Page 6
DPP1U SERIES
OPERATING MANUAL
P O W E R I N G T E C H N O L O G Y
Document Number: DPP1U-MAN Rev. 6
dpp1u-man-Rev6-0719.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.
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 Office.
6.0
DESCRIPTION OF OPERATION
6.1
Power Distribution Circuits.
A simplified 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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