ADC PowerWorx Power Distribution Products - Manual (Page 11)

ADCP-80-545 • Issue 3 • March 2006
Page 5
© 2006, ADC Telecommunications, Inc.
to the panel, the rack, or a location close to the panel. The cards insert into the card holder.
Two types of cards are provided.
1.6 Mounting
The Select Series circuit breaker panel can be mounted in either a 19- or 23-inch (482.6 or
584.2 mm) equipment rack. Two sets of mounting brackets, one set for 19-inch racks and one
set for 23-inch racks, are provided with the panel. The panel can be flush mounted or recessed 1,
2, 3, or 4 inches (25.4, 50.8, 76.2 or 91.6 mm). The mounting brackets are slotted to allow the
panel to be mounted in racks with WECO 1.0-inch (25.4 mm) or EIA 1.25-inch (31.8 mm) hole
spacing. The slots also compensate for vertical rack differences so that the panel can be
mounted in either 1.75- or 2-inch (44.5 or 50.8 mm) rack spaces. The panel requires one open
rack space above and below the chassis for heat dissipation.
1.7 Power Buses
The Select Series circuit breaker panel has two isolated power bus (power feed) circuits which
are designated as the A and B power buses. Each power bus circuit distributes the input power
to the corresponding A or B output power circuit. In each bus circuit, current flows from the
input power terminals, through the circuit breakers, to the output power terminals.
The maximum current capacity of each power bus circuit is 100 Amps. The total output current
capacity of the circuit breakers on each bus must not exceed 100 Amps. The maximum current
rating is marked on the circuit breaker panel rear side. The power dissipation of the panel is 160
watts maximum per panel (80 watts per bus).
1.8 Circuit Breakers
The circuit breakers are magnetic actuation, manual reset, replaceable, 60 Vdc rated circuit
breakers, with finger guard and ampere markings. Both 1- pole and 2-pole breakers are used
with the panel. The 1-pole breakers are available with 1, 3, 5, 10, 15, and 20 Amp ratings. The
2-pole breakers are available with 26, 30, 36, 40, and 50 Amp ratings. Each 1-pole or 2-pole
circuit breaker can be field-replaced by another 1-pole or 2-pole breaker with a different current
rating or time delay. A breaker with a higher current rating may be installed as a replacement as
long as the total current draw of the affected bus does not exceed 100 Amps.
The circuit breaker panel will accommodate from one to eight 1-pole circuit breakers per bus or
from one to four 2-pole circuit breakers per bus. Both 1-pole and 2-pole breakers may be
combined together on the same bus. Each circuit breaker position that does not have a breaker
installed will be filled with a black plastic plate. Any circuit breaker mounting positions that are
left blank when the panel is ordered cannot be fitted with field-installed circuit breakers.
Warning: Use of one bus only on a dual bus panel will result in false alarms for the unused
bus. Power is required on both buses on a dual bus panel for normal operation.