 Studs
Battery Connection, LVD ..................................... Crimp Type Lugs or ¼ - 20 Studs
Chassis Ground Connection ............................................................................ No. 8-32 Stud
Alarm Connections ..................................................................... 0.045” sq. Wirewrap Pins
BASE
MODEL
SIDE
TOTAL
AMPS
TYPE
DPU1U
A
80
150
10 x GMT Fuses
1-6 x Breakers
B
80
150
70
10 x GMT Fuses
1-6 x Breakers
1 x LVD
Note:
Each side of the panel can be configured for only
one of the available ‘types’ as shown. To specify a
complete model number see the configuration
guide later in this manual.
Table 2. Available Combinations
