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DPB1U & DPG1U SERIES
OPERATING MANUAL
P O W E R I N G T E C H N O L O G Y
Manual No. DPB-DPG-4
dpb_dpg-man-rev4-0317.indd
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
or
GMT FUSES
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
N
...3
2
1
A SIDE
ALARM
CIRCUITS
b SIDE
ALARM
CIRCUITS
A SIDE
B SIDE
-S OPTION
-S OPTION
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
Red
Breaker Trip
or
Breaker OFF
or
Fuse Blown
OFF
No Input Power
Table 2. LED State Definitions
