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C&D TECHNOLOGIES' 450W
48V/7.5 MODULAR SWITCHED-MODE RECTIFIER
is the latest member of the switched-mode rectifier
family designed for use in modular power plants.
The 48V/7.5A modular switched-mode rectifier will
function in parallel with any C&D Technologies
or non-C&D Technologies rectifier with similar
current sharing capacities. This latest addition
to the C&D Technologies line of modular rectifiers
for telecommunications applications combines advanced
technology and the same high quality found in
all C&D Technologies products to create a compact,
versatile and efficient unit. Its small size is
ideally suited for economical growth and use in
customer premises, fiber optic, microwave and
outside plant applications where space is at a
premium.
- Switched-Mode
- Active power factor correction,
>.99PF
- Shelf-mounted
- Automatic load sharing
- Nominal output voltage 48
VDC
- High efficiency (85%)
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Product
Features
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Compact size:
48 volts at 7.5 amperes in 2 rack spaces
for 3 units, making our rectifiers ideal
for confined areas. Up to 8 units will
fit in a single 3 rack space shelf,
mountable in a 23" rack.
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Low cost growth:
The compact unit size allows for system
expansion at a minimum cost. Units may
be paralleled for redundancy or increased
capacity.
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Hot-swappable
modules: The light weight modules
are shelf-mounted and can be easily
installed or removed while the system
is operational without harm or power
interruption.
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Low energy
costs: Active power factor correction
of >.99 and high efficiency of 85% means
less AC power consumption and less heat
dissipation, saving dollars in operating
costs. This also means less disturbance
placed back on the AC line.
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Automatic load
sharing: Forced load sharing
offers equal power distribution from
no load to full load between modules
in parallel applications.
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High-voltage
shutdown (HVSD): The rectifier
has a built-in, High-Voltage Shutdown
Signal permanently set at 60V. No single
component failure (short or open) will
result in an output voltage greater
than 60 volts. If an internal shutdown
occurs, the rectifier may be locally
restarted via a switch or restarted
via a remote HVSD Restart signal.
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Safety compliance:
Designed for all applicable international
safety requirements, including EMI filtering
to FCC Class A limits. Rectifiers and
shelves comply with U.L.1950.
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Panel indicator
LED: Module front-panel indicators
include: Green Normal Operation (diagnostic
code when flashing); Float-equalize
Status, Red Rectifier Failure Alarm.
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Surge protection:
Rectifiers will withstand lightning
or input surges of 6000V/3000A per ANSI/IEEE
C62.41-1991 standards. Surge protection
assures performance under adverse conditions.
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Rectifier Specifications
450W 48V/7.5A Modular Switched-Mode Rectifier
Input
| Voltage |
106-264 VAC, single-phase, no taps required |
| Current |
4.6/2.55/2.12 amps AC nominal |
| Frequency |
45 to 65 Hz |
| Protection |
Rectifier AC source is protected by a fuse
within the rectifier |
| Connections |
AC input connections are made inside the
shelf |
Output
| Voltage |
Float voltage is adjustable from 48 to 56
volts DC. Equalize voltage is adjustable from
48 to 60 volts DC. |
| Protection |
Diode |
| Regulation |
±0.5% from 0 to 100 percent load,
within the specified input voltage and frequency
range |
| Filtering |
Voice Band: less than 32 dBrnc
Wide band noise: less than 250 mV, peak-to-peak,
over a 10 Hz to 14 MHZ range |
| Over Voltage Shutdown |
Fixed at 60VDC |
| Turn-On |
Soft start |
| Load Current |
Modules share within ±10% from 10
to 100 percent rating |
| Connections |
DC output connections are made in the shelf
and are front accessible |
Environment
| Temperature |
-40 to 149° F (-40
to +65°C) |
| Storage Temperature |
-58 to 185° F (-50
to 85°C) |
| Humidity |
0 to 95 percent non-condensing |
| Rectifier Heat Dissipation |
244 Btu/hr@54V |
| Power Factor |
>.99 |
| Efficiency |
>85% |
| EMI |
FCC Part 15, Subpart J for class A equipment
VDE-0875, Class N |
| Audible Noise |
Less than 55 dBa, five feet from any vertical
surface |
| Altitude |
0 to 7000 feet (0
to 2133 m) |
| Module Weight |
2 lbs. |
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